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Date: Wed, 28 Jul 2004 20:19:03 -0700
From: <sarbx-cygwin6344 AT mailblocks DOT com>
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Subject: cygserver - Postgres Multiple connection Load Testing - Inifinte Loop
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To: cygwin AT cygwin DOT com

$ postgres --version
postgres (PostgreSQL) 7.4.3

$ uname -a
CYGWIN_NT-5.0 sbellan-nb 1.5.10(0.116/4/2) 2004-05-25 22:07 i686 
unknown unknown
Cygwin

While doing Load testing using DOTS, after 5 to 6 connections the 
machine starts to slow down and
cygserver seems to hog most of the CPU. After running the cygserve in 
debug mode , I see the following
in the log file repeating infinitely.

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/bsd_mutex.cc, 
line 189:
Unlocked mutex semid
cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/bsd_mutex.cc, 
line 227:
Try locking mutex semid
cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/bsd_mutex.cc, 
line 227:
Locked mutex semid
cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1112:
semop: good morning (error=0)!

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1121:
semop: good morning!

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1049:
semop: semaptr=A057880, sem_base=A056E04, semptr=A056E88, sem[11]=0 : 
op=-1, fl
ag=wait

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1053:
semop: can't do it now

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1086:
semop: rollback 0 through -1

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1109:
semop: good night!

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/bsd_mutex.cc, 
line 189:
Unlocked mutex semid
cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/bsd_mutex.cc, 
line 227:
Try locking mutex semid
cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/bsd_mutex.cc, 
line 227:
Locked mutex semid
cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1112:
semop: good morning (error=0)!

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1121:
semop: good morning!

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1049:
semop: semaptr=A057880, sem_base=A056E04, semptr=A056E88, sem[11]=0 : 
op=-1, fl
ag=wait

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1053:
semop: can't do it now

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1086:
semop: rollback 0 through -1

cygserver: /netrel/src/cygwin-1.5.10-3/winsup/cygserver/sysv_sem.cc, 
line 1109:
semop: good night!
...
...
...
...
...
...

Any help would be appreciated.



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