On 11/15/2016 12:08 PM, Rich Megginson wrote:
It is also useful to get a few stacktraces which will give us detailed
information about what the server is doing. For example, if you can
"catch" the server while it is misbehaving, and get stacktraces every
second for 10 seconds.
http://www.port389.org/docs/389ds/FAQ/faq.html#debugging-hangs
One other note: I did get ten traces, at one second intervals, but they
were all mostly the same. I've attached the diff between two
haphazardly chosen traces. Any two traces differ in the same spots, as
far as I can tell.
--- stacktrace.1479256809.txt 2016-11-15 23:07:56.000000000 -0800
+++ stacktrace.1479256822.txt 2016-11-15 23:07:56.000000000 -0800
@@ -330,7 +330,7 @@
No locals.
#1 0x00007f62620d00e9 in DS_Sleep (ticks=ticks@entry=100) at ldap/servers/slapd/util.c:1035
mSecs = <optimized out>
- tm = {tv_sec = 0, tv_usec = 87821}
+ tm = {tv_sec = 0, tv_usec = 9519}
#2 0x00007f6257595907 in deadlock_threadmain (param=<optimized out>) at ldap/servers/slapd/back-ldbm/dblayer.c:4466
rval = <optimized out>
priv = 0x7f6262d16740
@@ -359,9 +359,9 @@
No locals.
#1 0x00007f62620d00e9 in DS_Sleep (ticks=ticks@entry=250) at ldap/servers/slapd/util.c:1035
mSecs = <optimized out>
- tm = {tv_sec = 0, tv_usec = 78314}
+ tm = {tv_sec = 0, tv_usec = 41801}
#2 0x00007f6257599a26 in checkpoint_threadmain (param=<optimized out>) at ldap/servers/slapd/back-ldbm/dblayer.c:4675
- time_of_last_checkpoint_completion = 1479256758
+ time_of_last_checkpoint_completion = 1479256819
interval = <optimized out>
rval = <optimized out>
priv = <optimized out>
@@ -398,7 +398,7 @@
No locals.
#1 0x00007f62620d00e9 in DS_Sleep (ticks=ticks@entry=250) at ldap/servers/slapd/util.c:1035
mSecs = <optimized out>
- tm = {tv_sec = 0, tv_usec = 137152}
+ tm = {tv_sec = 0, tv_usec = 121314}
#2 0x00007f6257595b7f in trickle_threadmain (param=<optimized out>) at ldap/servers/slapd/back-ldbm/dblayer.c:4892
interval = 250
rval = <optimized out>
@@ -428,7 +428,7 @@
No locals.
#1 0x00007f62620d00e9 in DS_Sleep (ticks=<optimized out>) at ldap/servers/slapd/util.c:1035
mSecs = <optimized out>
- tm = {tv_sec = 0, tv_usec = 323317}
+ tm = {tv_sec = 0, tv_usec = 33264}
#2 0x00007f62575e8784 in perfctrs_wait (milliseconds=milliseconds@entry=1000, priv=<optimized out>, db_env=<optimized out>) at ldap/servers/slapd/back-ldbm/perfctrs.c:100
interval = <optimized out>
#3 0x00007f6257590707 in perf_threadmain (param=<optimized out>) at ldap/servers/slapd/back-ldbm/dblayer.c:3966
@@ -601,8 +601,8 @@
No locals.
#1 0x00007f6260278c87 in pt_TimedWait (cv=cv@entry=0x7f6262fadfa8, ml=0x7f6262e01340, timeout=timeout@entry=30000) at ../../../nspr/pr/src/pthreads/ptsynch.c:264
rv = <optimized out>
- now = {tv_sec = 1479256791, tv_usec = 66145}
- tmo = {tv_sec = 1479256821, tv_nsec = 66145000}
+ now = {tv_sec = 1479256821, tv_usec = 773957}
+ tmo = {tv_sec = 1479256851, tv_nsec = 773957000}
ticks = <optimized out>
#2 0x00007f626027916e in PR_WaitCondVar (cvar=0x7f6262fadfa0, timeout=timeout@entry=30000) at ../../../nspr/pr/src/pthreads/ptsynch.c:398
rv = <optimized out>
@@ -630,12 +630,12 @@
Thread 33 (Thread 0x7f623affd700 (LWP 28293)):
#0 pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
No locals.
-#1 0x00007f6260278c87 in pt_TimedWait (cv=cv@entry=0x7f6262df6018, ml=0x7f6262df6060, timeout=timeout@entry=10000) at ../../../nspr/pr/src/pthreads/ptsynch.c:264
+#1 0x00007f6260278c87 in pt_TimedWait (cv=cv@entry=0x7f6262df6018, ml=0x7f6262df6060, timeout=timeout@entry=6000) at ../../../nspr/pr/src/pthreads/ptsynch.c:264
rv = <optimized out>
- now = {tv_sec = 1479256803, tv_usec = 310388}
- tmo = {tv_sec = 1479256813, tv_nsec = 310388000}
+ now = {tv_sec = 1479256818, tv_usec = 310760}
+ tmo = {tv_sec = 1479256824, tv_nsec = 310760000}
ticks = <optimized out>
-#2 0x00007f626027916e in PR_WaitCondVar (cvar=0x7f6262df6010, timeout=10000) at ../../../nspr/pr/src/pthreads/ptsynch.c:398
+#2 0x00007f626027916e in PR_WaitCondVar (cvar=0x7f6262df6010, timeout=6000) at ../../../nspr/pr/src/pthreads/ptsynch.c:398
rv = <optimized out>
thred = 0x7f6262f87a50
#3 0x00007f62620651e8 in eq_loop (arg=<optimized out>) at ldap/servers/slapd/eventq.c:326
@@ -2149,7 +2149,7 @@
No locals.
#1 0x00007f62620d00e9 in DS_Sleep (ticks=ticks@entry=1000) at ldap/servers/slapd/util.c:1035
mSecs = <optimized out>
- tm = {tv_sec = 0, tv_usec = 115022}
+ tm = {tv_sec = 0, tv_usec = 862699}
#2 0x00007f6262571325 in time_thread (nothing=<optimized out>) at ldap/servers/slapd/daemon.c:216
interval = 1000
#3 0x00007f626027e96b in _pt_root (arg=0x7f6262f81f70) at ../../../nspr/pr/src/pthreads/ptthread.c:212
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