Followup - this system has a lot of kernel activity and I/O - (top typically
shows CPU > 50% kernel) - but the hotkernel blorked with this (eventhough
load avg was only ~2 and command line is responsive):
[EMAIL PROTECTED]:~ 1:41pm 114 # ./hotkernel
Sampling... Hit Ctrl-C to end.
dtrace: processing aborted: Abort due to systemic unresponsiveness
FUNCTION COUNT PCNT
I'm working my way down the toolkit list - any help on pinpointing the
bottlenecks with the appropriate 1st pass tools appreciated.
Here is some iotop output - nothing surprising here - sendmail, spamd and
mailman (python) are generating I/O:
2008 Jan 21 13:49:54, load: 1.35, disk_r: 32 KB, disk_w: 2424 KB
UID PID PPID CMD DEVICE MAJ MIN D BYTES
0 13413 13412 sendmail sd0 61 0 W 2048
0 13411 13406 sendmail sd0 61 0 W 4096
0 13409 13370 sendmail sd0 61 0 W 5120
0 3 0 fsflush sd0 61 0 W 8192
0 13420 1 sendmail sd0 61 0 W 22528
555 3809 3140 spamd sd0 61 0 R 32768
0 13419 496 sendmail sd0 61 0 W 41984
0 13412 496 sendmail sd0 61 0 W 44032
0 13370 496 sendmail sd0 61 0 W 50688
0 13413 1 sendmail sd0 61 0 W 51712
0 13406 496 sendmail sd0 61 0 W 71680
0 13414 496 sendmail sd0 61 0 W 96256
35 24406 24400 python2.4 sd0 61 0 W 172032
0 0 0 sched sd0 61 0 W 318464
555 3809 3140 spamd sd0 61 0 W 405504
35 24409 24400 python2.4 sd0 61 0 W 1006592
Ideally I'd like to know what the fixable (tunable) bottlenecks are on a
system that otherwise has plenty of CPU and memory available
Thanks
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Fletcher
Cocquyt
Sent: Monday, January 21, 2008 1:39 PM
To: dtrace-discuss@opensolaris.org
Subject: [dtrace-discuss] tcptop error: failed to resolveSS_TCP_FAST_ACCEPT:
Unknown variable name
Hi, I am trying to debug the bottle neck(s) in a Solaris 10
Mailman/Spamassassin/Sendmail VMWare VM and get the following error from
tcptop:
[EMAIL PROTECTED]:~ 1:35pm 103 # ./tcptop
dtrace: failed to compile script /dev/fd/11: line 40: failed to resolve
SS_TCP_FAST_ACCEPT: Unknown variable name
thanks for any insight,
Fletcher.
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