Date: Thu, 28 Apr 2011 11:15:17 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Julian Elischer <julian@freebsd.org> Cc: Alexander Best <arundel@freebsd.org>, Doug Barton <dougb@freebsd.org>, current@freebsd.org, Steve Wills <swills@freebsd.org> Subject: Re: responsiveness during IO tasks Message-ID: <4DB92215.2060501@FreeBSD.org> In-Reply-To: <4DB92143.5010108@freebsd.org> References: <4DB620CB.50302@FreeBSD.org> <20110426103741.GA25031@freebsd.org> <4DB8AA4B.1070502@FreeBSD.org> <4DB8F833.7090604@FreeBSD.org> <4DB92143.5010108@freebsd.org>
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Julian Elischer wrote: >> Doug Barton wrote: >> No problem, just let's hunt things down. I'll wait for that larger post. >> In meantime, if it is related to eventtimers, it would be good to >> collect more detailed information. You could try to make timer run >> during idle (kern.eventtimer.idletick). You could try to switch timer >> from one-shot to periodic mode (kern.eventtimer.periodic). You could >> also try to switch to another timer (kern.eventtimer.timer). > > kern.eventtimer.periodic needs to be disabled to run 9.x on xen > (as of a few months ago) Yes, but it needs to be enabled (it is disabled by default). I remember about it and going to experiment with it nearest time. -- Alexander Motin
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