Hi Bob, On Mon, Dec 5, 2011 at 11:19 AM, Bob Friesenhahn < bfrie...@simple.dallas.tx.us> wrote:
> On Mon, 5 Dec 2011, Lachlan Mulcahy wrote: > >> genunix`list_next ** 5822 3.7% >> unix`mach_cpu_idle ** 150261 96.1% >> > > Rather idle. Actually this is a bit misleading since it is averaged over all the cores in the system. This system has 24 cores and the approximate 90% used on a single core in system time can be shown to be 3.75% 90 / 24 = 3.75 Similarly 23/24 cores are close to 100% idle. Top shows: > > PID USERNAME NLWP PRI NICE SIZE RES STATE TIME CPU COMMAND > 22945 root 1 60 0 13M 3004K cpu/6 144:21 3.79% zfs > 550 root 28 59 0 39M 22M sleep 10:19 0.06% fmd > Having 'fmd' (fault monitor daemon) show up in top at all is rather ominous > since it implies that faults are actively being reported. You might want > to look into what is making it active. Nothing in /var/adm/messages as this is the last two days entries: Dec 4 18:46:20 mslvstdp03r sshd[20926]: [ID 800047 auth.crit] fatal: Read from socket failed: Connection reset by peer Dec 5 01:40:07 mslvstdp03r sshd[21808]: [ID 800047 auth.crit] fatal: Read from socket failed: Connection reset by peer Anything else you suggest I'd check for faults? (Though I'm sort of doubting it is an issue, I'm happy to be thorough) So I'm lead to believe that zfs receive is spending almost 100% of a > single CPUs time doing a lot of > genunix`list_next ... > Or maybe it is only doing 3.7% of this. There seems to be a whole lot of > nothing going on. See the math above -- also mpstat shows a single CPU at around 90% system time and since top reports zfs as the only active process the circumstantial evidence is fairly indicative. > Any ideas what is going on here? > Definitely check if low-level faults are being reported to fmd. > Any logs other than /var/adm/messages I should check (apologies, I'm quite new to (open)solaris ) Regards, -- Lachlan Mulcahy Senior DBA, Marin Software Inc. San Francisco, USA AU Mobile: +61 458 448 721 US Mobile: +1 (415) 867 2839 Office : +1 (415) 671 6080
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