From: Thomas Tonino <ttonino@users.sf.net>
To: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [2.4 patch] remove obsolete disk statistics header from /proc/partitions
Date: Fri, 05 Jul 2002 17:34:03 +0200 [thread overview]
Message-ID: <3D25BC6B.8060308@users.sf.net> (raw)
Adrian Bunk wrote:
> Marcelos' BK repository (that will become 2.4.19-rc2) includes a patch to
> remove these statistics completely from /proc/partitions...
I certainly hope they move elsewhere; totally removing these is bad news
for anyone running a server that does disk I/O.
If the bugginess of part of the data is a problem, remove that data for
the time being. I can also imagine people feel it is bloated (blocks and
KB/sec), and maybe it should be reorganized to move elsewhere.
But measurement is important - the saying here is "meten is weten" - and
should not be removed from the kernel.
As for correcting: I can imagine a really dirty fix decrementing the
number of running requests once a second, on top of the fix in 2.5 that
prevents the number from going negative. The extra decrement makes disk
performance appear about 1% higher than it should: not a big falsification.
Thomas
next reply other threads:[~2002-07-05 15:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-07-05 15:34 Thomas Tonino [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-07-04 19:50 [2.4 patch] remove obsolete disk statistics header from /proc/partitions Adrian Bunk
2002-07-05 14:12 ` Marcelo Tosatti
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