Jim Warner [Mon, 19 Oct 2020 05:00:00 +0000 (00:00 -0500)]
library: a tweak to the UNREF_RPTHASH code, <pids> api
If a hash results report is output (via UNREF_RPTHASH)
a portion is devoted to occupied table entries ordered
by depth. There is a possibility that some depths will
not be found among existing occupied table entries and
to avoid any confusion probably should not be printed.
[ to illustrate the potential for confusion prior to ]
[ this patch, force a very small table size (like 8) ]
[ & then trigger the procps_pids_unref() eoj report. ]
So this patch ensures only 'in use' entries are shown.
[ admittedly, all of the remaining logic in the loop ]
[ could/should be subordinate to this new 'if' test, ]
[ but we will keep the change to a minimum. besides, ]
[ there's no harm subtracting/adding a zero numdepth ]
[ especially since the chance of a zero is very low. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Craig Small [Mon, 19 Oct 2020 11:36:06 +0000 (22:36 +1100)]
free,slabtop,uptime: complain about extra ops
free, slabtop and uptime would happily take extra command line
arguments and doing nothing about them. The programs now check
optind after option processing and will give you usage screen
if there is anything extra.
Craig Small [Mon, 19 Oct 2020 11:03:44 +0000 (22:03 +1100)]
watch: Add no linewrap option
For long lines from a process, watch would wrap them around to the
next. While this default option has it uses, sometimes you want to
just cut those long lines down.
watch has a -w flag which will truncate the lines to the number
of columns. A few simple lines to do this new trick.
I think I caught all the ANSI state correctly but there might be
a chance it bleeds to the next row.
Craig Small [Mon, 19 Oct 2020 09:05:41 +0000 (20:05 +1100)]
build-sys: Build check programs only on make check
noinst_PROGRAMS are built with "make" even though we had the
test programs in there and only needed them for "make check".
In theory the check target should depend on check_PROGRAMS as
check-am target does and the document states it should, but for
reasons understood by the automake whisperers only, it doesn't
build them.
check only depends on BUILT_SOURCES for some reason.
Craig Small [Mon, 19 Oct 2020 08:25:33 +0000 (19:25 +1100)]
build-sys: Add check-lib target
The referenced commits created the library infrastructure and test
program to validate that the structures and macros line up with
each other.
The library needs to be (re)built with -DITEMTABLE_DEBUG and then
the test program ran. We clean before and after so we are not
testing a non-debug library or having a debug library hanging around
to cause future problems.
Due to test_Itemtables depending on the library, we don't need to
explicitly build the library.
To validate the library structure/header corrospondence run:
make check-lib
Jim Warner [Thu, 1 Oct 2020 05:00:00 +0000 (00:00 -0500)]
library: tweak that history hash algorithm, <pids> api
This patch just raises the size of the hash table used
to calculate elapsed task stuff. The net result should
be less need for 'chaining' under pid hash collisions.
[ the hash scheme is intentionally kept as primitive ]
[ and, therefore, as fast as possible. it employs an ]
[ 'and' approach versus a 'mod' operation since both ]
[ yield similar distribution but the former approach ]
[ was 4 fewer cpu instructions in terms of overhead. ]
[ additionally, for hash collisions, 'chaining' uses ]
[ an array index rather than the usual pointer since ]
[ the HST_t guys may move when they are reallocated. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Wed, 30 Sep 2020 05:00:00 +0000 (00:00 -0500)]
library: tweak the memory allocation logic, <pids> api
This patch separates the memory allocations into those
used initially from those used in later reallocations.
Thus, we can reduce that iterative realloc() overhead.
Additionally, we'll correct a long standing oops where
multiple history_info structures were created at 'new'
time when only one should have been allocated (jeeze).
[ originally the allocation was strangely based upon ]
[ number of 'items' (???) & later a #define constant ]
Craig Small [Thu, 24 Sep 2020 12:19:11 +0000 (22:19 +1000)]
ps: Match on truncated 16 char for -C
The referenced commit the comm length was increased from 16 to 64
characters to handle the larger command names for things like kernel
threads.
However most user processes are limited to 15 characters which means
if you try something like ps -C myprogramisbiggerthansixteen this would
fail to match because /proc/<PID>/comm would only be myprogramisbigg
ps now checks the comm length and if it is 15 and if the given match
is 15 or more, it will only match the first 15 characters.
This is also how killall has worked for about a year.
Thanks to Jean Delvare <jdelvare@suse.de> for the note.
Jim Warner [Sun, 13 Sep 2020 05:00:00 +0000 (00:00 -0500)]
top: fix additional SEGVs if no tasks were displayable
This patch is an outgrowth of that commit shown below.
Many additional potential segmentation faults might be
encountered if interactive commands are opened up to a
user when a '-p' switch has a single non-existent pid.
[ always the 'k', 'L', 'r', 'Y' keys & maybe 'v' too ]
So, this patch will restrict such a loser (oops, user)
to a reduced subset of normal commands until he/she/it
quits then restarts top with something to be displayed
or issues the '=' command overriding that '-p' switch.
Craig Small [Sun, 13 Sep 2020 00:25:19 +0000 (10:25 +1000)]
vmstat: Null the diskstats pointer
I'm not sure why, but the make check will now fail for vmstat
Running ./vmstat.test/vmstat.exp ...
FAIL: vmstat disk information (-d option)
With the _new function returning the error.
In vmstat all other structures are set to NULL before calling _new
except the diskstat ones. This has been corrected.
Jim Warner [Wed, 9 Sep 2020 05:00:00 +0000 (00:00 -0500)]
top: fix potential SEGV when no tasks were displayable
This patch fixes a nearly decade old bug discovered by
Frederik Deweerdt. His merge request shown below would
be an adequate solution except for iterative overhead.
This alternate patch will represent substantially less
overhead for an admittedly extremely rare possibility.
Jim Warner [Tue, 8 Sep 2020 05:00:00 +0000 (00:00 -0500)]
top: update user/system cpu % graph content (man page)
What had been stated as the contents of the cpu graphs
was never really inclusive enough. Those recent newlib
tweaks highlighted the need for these man doc changes.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Tue, 8 Sep 2020 05:00:00 +0000 (00:00 -0500)]
library: tweak those system cpu statistics, <stat> api
This patch may be a little misleading in terms of size
since most of the changes just reorder a little logic.
The most significant changes involve two GUEST values.
My original implementation excluded such tics from the
TOTAL calculation and, therefore, the BUSY figure too.
That decision was erroneously based on some code found
in ./kernel/sched/cputime.c which in hindsight applies
only to processes, not those system level cpu figures.
[ another likely oops classified STOLEN tics as IDLE ]
So, this patch attempts to bring those SUM values into
better agreement with the calculations performed for a
root cgroup (see ./kernel/cgroup/rstat.c source file).
[ we differ from those above in that we also include ]
[ the IDLE plus IOWAIT tics in our TOTAL calculation ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Sat, 22 Aug 2020 05:00:00 +0000 (00:00 -0500)]
library: eliminate one potential source of human error
There's a huge toe-stubber awaiting future maintenance
as reflected in that commit below which deals with the
addition of new enumerators to the Item_table. Namely,
whenever the table is grown, one must remember to also
change that existing 'logical_end' enumerator's value.
Well, not anymore! Since that MAXTABLE macro was added
to the procps-private.h header we can now also exploit
it so a 'logical_end' automatically tracks table size.
This change also renders some code associated with the
ITEMTABLE_DEBUG #define unnecessary. So it's gone too.
Jim Warner [Wed, 19 Aug 2020 05:00:00 +0000 (00:00 -0500)]
library: fix a flaw in one 'new' function, <diskstats>
At 'new' time, the major API modules each ensure their
'info' parameter isn't NULL but what it pointed to was
except this single straggler, for some unknown reason.
So, this patch brings him into line with those others.
[ And, without going into the ugly details, this was ]
[ the reason I never experienced an abend originally ]
[ but Craig did. And, though related to stacks mgmt, ]
[ zero initialization was not a factor. Anyway, with ]
[ this patch, everybody would have experienced abend ]
[ under the original (faulty) test_Itemtables logic! ]
Jim Warner [Mon, 17 Aug 2020 17:12:12 +0000 (12:12 -0500)]
build-sys: proper fix for the 'test_Itemtables' module
Me thinks Craig had the right idea but perhaps not the
most correct solution. As currently structured, all of
the tests now go way too far by checking every 'unref'
and 'new' call when what we're trying for is survival.
In the final analysis, it doesn't matter who issues an
EXIT_FAILURE - that run_tests guy or an early Exit out
of a procps_new() function. They both will produce the
same end result of the desired "FAIL" test diagnostic.
[ and this patch once again allows the slabinfo test ]
Craig Small [Mon, 17 Aug 2020 12:47:39 +0000 (22:47 +1000)]
build-sys: Check return values and NULL ctx
The referenced commit introduced a test program for the API
but it would often fail due to:
The given pointer for _new() not being NULL
The return value for _new not checked, so the subsequent _unref()
would free() random memory
slabinfo checks failing due to permission denied errors.
The first two are fixed, as well as returning a fail to the test
if they don't return correctly, with slabinfo waiting to see if there
is a way of initialising the structure without reading the slabinfo.
Jim Warner [Sat, 15 Aug 2020 17:12:12 +0000 (12:12 -0500)]
build-sys: added a 'test_Itemtables' to testing scheme
This change sets the stage for exploiting the recently
added ITEMTABLE_DEBUG #define. All tests are performed
in a single module (after trying 6 separate programs).
The chances of each test detecting errors is extremely
remote (at least while I'm maintaining these modules).
However, this single program approach has one flaw and
it relates to the response whenever an error is found.
Each of those six new API modules calls Exit() if they
detect an error. Otherwise, incorrect results would be
produced at the least or an abend encountered at most.
This means that multiple 'make check' invocations will
be needed if more than 1 module actually was in error.
All in all, it is a small price for a large assurance.
Jim Warner [Sat, 15 Aug 2020 16:11:11 +0000 (11:11 -0500)]
build-sys: fix some important 'tests.h' related issues
Exploiting a header file shouldn't also force users to
code their own '#include <stdio.h>'. More importantly,
unless this header is mentioned in dist_noinst_HEADERS
we'd fail 'make distcheck' with the error shown below.
[ the same error will apply to all 'noinst_PROGRAMS' ]
[ that happen to use this header. but please, do not ]
[ ask me to explain exactly why or how my fix works! ]
Reference(s):
../../proc/test_pids.c:24:10: fatal error: tests.h: No such file or directory
24 | #include "tests.h"
| ^~~~~~~~~
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Sat, 15 Aug 2020 15:10:10 +0000 (10:10 -0500)]
build-sys: tweak make & activate some overlooked tests
This commit is just preparing for adding an Itemtables
verification test by reorganizing stuff and activating
a few previously inactive (overlooked?) test programs.
Signed-off-by: Jim Warner <james.warner@comcast.net>
The recent work on updating the <meminfo> and <vmstat>
modules with some newly added linux fields reminded me
(again) of a need for some mechanism guaranteeing that
a header file agrees with the source file assumptions.
Sadly, in the past, if a table entry was omitted or if
the table and header are ordered differently, then the
library would silently return the wrong results values
or even potentially experience a SIGSEGV abnormal end.
This patch offers a much needed development assist for
ensuring that Item_table entries are synchronized with
header file enumerators in terms of number plus order.
It's intended solely for our use as libprocps evolves.
Now, by activating ITEMTABLE_DEBUG, either directly or
via ./configure CFLAGS='-DITEMTABLE_DEBUG', the number
and order will be verified. It is envisioned that this
feature will be used at least once prior to a release.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Mon, 10 Aug 2020 05:00:00 +0000 (00:00 -0500)]
library: added MAXTABLE macro to proc/procps-private.h
This macro should help the following patch be a little
less prolix. Besides, this private header could/should
do just a little more to help with our newlib efforts.
Signed-off-by: Jim Warner <james.warner@comcast.net>
This cosmetic change just prepares for the later patch
introducing validation of Item_tables and enumerators.
[ and, we'll now have better 'set' function names of ]
[ 'set_diskstats_ENUM' instead of the more redundant ]
[ current 'set_diskstats_DISKSTATS_ENUM' convention. ]
[ now our only exception is the <slabinfo> api where ]
[ a full enumerator identifier with 'SLAB' & 'SLABS' ]
[ prefixes are used, and 'SLABINFO_noop/extra' guys. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Sat, 25 Jul 2020 05:00:00 +0000 (00:00 -0500)]
library: ensure 'XTRA_PROCPS_DEBUG' works in real life
This commit attempts to smooth some wrinkles impacting
any future libprocps user exploitation. The 2 problems
relate exclusively to our XTRA_PROCPS_DEBUG provision.
1. The 'xtra-procps-debug.h' header had an include for
'procps-private.h', which was not an installed header.
So the STRINGIFY macros will now be embedded directly.
2. Each of the new api headers referenced '<proc/...>'
rather than '<procps/...>' for the debugging #include.
So, we must drop that prefix in favor of a quoted file
name so that debugging builds work regardless of where
that 'xtra-procps-debug.h' header happens to be found.
Jim Warner [Fri, 24 Jul 2020 15:24:57 +0000 (10:24 -0500)]
library: added some justification emphasis, <pids> api
I almost feel like I should apologize for this kind of
patch ( *almost* ). But, since this comment was unique
to the <pids> api and since it was especially designed
to align with the following comment and since the next
comment already carried the alignment emphasis, I will
refrain from issuing any apology and submit it anyway.
[ plus to prove that i am not totally anal-retentive ]
[ and can exercise some restraint there are two more ]
[ places where i COULD have added alignment emphasis ]
[ see lines 804-806 and lines 1360-1361 for my proof ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Thu, 23 Jul 2020 05:00:00 +0000 (00:00 -0500)]
top: for consistency, reposition a few man page macros
This patch just repositions some .PP macros so they'll
immediately precede the paragraphs to which they apply
rather than a comment line used as a visual separator.
[ ok we also update the document date to 'July 2020' ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Mon, 13 Jul 2020 05:00:00 +0000 (00:00 -0500)]
library: show allowable range in relative enum warning
This patch just trades the 'typestr' for the much more
meaningful 'valid range' when a relative enum has been
deemed invalid under that XTRA_PROCPS_DEBUG provision.
[ and we'll also make one comment a bit more generic ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Fri, 10 Jul 2020 05:00:00 +0000 (00:00 -0500)]
top: address several 'mandoc -Tlint' errors & warnings
This commit addresses the errors/warnings shown below.
Reference(s):
ERROR: skipping end of block that is not open: RE
WARNING: skipping paragraph macro: sp after PP
WARNING: skipping paragraph macro: PP empty
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Thu, 9 Jul 2020 05:00:00 +0000 (00:00 -0500)]
top: make that 'cpu_prt' function a tad more efficient
This commit only eliminates two 'nop' instructions and
one 'jmp' instruction. However, it makes that C source
code look a little bit prettier than it looked before.
[ and yes, some unnecessary parenthesis were used to ]
[ force an alignment of some related lines. it costs ]
[ us nothing in extra code yet helps in readability. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Wed, 1 Jul 2020 05:00:00 +0000 (00:00 -0500)]
build-sys: correct those installed development headers
These headers were used only in the library itself and
it's wrong to have them in the user include directory.
* devname.h .. is used only by: ... pids.c, readproc.c
* numa.h ..... is used only by: ....... pids.c, stat.c
* pwcache.h .. is used only by: ........... readproc.c
* readproc.h . is used only by: ..... escape.c, pids.c
* wchan.h .... is used only by: ............... pids.c
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Tue, 30 Jun 2020 05:00:00 +0000 (00:00 -0500)]
library: make that 'escape_str' private to our library
In that commit referenced below, a promise was made to
revisit an 'escape_str' function in efforts to make it
private to the library. The problem was it's needed by
both ps plus the library which is why it was exported.
So, in an effort to remove it from libprocps.sym, this
patch duplicates all the required code in ps/output.c.
Now, each version can be made private to their caller.
[ along the way we'll use this opportunity to remove ]
[ the 'restrict' qualifiers from function parameters ]
[ while swatting a compiler warning referenced below ]
Jim Warner [Tue, 30 Jun 2020 05:00:00 +0000 (00:00 -0500)]
library: eliminated the questionable 'procps.h' header
There was a time when that procps.h file served a more
traditional role. Prior to the commit referenced below
it held just macros plus manifest constants. But, with
that change, such items were replaced with a series of
includes embracing all the library exported functions.
That approach was known to disguise errors which would
have otherwise yielded a compiler warning. And without
such a warning, there was no way to address the error.
So this patch will trade the all inclusive header file
approach for individual includes only where necessary.
Jim Warner [Sun, 28 Jun 2020 05:00:00 +0000 (00:00 -0500)]
misc: eliminate a couple of miscellaneous gcc warnings
This commit just address the two warnings shown below.
Reference(s):
pgrep.c: In function `select_procs':
pgrep.c:535:12: warning: variable `now' set but not used [-Wunused-but-set-variable]
535 | time_t now;
| ^~~
pidof.c: In function `select_procs':
pidof.c:201:9: warning: `stat_cmd' may be used uninitialized in this function [-Wmaybe-uninitialized]
201 | !strcmp(program, stat_cmd) ||
| ^~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jan Rybar [Thu, 30 Apr 2020 15:06:18 +0000 (17:06 +0200)]
vmstat and watch manpage slight fixes
vmstat - align wording with proc manpage to clarify ambiguities (rhbz#1796043)
watch - manpage presumes ntp tools are present by default (which they're not on rpm and deb distros, rhbz#1583669)
Jim Warner [Fri, 26 Jun 2020 05:00:00 +0000 (00:00 -0500)]
library: raise amount by which the <stat> buffer grows
We won't go as far as the merge request shown below in
increasing buffer size, but we will reduce by half the
total iterations while growing it to achieve one read.
[ and this seems in line with what was recently done ]
[ to help top under a massively parallel environment ]
[ thru 2 abreast ('4') and combined cpus ('!') modes ]
Jim Warner [Thu, 25 Jun 2020 05:00:00 +0000 (00:00 -0500)]
docs: just a few changes to that new pids man document
A patch to address the following man doc deficiencies:
. shorten NAME so there's no wrap in an 80x24 terminal
. typo wherein the 'item' parm should have been 'info'
. expand RETURN text for a potential NULL upon success
[ maybe, this might be my last tweak to this man doc ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Wed, 24 Jun 2020 05:00:00 +0000 (00:00 -0500)]
top: response to revised numa stuff in that <stat> api
[ actually, this patch goes a little beyond what was ]
[ strictly required. some messages were expanded for ]
[ clarity and should an inactive node be selected by ]
[ the '3' command, a second '2' no longer is needed. ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Wed, 24 Jun 2020 05:00:00 +0000 (00:00 -0500)]
library: changes to some numa stuff in that <stat> api
Now that we may be getting serious with documentation,
that stat module was revisited with an eye toward user
friendliness. Heck, even this author puzzled over some
of the existing notes and naming conventions employed.
So, this patch will adjust some identifiers and expand
the notes to (hopefully) better serve potential users.
The most significant change was making the STAT_TIC_ID
always valid for numa nodes, even if any are inactive.
Thus the -22222 special STAT_NODE_INVALID constant now
is applied only to STAT_TIC_NUMA_NODE. It will be used
on the cpu summary and reaps with STAT_REAP_CPUS_ONLY.
And it will also mark any numa node that was inactive.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Tue, 23 Jun 2020 22:29:14 +0000 (17:29 -0500)]
docs: tweak both of those newly created man docs a tad
An important fact was omitted in the DEBUGGING section
for the two newest man documents. Users must utilize a
macro in the header files before verification happens.
So, this commit will sneak in such mention and in that
way reduce future liability if the feature won't work.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Mon, 22 Jun 2020 05:00:00 +0000 (00:00 -0500)]
build-sys: tweak Makefile.am for two preceding patches
This commit cleans up some man document files. It also
changes the target install directory from the original
'proc/' to 'procps/' (feels like a more natural name).
[ and, now it agrees with those 2 preceding man docs ]
[ since it is obvious the tail was wagging this dog! ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Sun, 21 Jun 2020 05:00:00 +0000 (00:00 -0500)]
docs: replace 'procps_pids' stuff with revised version
The original approach contained a fatal flaw. In order
to use those man pages, users would have been required
to already know how to use the library. Or alternately
one could randomly search each of them while trying to
ascertain which function call satisfies their need and
what exactly was the proper compliment/order required.
So, this revised approach tries to simplify things and
document only what is not apparent in the header file.
Along the way, the following assumptions were germane.
1) It is the kernel folks' job to document /proc files
not to mention fields within those files. And since we
don't yet know what some of those fields represent, we
shouldn't attempt to document any of those we do know.
2) Our header file serves as an essential reference in
successful exploitation of this new library interface.
3) The description represents functions as they appear
in the header itself making them immediately familiar.
4) Armed with our header file users can easily see the
self-documenting enumerators & structures. There isn't
a need to explain them yet again in this man document.
5) Contrary to man guidelines, we shouldn't list error
codes. Simple generic guidance serves everyone better.
The following references represent a history for those
man documents this new version is intended to replace.
Jim Warner [Sat, 20 Jun 2020 05:00:00 +0000 (00:00 -0500)]
docs: update 'first cut' procps.3 with revised version
This represents the 'second cut' at providing a shared
man page that supports more than one newlib interface.
In this approach, the following assumptions were made:
1) It is the kernel folks' job to document /proc files
not to mention fields within those files. And since we
don't yet know what some of those fields represent, we
shouldn't attempt to document any of those we do know.
2) Our header files serve as an essential reference in
successful exploitation of the new library interfaces.
3) The description represents functions as they appear
in the header itself making them immediately familiar.
4) Some inconsistencies among the interfaces have been
handled more visually rather than in a narrative form.
5) Armed with our header file users can easily see the
self-documenting enumerators & structures. There isn't
a need to explain them yet again in this man document.
6) Contrary to man guidelines, we shouldn't list error
codes. Simple generic guidance serves everyone better.
Jim Warner [Fri, 19 Jun 2020 05:00:00 +0000 (00:00 -0500)]
library: rename a couple of 'reap' structs to 'reaped'
In preparation for a documentation attempt, this patch
renames 'struct reap' to 'struct reaped' in two of our
interfaces. That will bring all the non-pid interfaces
into agreement since the <stat> api already used that.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Thu, 18 Jun 2020 05:00:00 +0000 (00:00 -0500)]
top: provide for zero length character in utf8 support
This commit is prompted by the preceding change to the
library's escape.c module which, in turn, was prompted
by that issue shown below (with thanks to Konstantin).
Jim Warner [Wed, 17 Jun 2020 13:58:50 +0000 (08:58 -0500)]
library: correct that 'escape_str_utf8' guy's behavior
Thanks to Konstantin for discovering 2 problems in the
issue referenced below. That 15+ year old logic went a
little too far overboard wrestling with a utf8 string.
Henceforth, we will not treat 'x9b' as special. And we
also will handle a 'combining acute accent' correctly.
Jim Warner [Sun, 31 May 2020 05:00:00 +0000 (00:00 -0500)]
top: fix a minor startup flaw for the '2 abreast' mode
This ensures that a single '4' keystroke will reliably
toggle the new 2 abreast mode ON. Depending on whether
an older configuration file existed or whether top was
configured with '--disable-modern-top', keying the '4'
for a second time might otherwise have been necessary.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Sat, 30 May 2020 05:00:00 +0000 (00:00 -0500)]
top: help the '#define PRETEND48CPU' be more realistic
An old PRETEND8CPUS #define was reintroduced & changed
to PRETEND48CPU to better exercise the new '4' and '!'
toggles. But, the implementation simply duplicated the
/proc/stat summary line for each cpu. Therefore, every
cpu showed the same graph/detail (depending upon 't').
This patch shows the actual individual cpu information
(duplicated, of course, when total cpus are exceeded).
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Fri, 29 May 2020 05:00:00 +0000 (00:00 -0500)]
top: preserved those new '4' and '!' toggles in rcfile
This patch will address Craig's feedback regarding the
original implementation of top's two new toggles. It's
likely other users would have questioned why they were
not saved also, once they discover these new features.
And, since the minimum terminal width was just lowered
to 80 columns, the default for window #1 is also being
changed to show the individual cpu graphs two abreast.
[ assuming no '--disable-modern-top' for ./configure ]
Jim Warner [Fri, 29 May 2020 05:00:00 +0000 (00:00 -0500)]
top: warn users if rcfile save prevents older top read
I'm about to break older top rcfile compatibility when
preserving those two new toggles. And, though this has
happened several times over the years, we never issued
any warnings that such thing was just about to happen.
So, this patch corrects the long standing shortcoming.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Thu, 28 May 2020 05:00:00 +0000 (00:00 -0500)]
top: reduce minimum terminal width with 2 abreast mode
For the original implementation of the '4' toggle, the
minimum width was set at 165 columns. This was done to
avoid truncations when detailed cpu statistics (versus
graphs) were being displayed. Those can not be scaled.
Upon reflection, it seems more appropriate to give the
user the choice of whether or not to truncate. And, by
reducing that minimum width requirement to 80 columns,
we'll vastly expand potential use of two abreast mode.
[ we'll keep that original as '#define TOG4_NOTRUNC' ]
The patch also updates the man document appropriately.
Along the way, we will trade the potentially confusing
word 'adjacent' for the more natural 'additional' when
detailing the '!' toggle in 4b. Summary-Area-Commands.
Jim Warner [Sun, 24 May 2020 16:25:01 +0000 (11:25 -0500)]
top: adapt former PRETEND8CPUS #define as PRETEND48CPU
This patch simply allows for better testing of our two
new toggles: '4' (2 abreast) plus '!' (combined cpus).
It had previously been dropped under the newlib branch
since top no longer managed cpus. However, now that we
have those new toggles, it seemed worth the efforts to
once again re-imagine then implement such a provision.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jim Warner [Sat, 23 May 2020 13:51:43 +0000 (08:51 -0500)]
top: add '!' toggle for combined cpus display, program
When implementing that earlier '4' toggle, in response
to the issue referenced below, I got to thinking about
those environments with massively parallel processors.
Such environments may not benefit from the '4' toggle.
So, I decided to implement a feature that could enable
use of those '1' and/or '4' toggles no matter how many
active processors top may have ultimately encountered.
With the new '!' toggle, adjacent cpus can be combined
to any degree, represented as a single cpu group/line.
Jim Warner [Fri, 22 May 2020 05:00:00 +0000 (00:00 -0500)]
top: add '4' toggle for 2 abreast cpu display, program
In the back of my mind, I've always wanted to enable a
two abreast cpu display. Folks with massively parallel
machines must surely have been frustrated with the '1'
toggle when Off (individual cpus in the Summary Area).
So, I'll use that recently raised issue shown below as
a justification for finally implementing this feature.
Dylan Swiggett [Tue, 29 Nov 2016 22:34:37 +0000 (22:34 +0000)]
Fixes small bug in struct proc_t documentation.
From http://man7.org/linux/man-pages/man5/proc.5.html:
(22) starttime %llu
The time the process started after system boot. In
kernels before Linux 2.6, this value was expressed
in jiffies. Since Linux 2.6, the value is expressed
in clock ticks (divide by sysconf(_SC_CLK_TCK)).
Craig Small [Tue, 28 Apr 2020 09:40:07 +0000 (19:40 +1000)]
build-sys: Enable testing of sigqueue
The referenced commits enavled both pkill and kill to send an integer to
the killed or signalled process. The test_process now will report on the
integer if sent and the testsuite changes take advantage of this
new feature.
Another process make/destroy set had to be made as using spawn
instead of exec changes both the SID and TTY for the underlying
process, making other tests fail.
Craig Small [Fri, 24 Apr 2020 07:42:58 +0000 (17:42 +1000)]
free: Adjust space to really use 9 chars
@steffhip found that while the translation hint said use 9 characters in
the free headers, it really was only 7.
Currently each line is constructed with the following (in non wide format):
Header + 6 Columns. The header takes 7 characters and each column is 11
characters wide and prefixed with one space. Thus we have
7 + (1 + 11) * 6 = 79 characters for each line
By dropping the leading space for the first column after the header -the
header is already terminated by a colon- one could indeed provide the needed
9 letters for the header and thus have 9 + 11 * 1 + (1 + 11) * 5 = 80 Chars
per line which would fit into one line.
Jim Warner [Tue, 14 Apr 2020 05:00:00 +0000 (00:00 -0500)]
library: adapted to the latest lxc conventions (again)
Well, shit! With release 4.0 on March 25th the lxc/lxd
folks have stuck it to us once again. They changed the
cgroup lxc prefix used to identify the container name.
Signed-off-by: Jim Warner <james.warner@comcast.net>
Jan Rybar [Tue, 7 Apr 2020 11:41:48 +0000 (13:41 +0200)]
pidof: show worker threads
Reimplementation of pidof for procps toolset contains sort of deactivated code and does not return results for processes without task.cmdline entry (usually kernel worker threads). Old pidof and pgrep do that in comparison. Despite all perks provided by using pgrep instead, pidof should show those workers again.
Jim Warner [Sun, 29 Mar 2020 05:00:00 +0000 (00:00 -0500)]
top: for symmetry with 'E' add 'e' command line switch
Several years after the 'e' & 'E' interactive commands
were introduce to affect memory scaling, an 'E' switch
was added. This was after discovering a dropped Redhat
patch which provided a unique 'M' command line switch.
If only for symmetry it makes sense to offer a similar
command switch ('e') for the Task Area memory scaling.
As was true with 'E', top's help text will show 'e' as
if it were a switch without arguments in order to keep
help text displayed without wrap in an 80x24 terminal.
The man page, however, will show all of the arguments.
projects / procps-ng / log