/root > dtrace -n 'syscall:::entry { @[execname,probefunc] = count() }'
Password:
dtrace: description 'syscall:::entry ' matched 237 probes
[...]
powermt stat1029
sas.e9bc09 read1310
mstragent waitsys 1343
bgscollect
Thanks for your response.
For moment, we can't patch Oracle version (production environment).
But on another server (which contains containers too), we have the same problem:
> sar 1 100
SunOS 5.10 Generic_137137-09 sun4u10/23/2009
09:00:17%usr%sys%wio %idle
09:00:18 12
I've tried your script lockutil and now the output:
lockutil -n 44 lockstat_kWP.out
CPU-util Lock Caller
0.191 kstat_chain_lock kstat_hold
0.036 kstat_chain_lock kstat_rele
0.014 mod_lock mod_hold_stub
0.006 kpr_mutexhat_page_rel
> Any chance this machine is running many instances of Oracle? I've seen
> very high kstat usage in that scenario.
Yes: ~75 instances in 6 zones).
> Next step would be to add a '-s 20' to the lockstat to get a kernel
> stack for this lock.
The output:
Adaptive mutex spin: 113576 events in 11.110
OK, I've tried lockstat; here, the lockstat.out
Adaptive mutex spin: 75935 events in 10.334 seconds (7348 events/sec)
Count indv cuml rcnt nsec Lock Caller
---
2338 3% 3% 0.0016898 0x1999a78
OK, I tried the DTrace script "hotkernel" et the result is:
[...]
ce`ce_intr 1245 0.4%
unix`page_lookup_nowait 1330 0.5%
genunix`rm_assize1448 0.5%
genunix`segmap_getmapflt
Hi,
On a Solaris 10 server, with 'top' command, we have:
CPU states: 28.9% idle, 14.2% user, 56.9% kernel, 0.0% iowait, 0.0% swap
How to know where is spent kernel usage please ?
Thank you in advance.
Matt
--
This message posted from opensolaris.org
___
Hello,
We have a new T2000 server with one CPU (32 logicals CPU).
We control these CPUs with mpstat and sometimes we have a thread with idle=0.
How to know which process or LWP runs on this thread please ?
Thank you in advance, for your reply.
Regards,
Matt
This message posted from opensola
