Re: Periodic momentary loss of focus in 2.1.3
Re: Periodic momentary loss of focus in 2.1.3
- Subject: Re: Periodic momentary loss of focus in 2.1.3
- From: Tom Lane <email@hidden>
- Date: Sun, 10 Feb 2008 13:54:17 -0500
- Comments: In-reply-to robert delius royar <email@hidden> message dated "Sun, 10 Feb 2008 13:02:46 -0500"
robert delius royar <email@hidden> writes:
> Sun, 10 Feb 2008 (12:11 -0500 UTC) Tom Lane wrote:
>> I now have three or four Shark traces of the dropout, all showing "iCal
>> Helper" being started (from launchd), running for a little while, and
>> exiting, right at the time of the dropout ---
> I do not have an iCal Helper process (ps auxww | grep -i 'ica[l]'
> returns nothing).
I think you missed the point: that process doesn't exist continuously.
It gets launched once an hour and runs for only a second or so.
> However, in addition to backupd, I have seen mds
> spike at the time the drop out occurs (and occasionally mdworker).
> Doesn't mds tie into file system events?
What I see iCal Helper doing in the trace is a whole lot of stat() calls
(probably it's checking for updates to iCal data files). So it
definitely could provoke disk I/O, which might correlate to the spike
you're noticing in md activity.
regards, tom lane
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