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Date:      Thu, 26 Aug 2004 13:45:27 +0900
From:      Jun Kuriyama <kuriyama@imgsrc.co.jp>
To:        Tim Kientzle <kientzle@freebsd.org>
Cc:        Current <freebsd-current@freebsd.org>
Subject:   Re: bsdtar eats CPU when extracting POSIX tar archive
Message-ID:  <7moeky5wyg.wl@black.imgsrc.co.jp>
In-Reply-To: <412D68AD.7050906@freebsd.org>
References:  <7m3c2e88xk.wl@black.imgsrc.co.jp> <412D6534.9030503@freebsd.org> <412D68AD.7050906@freebsd.org>

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At Wed, 25 Aug 2004 21:35:57 -0700,
Tim Kientzle wrote:
> I pulled the current distfile for the vtun port,
> and it's definitely a GNU format archive, so I
> wasn't able to easily reproduce your problem.
> 
> I'm suspicious that all of the time being used is
> system time.  Could you try to find out which
> system calls are taking so long:
> 
>    ktrace tar xf /var/tmp/vtun-2.6.tar
>    kdump -R -m 16
> 
> That might shed some light on matters.

Thank you for your investigation.  This problem is happened on my dual
P-III box, but I cannot reproduce it on another P4 box.  I'll try what
is different on them.

http://www.imgsrc.co.jp/~kuriyama/tmp/20040826-tar-kdump.log.gz

Looks kqueue related?


-- 
Jun Kuriyama <kuriyama@imgsrc.co.jp> // IMG SRC, Inc.
             <kuriyama@FreeBSD.org> // FreeBSD Project



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