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: robert delius royar <email@hidden>
- Date: Sun, 10 Feb 2008 14:38:34 -0500
- Organization: An Apple OS X end user
- Priority: normal
Sun, 10 Feb 2008 (13:54 -0500 UTC) Tom Lane wrote:
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.
I did not miss it, but neither did I address it properly.
I listed my top output (sorted by cpu usage), and it did not show
iCal Helper as a running process. I suspect that iCal Helper may be
higher level than this effect's cause. But it may be one of many
user-noticeable events that trigger it.
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
--
Dr. Robert Delius Royar Associate Professor of English
Morehead State University Morehead, Kentucky
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