Hi All,
I'm seeing a funny with the new WAL aware postmaster.
After doing a "kill" on the postmaster process I get another
postmaster process which appears to be spinning on a spinlock.
I left it for almost an hour whilst I did something else.
I believe the spinlock code on my system, SPARCLinux, is OK
from running the s_lock_test, see below.
Any ideas what's happening?
Keith.
[postgres@sparclinux pgsql]$ ps -aux| grep post
postgres 19364 0.0 1.9 1936 760 p0 S Sep 26 0:00 login -p -h sparc2 -f
postgres 19365 0.0 2.2 1484 880 p0 S Sep 26 0:10 -bash
postgres 27333 0.0 2.4 4012 948 p0 S 22:24 0:00 postmaster -N 16 -B 3
postgres 27385 99.6 2.9 4076 1124 p0 R 19:19 51:49 postmaster -N 16 -B 3
postgres 27409 0.0 1.3 1116 512 p0 R 20:11 0:00 ps -aux
postgres 27410 0.0 1.1 1176 448 p0 R 20:11 0:00 grep post
[postgres@sparclinux pgsql]$ gdb /usr/local/pgsql/bin/postmaster 27385
GDB is free software and you are welcome to distribute copies of itunder certain conditions; type "show copying" to see
theconditions.
There is absolutely no warranty for GDB; type "show warranty" for details.
GDB 4.16 (sparc-unknown-linux), Copyright 1996 Free Software Foundation, Inc...
/usr/local/pgsql/27385: No such file or directory.
Attaching to program `/usr/local/pgsql/bin/postmaster', process 27385
Reading symbols from /lib/libdl.so.1.8.3...done.
Reading symbols from /lib/libm.so.5.0.6...done.
Reading symbols from /usr/lib/libreadline.so.2.0...done.
Reading symbols from /lib/libtermcap.so.2.0.8...done.
Reading symbols from /usr/lib/libncurses.so.3.0...done.
Reading symbols from /lib/libc.so.5.3.12...done.
Reading symbols from /lib/ld-linux.so.1...done.
CreateCheckPoint (shutdown=1 '\001') at ../../../include/storage/s_lock.h:151
151 __asm__("ldstub [%2], %0" \
(gdb) bt
#0 CreateCheckPoint (shutdown=1 '\001') at
../../../include/storage/s_lock.h:151
#1 0x55f1c in ShutdownXLOG () at xlog.c:1426
#2 0x587e4 in BootstrapMain (argc=5, argv=0xeffff5c8) at bootstrap.c:359
#3 0xb63bc in SSDataBase (startup=0 '\000') at postmaster.c:2026
#4 0xb53f0 in pmdie (postgres_signal_arg=1469440) at postmaster.c:1254
#5 0xeffff8f0 in ?? ()
#6 0xb48cc in ServerLoop () at postmaster.c:745
#7 0xb468c in PostmasterMain (argc=4620, argv=0x120c) at postmaster.c:640
[postgres@sparclinux buffer]$ make s_lock_test
gcc -I../../../include -I../../../backend -O2 -Wall -Wmissing-prototypes
-I../.. -DS_LOCK_TEST=1 s_lock.c -os_lock_test
./s_lock_test
S_LOCK_TEST: this will hang for a few minutes and then abort with a 'stuck spinlock' message if S_LOCK()
and TAS() are working.
FATAL: s_lock(00020bf0) at s_lock.c:270, stuck spinlock. Aborting.
FATAL: s_lock(00020bf0) at s_lock.c:270, stuck spinlock. Aborting.
make: *** [s_lock_test] IOT trap/Abort (core dumped)
make: *** Deleting file `s_lock_test'
