1 2009-xx-xx - PgBouncer 1.3.2 - ""
5 * Track libevent state in sbuf.c to avoid double event_del(). Although
6 it usually is safe, it does not seem to work 100%.
8 * Disable maintenance during SUSPEND. Otherwise with short timeouts
9 the old bouncer could close few connections after sending them over.
11 * Apply client_login_timeout to clients waiting for welcome packet
12 (first server connection). Otherwise they can stay waiting
13 infinitely, unless there is query_timeout set.
15 * win32: Add switch -U/-P to -regservice to let user pick account
16 to run service under. Old automatic choice between Local Service and
17 Local System was not reliable enough.
19 * console: Remove \0 from end of text columns. It was hard to notice,
20 as C clients were fine with it.
22 * Documentation improvements. (Greg Sabino Mullane)
24 * Clarify few login-related log messages.
26 2009-07-06 - PgBouncer 1.3.1 - "Now fully conforming to NSA monitoring requirements"
30 * Fix problem with sbuf_loopcnt which could make connections hang.
31 If query or result length is nearby of multiple of (pktlen*sbuf_loopcnt)
32 [10k by default], it could stay waiting for more data which will not
35 * Make database reconfigure immediate. Currently old connections
36 could be reused after SIGHUP.
38 * Fix SHOW DATABASES which was broken due to column addition.
40 * Console access was disabled when "auth_mode=any" as pgbouncer dropped username.
41 Fix: if "auth_mode=any", allow any user to console as admin.
43 * Fix bad CUSTOM_ALIGN macro. Luckily it's unused if OS already
44 defines ALIGN macro thus seems the bug has not happened in wild.
46 * win32: call WSAStartup() always, not only in daemon mode
47 as config parsing wants to resolve hosts.
49 * win32: put quotes around config filename in service
50 cmdline to allow spaces in paths. Executable path
51 does not seem to need it due to some win32 magic.
53 * Add STATS to SHOW HELP text.
55 * doc/usage.txt: the time units in console results are in
56 microseconds, not milliseconds.
58 2009-02-18 - PgBouncer 1.3 - "New Ki-Smash Finishing Move"
62 * IANA has assigned port 6432 to be official port for PgBouncer.
63 Thus the default port number has changed to 6432. Existing
64 individual users do not need to change, but if you distribute
65 packages of PgBouncer, please change the package default
68 * Dynamic database creation (David Galoyan)
70 Now you can define database with name "*". If defined, it's connect
71 string will be used for all undefined databases. Useful mostly
72 for test / dev environments.
74 * Windows support (Hiroshi Saito)
76 PgBouncer runs on Windows 2000+ now. Command line usage stays same,
77 except it cannot run as daemon and cannot do online reboot.
78 To run as service, define parameter service_name in config. Then:
80 > pgbouncer.exe config.ini -regservice
81 > net start SERVICE_NAME
83 To stop and unregister:
85 > net stop SERVICE_NAME
86 > pgbouncer.exe config.ini -unregservice
88 To use Windows Event Log, event DLL needs to be registered first:
90 > regsrv32 pgbevent.dll
92 Afterwards you can set "syslog = 1" in config.
96 * Database names in config file can now be quoted with standard SQL
97 ident quoting, to allow non-standard characters in db names.
99 * New tunables: 'reserve_pool_size' and 'reserve_pool_timeout'.
100 In case there are clients in pool that have waited more that
101 'reserve_pool_timeout' seconds, 'reserve_pool_size' specifies
102 the number of connections that can be added to pool. It can also
103 set per-pool with 'reserve_pool' connection variable.
105 * New tunable 'sbuf_loopcnt' to limit time spent on one socket.
107 In some situations - eg SMP server, local Postgres and fast network -
108 pgbouncer can run recv()->send() loop many times without blocking
109 on either side. But that means other connections will stall for
110 a long time. To make processing more fair, limit the times
111 of doing recv()->send() one socket. If count reaches limit,
112 just proceed processing other sockets. The processing for
113 that socket will resume on next event loop.
115 Thanks to Alexander Schöcke for report and testing.
117 * crypt() authentication is now optional, as it was removed from Postgres.
118 If OS does not provide it, pgbouncer works fine without it.
120 * Add milliseconds to log timestamps.
122 * Replace old MD5 implementation with more compact one.
124 * Update ISC licence with the FSF clarification.
128 * In case event_del() reports failure, just proceed with cleanup.
129 Previously pgbouncer retried it, in case the failure was due ENOMEM.
130 But this has caused log floods with inifinite repeats, so it seems
131 libevent does not like it.
133 Why event_del() report failure first time is still mystery.
135 * --enable-debug now just toggles whether debug info is stripped from binary.
136 It no longer plays with -fomit-frame-pointer as it's dangerous.
138 * Fix include order, as otherwise system includes could come before
139 internal ones. Was problem for new md5.h include file.
141 * Include COPYRIGHT file in .tgz...
143 2008-08-08 - PgBouncer 1.2.3 - "Carefully Selected Bytes"
145 * Disable SO_ACCEPTFILTER code for BSDs which did not work.
146 * Include example etc/userlist.txt in tgz.
147 * Use '$(MAKE)' instead 'make' for recursion (Jørgen Austvik)
148 * Define _GNU_SOURCE as glibc is useless otherwise.
149 * Let the libevent 1.1 pass link test so we can later report "1.3b+ needed"
150 * Detect stale pidfile and remove it.
152 Thanks to Devrim GÜNDÜZ and Bjoern Metzdorf for problem reports and testing.
154 2008-08-06 - PgBouncer 1.2.2 - "Barf-bag Included"
156 * Remove 'drop_on_error', it was a bad idea. It was added as workaround
157 for broken plan cache behaviour in Postgres, but can cause damage
158 in common case when some queries always return error.
160 2008-08-04 - PgBouncer 1.2.1 - "Waterproof"
164 * New parameter 'drop_on_error' - if server throws error the connection
165 will not be reused but dropped after client finished with it. This is
166 needed to refresh plan cache. Automatic refresh does not work even in 8.3.
171 * SHOW SOCKETS/CLIENTS/SERVERS: Don't crash if socket has no buffer.
172 * Fix infinite loop on SUSPEND if suspend_timeout triggers.
176 * Use <sys/uio.h> for 'struct iovec'.
177 * Cancel shutdown (from SIGINT) on RESUME/SIGUSR2,
178 otherwise it will trigger on next PAUSE.
179 * Proper log message if console operation is canceled.
181 2008-07-29 - PgBouncer 1.2 - "Ordinary Magic Flute"
183 PgBouncer 1.2 now requires libevent version 1.3b or newer.
184 Older libevent versions crash with new restart code.
188 * Command line option (-u) and config parameter (user=) to support user
189 switching at startup. Also now pgbouncer refuses to run as root.
191 * More descriptive usage text (-h). (Jacob Coby)
192 * New database option: connect_query to allow run a query on new
193 connections before they are taken into use. (Teodor Sigaev)
194 * New config var 'ignore_startup_parameters' to allow and ignore
195 extra parameters in startup packet. By default only 'database'
196 and 'user' are allowed, all others raise error. This is needed
197 to tolerate overenthusiastic JDBC wanting to unconditionally
198 set 'extra_float_digits=2' in startup packet.
199 * Logging to syslog: new parameters syslog=0/1 and
200 syslog_facility=daemon/user/local0.
201 * Less scary online restart (-R)
202 - Move FD loading before fork, so it logs to console and can be canceled by ^C
203 - Keep SHUTDOWN after fork, so ^C would be safe
204 - A connect() is attempted to unix socket to see if anyone is listening.
205 Now -R can be used even when no previous process was running. If there
206 is previous process, but -R is not used, startup fails.
207 * New console commands:
208 - SHOW TOTALS that shows stats summary (as goes to log) plus mem usage.
209 - SHOW ACTIVE_SOCKETS - like show sockets; but filter only active ones.
211 = Less visible features =
213 * suspend_timeout - drop stalled conns and long logins. This brings
214 additional safety to reboot.
215 * When remote database throws error on logging in, notify clients.
216 * Removing a database from config and reloading works - all connections
217 are killed and the database is removed.
218 * Fake some parameters on console SHOW/SET commands to be more Postgres-like.
219 That was needed to allow psycopg to connect to console.
220 (client_encoding/default_transaction_isolation/datestyle/timezone)
221 * Make server_lifetime=0 disconnect server connection immediately
222 after first use. Previously "0" made PgBouncer ignore server age.
223 As this behavior was undocumented, there should not be any users
225 * Internal improvements:
226 - Packet buffers are allocated lazily and reused. This should bring
227 huge decrease in memory usage. This also makes realistic to use
228 big pktbuf with lot of connections.
229 - Lot's of error handling improvements, PgBouncer should now
230 survive OOM situations gracefully.
231 - Use slab allocator for memory management.
232 - Lots of code cleanups.
236 * Only single accept() was issued per event loop which could
237 cause connection backlog when having high amount of connection
238 attempts. Now the listening socket is always drained fully,
239 which should fix this.
240 * Handle EINTR from connect().
241 * Make configure.ac compatible with autoconf 2.59.
242 * Solaris compatibility fixes (Magne Mæhre)
244 2007-12-10 - PgBouncer 1.1.2 - "The Hammer"
248 * Disconnects because of server_lifetime are now separated by
249 (server_lifetime / pool_size) seconds. This avoids pgbouncer
250 causing reconnect floods.
254 * Online upgrade 1.0 -> 1.1 problems:
255 - 1.0 does not track server parameters, so they stay NULL
256 but 1.1 did not expect it and crashed.
257 - If server params are unknown, but client ones are set,
258 then issue a SET for them, instead complaining.
259 * Remove temp debug statements that were accidentally left
260 in code on INFO level, so they polluted logs.
261 * Unbroke debian/changelog
265 * reorder struct SBuf fields to get better alignment for buffer.
267 2007-10-26 - PgBouncer 1.1.1 - "Breakdancing Bee"
271 * Server parameter cache could stay uninitialized, which caused
272 unnecessary SET of them. This caused problem on 8.1 which
273 does not allow touching standard_conforming_strings.
274 (Thanks to Dimitri Fontaine for report & testing.)
277 * Include doc/fixman.py in .tgz.
279 2007-10-09 - PgBouncer 1.1 - "Mad-Hat Toolbox"
283 * Keep track of following server parameters:
285 client_encoding datestyle, timezone, standard_conforming_strings
287 * Database connect string enhancements:
288 - Accept hostname in host=
289 - Accept custom unix socket location in host=
290 - Accept quoted values: password=' asd''foo'
292 * New config var: server_reset_query, to be sent immidiately after release
293 * New config var: server_round_robin, to switch between LIFO and RR.
294 * Cancel pkt sent for idle connection does not drop it anymore.
295 * Cancel with ^C from psql works for SUSPEND / PAUSE.
296 * Print FD limits on startup.
297 * When suspending, try to hit packet boundary ASAP.
298 * Add 'timezone' to database parameters.
299 * Use longlived logfile fd. Reopened on SIGHUP / RELOAD;
300 * Local connection endpoint info in SHOW SERVERS/CLIENTS/SOCKETS.
304 * More debug log messages include socket info.
305 * Magic number removal and error message cleanup. (David Fetter)
306 * Wrapper struct for current pkt info. Removes lot of compexity.
310 * Detect invalid pkt headers better.
311 * auth_file modification check was broken, which made pgbouncer
314 2007-06-18 - PgBouncer 1.0.8 - "Undead Shovel Jutsu"
318 * Fix crash in cancel packet handling. (^C from psql)
322 * PAUSE <db>; RESUME <db>; works now.
323 * Cleanup of console command parsing.
324 * Disable expensive in-list assert check.
326 2007-04-19 - PgBouncer 1.0.7 - "With Vitamin A-Z"
328 * Several error/notice packets with send() blocking between
329 triggered assert. Fix it by removing flushing logic altogether.
330 As pgbouncer does not actively buffer anything, its not needed.
331 It was a remnant from the time when buffering was pushed to
332 kernel with MSG_MORE.
333 * Additionally avoid calling recv() logic when sending unblocks.
334 * List search code for admin_users and stats_users
335 mishandled partial finds. Fix it.
336 * Standardise UNIX socket peer UID finding to getpeereid().
338 2007-04-12 - PgBouncer 1.0.6 - "Daily Dose"
340 * The "Disable maintenance during the takeover" fix could
341 disable maintenance altogether. Fix it.
342 * Compilation fix for FreeBSD, <sys/ucred.h> requires <sys/param.h> there.
343 Thanks go to Robert Gogolok for report.
345 2007-04-11 - PgBouncer 1.0.5 - "Enough for today"
347 * Fix online-restart bugs:
348 - Set ->ready for idle servers.
349 - Remove obsolete code from use_client_socket()
350 - Disable maintenance during the takeover.
352 2007-04-11 - PgBouncer 1.0.4 - "Last 'last' bug"
354 * Notice from idle server tagged server dirty.
355 release_server() did not expect it. Fix it
358 2007-04-11 - PgBouncer 1.0.3 - "Fearless Fork"
362 * Some error handling was missing in login path, so dying
363 connection there could trigger asserts.
364 * Cleanup of asserts in sbuf.c to catch problems earlier.
365 * Create core when Assert() triggers.
369 * New config vars: log_connections, log_disconnections,
370 log_pooler_errors to turn on/off noise.
371 * Config var: client_login_timeout to kill dead connections
372 in login phase that could stall SUSPEND and thus online restart.
374 2007-03-28 - PgBouncer 1.0.2 - "Supersonic Spoon"
376 * libevent may report a deleted event inside same loop.
377 Avoid socket reuse for one loop.
378 * release_server() from disconnect_client() didnt look
379 it the packet was actually sent.
381 2007-03-15 - PgBouncer 1.0.1 - "Alien technology"
385 * Mixed usage of cached and non-cached time, plus unsiged usec_t typedef
386 created spurious query_timeout errors.
387 * Fix rare case when socket woken up from send-wait could stay stalling.
388 * More fair queueing of server connections. Before, a new query could
389 get a server connections before older one.
390 * Delay server release until everything is guaranteed to be sent.
394 * SHOW SOCKETS command to have detailed info about state state.
395 * Put PgSocket ptr to log, to help tracking one connection.
396 * In console, allow SELECT in place of SHOW.
397 * Various code cleanups.
399 2007-03-13 - PgBouncer 1.0 - "Tuunitud bemm"
401 * First public release.