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slapd shutdown during load test (ITS#3295)
Full_Name: Ashish Gawarikar
Version: 2.1.30
OS: Solaris 9
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (63.211.143.38)
Test steps,
1) test machine running CDS 1.7 (openldap 2.1.30 DB 4.2.52 patch 2) has 4 x 450
MHz, 1024M RAM.
2) the test script queries against slapd at the rate ~200 queries/second. After
~~385930 successful queries, slapd died.
the log level set in slapd.conf file is 256. Only thing logged in syslog file
is,
......
Aug 10 18:52:55 testmachine slapd[6606]: [ID 542995 local4.debug] slapd
shutdown: waiting for 2 threads to terminate
Aug 10 18:52:55 testmachine slapd[6606]: [ID 952275 local4.debug] conn=385934
fd=22 closed
Aug 10 18:52:55 testmachine slapd[6606]: [ID 952275 local4.debug] conn=385931
fd=16 closed
Aug 10 18:52:55 testmachine slapd[6606]: [ID 486161 local4.debug] slapd
stopped.
3) can't find core file.
4) extra information about the test machine before slapd died, the following was
recorded from a earlier run,
recorded data every 2 mins for slapd process size (using ps -eo vsz), vmstat,
open files for slapd (using lsof command).
Mon Aug 9 15:10:00 PDT 2004
===========================================
3:10pm up 2 day(s), 3:28, 2 users, load average: 2.74, 2.94, 2.75
26281 slapd 107120 (VSZ)
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 s1 s6 -- in sy cs us sy id
0 0 0 1331840 810152 3 29 1 0 0 0 0 1 0 0 0 797 1258 807 1 1 98
1 0 0 1221136 777288 0 7 0 0 0 0 0 1 0 0 0 2758 21075 9736 10 12 79
open files for slapd pid 26281: 19
Mon Aug 9 15:12:03 PDT 2004
===========================================
3:12pm up 2 day(s), 3:30, 2 users, load average: 1.52, 2.42, 2.58
26281 slapd 123632
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 s1 s6 -- in sy cs us sy id
0 0 0 1331768 810128 3 29 1 0 0 0 0 1 0 0 0 798 1272 813 1 1 98
1 0 0 1204520 776032 0 7 0 0 0 0 0 39 0 0 0 3105 20460 8894 18 9 73
open files for pid 26281: 19
Mon Aug 9 15:14:07 PDT 2004
===========================================
3:14pm up 2 day(s), 3:32, 2 users, load average: 1.42, 2.08, 2.43
26281 slapd 123632
kthr memory page disk faults cpu
r b w swap free re mf pi po fr de sr s0 s1 s6 -- in sy cs us sy id
0 0 0 1331680 810104 3 29 1 0 0 0 0 1 0 0 0 799 1285 819 1 1 98
0 0 0 1204448 775888 0 7 0 0 0 0 0 1 0 0 0 2750 20936 9712 18 4 78
open files for pid 26281: 20
total handles: 20
PS: I will send you the query script I used for the load test if you need it for
debugging the problem.