Re: postgres.exe 100% CPU but no I/O - Mailing list pgsql-novice
From | Robert Schnabel |
---|---|
Subject | Re: postgres.exe 100% CPU but no I/O |
Date | |
Msg-id | 497E5383.1000206@missouri.edu Whole thread Raw |
In response to | Re: postgres.exe 100% CPU but no I/O (Guido Barosio <gbarosio@gmail.com>) |
List | pgsql-novice |
Thanks for giving me a place to start. I set log_min_duration_statement = 0 and log_min_messages = debug5. Below is the log entry for the first 2 minutes after I restarted the server. This repeats exactly every 60 seconds. As I said in the original post, there is no disk I/O being performed, just 100% CPU load. Any suggestions as to what may be causing this or where to look next? I'm a novice, hence posting to the novice list, so just saying RTFM! :) doesn't do the novice much good when they've already done that and just needs some pointers to isolate a problem. I apologize for the long log but I'm not sure exactly what is relevant and what is not. Bob -- ************************************************* Robert Schnabel Research Assistant Professor University of Missouri-Columbia Animal Sciences Unit, Rm.162 920 East Campus Drive Columbia, MO 65211-5300 Phone: 573-884-4106 Fax: 573-882-6827 http://animalgenomics.missouri.edu "Don't speak unless you can improve the silence" -various sources ************************************************* 2009-01-26 07:14:07 LOG: database system was shut down at 2009-01-26 07:13:02 2009-01-26 07:14:07 DEBUG: mapped win32 error code 2 to 2 2009-01-26 07:14:07 DEBUG: mapped win32 error code 2 to 2 2009-01-26 07:14:07 DEBUG: mapped win32 error code 2 to 2 2009-01-26 07:14:07 LOG: checkpoint record is at 160/932590C8 2009-01-26 07:14:07 LOG: redo record is at 160/932590C8; undo record is at 0/0; shutdown TRUE 2009-01-26 07:14:07 LOG: next transaction ID: 0/370293; next OID: 25596 2009-01-26 07:14:07 LOG: next MultiXactId: 1; next MultiXactOffset: 0 2009-01-26 07:14:07 LOG: database system is ready 2009-01-26 07:14:07 DEBUG: mapped win32 error code 80 to 17 2009-01-26 07:14:07 DEBUG: transaction ID wrap limit is 2147484173, limited by database "postgres" 2009-01-26 07:14:07 DEBUG: mapped win32 error code 80 to 17 2009-01-26 07:14:07 DEBUG: mapped win32 error code 80 to 17 2009-01-26 07:14:07 DEBUG: proc_exit(0) 2009-01-26 07:14:07 DEBUG: shmem_exit(0) 2009-01-26 07:14:07 DEBUG: exit(0) 2009-01-26 07:14:07 DEBUG: reaping dead processes 2009-01-26 07:14:07 DEBUG: waiting on 2 children 2009-01-26 07:14:07 DEBUG: waiting on 3 children 2009-01-26 07:14:07 DEBUG: StartTransaction 2009-01-26 07:14:07 DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 370293/1/0, nestlvl: 1, children: <> 2009-01-26 07:14:07 DEBUG: mapped win32 error code 2 to 2 2009-01-26 07:14:07 DEBUG: CommitTransaction 2009-01-26 07:14:07 DEBUG: name: unnamed; blockState: STARTED; state: INPROGR, xid/subid/cid: 370293/1/0, nestlvl: 1, children: <> 2009-01-26 07:14:07 DEBUG: autovacuum: processing database "postgres" 2009-01-26 07:14:07 DEBUG: StartTransaction 2009-01-26 07:14:07 DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 370294/1/0, nestlvl: 1, children: <> 2009-01-26 07:14:07 DEBUG: pg_authid: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_statistic: vac: 0 (threshold 560), anl: 0 (threshold 280) 2009-01-26 07:14:07 DEBUG: pg_type: vac: 0 (threshold 548), anl: 0 (threshold 274) 2009-01-26 07:14:07 DEBUG: pg_attribute: vac: 0 (threshold 826), anl: 0 (threshold 413) 2009-01-26 07:14:07 DEBUG: pg_proc: vac: 0 (threshold 886), anl: 0 (threshold 443) 2009-01-26 07:14:07 DEBUG: pg_class: vac: 0 (threshold 541), anl: 0 (threshold 270) 2009-01-26 07:14:07 DEBUG: pg_autovacuum: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_inherits: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_index: vac: 0 (threshold 515), anl: 0 (threshold 258) 2009-01-26 07:14:07 DEBUG: pg_operator: vac: 0 (threshold 633), anl: 0 (threshold 317) 2009-01-26 07:14:07 DEBUG: pg_opclass: vac: 0 (threshold 520), anl: 0 (threshold 260) 2009-01-26 07:14:07 DEBUG: pg_am: vac: 0 (threshold 501), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_amop: vac: 0 (threshold 589), anl: 0 (threshold 295) 2009-01-26 07:14:07 DEBUG: pg_amproc: vac: 0 (threshold 545), anl: 0 (threshold 272) 2009-01-26 07:14:07 DEBUG: pg_language: vac: 0 (threshold 501), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_aggregate: vac: 0 (threshold 523), anl: 0 (threshold 261) 2009-01-26 07:14:07 DEBUG: pg_rewrite: vac: 0 (threshold 515), anl: 0 (threshold 257) 2009-01-26 07:14:07 DEBUG: pg_trigger: vac: 0 (threshold 501), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_cast: vac: 0 (threshold 551), anl: 0 (threshold 276) 2009-01-26 07:14:07 DEBUG: pg_namespace: vac: 0 (threshold 501), anl: 0 (threshold 251) 2009-01-26 07:14:07 DEBUG: pg_conversion: vac: 0 (threshold 525), anl: 0 (threshold 262) 2009-01-26 07:14:07 DEBUG: pg_tablespace: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_shdepend: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_shdescription: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_database: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: pg_auth_members: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:14:07 DEBUG: CommitTransaction 2009-01-26 07:14:07 DEBUG: name: unnamed; blockState: STARTED; state: INPROGR, xid/subid/cid: 370294/1/0, nestlvl: 1, children: <> 2009-01-26 07:14:07 DEBUG: proc_exit(0) 2009-01-26 07:14:07 DEBUG: shmem_exit(0) 2009-01-26 07:14:07 DEBUG: exit(0) 2009-01-26 07:14:07 DEBUG: reaping dead processes 2009-01-26 07:14:07 DEBUG: waiting on 4 children 2009-01-26 07:14:07 DEBUG: waiting on 3 children 2009-01-26 07:14:07 DEBUG: forked new backend, pid=4220 socket=568 2009-01-26 07:14:07 DEBUG: proc_exit(0) 2009-01-26 07:14:07 DEBUG: shmem_exit(0) 2009-01-26 07:14:07 DEBUG: exit(0) 2009-01-26 07:14:07 DEBUG: reaping dead processes 2009-01-26 07:14:07 DEBUG: waiting on 4 children 2009-01-26 07:14:07 DEBUG: server process (PID 4220) exited with exit code 0 2009-01-26 07:14:07 DEBUG: waiting on 3 children 2009-01-26 07:15:07 DEBUG: StartTransaction 2009-01-26 07:15:07 DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 370295/1/0, nestlvl: 1, children: <> 2009-01-26 07:15:07 DEBUG: CommitTransaction 2009-01-26 07:15:07 DEBUG: name: unnamed; blockState: STARTED; state: INPROGR, xid/subid/cid: 370295/1/0, nestlvl: 1, children: <> 2009-01-26 07:15:07 DEBUG: autovacuum: processing database "postgres" 2009-01-26 07:15:07 DEBUG: StartTransaction 2009-01-26 07:15:07 DEBUG: name: unnamed; blockState: DEFAULT; state: INPROGR, xid/subid/cid: 370296/1/0, nestlvl: 1, children: <> 2009-01-26 07:15:07 DEBUG: pg_authid: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_statistic: vac: 0 (threshold 560), anl: 0 (threshold 280) 2009-01-26 07:15:07 DEBUG: pg_type: vac: 0 (threshold 548), anl: 0 (threshold 274) 2009-01-26 07:15:07 DEBUG: pg_attribute: vac: 0 (threshold 826), anl: 0 (threshold 413) 2009-01-26 07:15:07 DEBUG: pg_proc: vac: 0 (threshold 886), anl: 0 (threshold 443) 2009-01-26 07:15:07 DEBUG: pg_class: vac: 0 (threshold 541), anl: 0 (threshold 270) 2009-01-26 07:15:07 DEBUG: pg_autovacuum: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_inherits: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_index: vac: 0 (threshold 515), anl: 0 (threshold 258) 2009-01-26 07:15:07 DEBUG: pg_operator: vac: 0 (threshold 633), anl: 0 (threshold 317) 2009-01-26 07:15:07 DEBUG: pg_opclass: vac: 0 (threshold 520), anl: 0 (threshold 260) 2009-01-26 07:15:07 DEBUG: pg_am: vac: 0 (threshold 501), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_amop: vac: 0 (threshold 589), anl: 0 (threshold 295) 2009-01-26 07:15:07 DEBUG: pg_amproc: vac: 0 (threshold 545), anl: 0 (threshold 272) 2009-01-26 07:15:07 DEBUG: pg_language: vac: 0 (threshold 501), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_aggregate: vac: 0 (threshold 523), anl: 0 (threshold 261) 2009-01-26 07:15:07 DEBUG: pg_rewrite: vac: 0 (threshold 515), anl: 0 (threshold 257) 2009-01-26 07:15:07 DEBUG: pg_trigger: vac: 0 (threshold 501), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_cast: vac: 0 (threshold 551), anl: 0 (threshold 276) 2009-01-26 07:15:07 DEBUG: pg_namespace: vac: 0 (threshold 501), anl: 0 (threshold 251) 2009-01-26 07:15:07 DEBUG: pg_conversion: vac: 0 (threshold 525), anl: 0 (threshold 262) 2009-01-26 07:15:07 DEBUG: pg_tablespace: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_shdepend: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_shdescription: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_database: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: pg_auth_members: vac: 0 (threshold 500), anl: 0 (threshold 250) 2009-01-26 07:15:07 DEBUG: CommitTransaction 2009-01-26 07:15:07 DEBUG: name: unnamed; blockState: STARTED; state: INPROGR, xid/subid/cid: 370296/1/0, nestlvl: 1, children: <> 2009-01-26 07:15:07 DEBUG: proc_exit(0) 2009-01-26 07:15:07 DEBUG: shmem_exit(0) 2009-01-26 07:15:07 DEBUG: exit(0) 2009-01-26 07:15:08 DEBUG: reaping dead processes 2009-01-26 07:15:08 DEBUG: waiting on 4 children 2009-01-26 07:15:08 DEBUG: waiting on 3 children Guido Barosio wrote: > Robert, > > As a first attempt, set log_min_duration_statement to 0 in your > configuration file and restart the service, do not forget to tail your > log file in order to understand what is going on. There are other > parameter that will help you identify potential problems, all of them > related with log_*. RTFM! :) > > Another tip, Process Explorer, a tool for Windows that shows all > the stuff running in windows such as the Linux 'ps' program but with a > fancy UI. It's a freeware tool, so try it. It should present you the > PID of the offending process; this PID plus some SQL magic and the > pg_stat_* tables will let you know what's going on. > > 2 cents > gb.-
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