Date: Thu, 25 Nov 2010 18:38:08 +0200 From: Andriy Gapon <avg@freebsd.org> To: jhell <jhell@DataIX.net> Cc: Adam Vande More <amvandemore@gmail.com>, freebsd-stable@freebsd.org Subject: Re: top io mode Message-ID: <4CEE90F0.6040701@freebsd.org> In-Reply-To: <4CEE88D9.4070200@DataIX.net> References: <AANLkTikrKevf3x4nyi6=8Yz0BW=yZzf0W_Xa3XGQXy8N@mail.gmail.com> <4CEE88D9.4070200@DataIX.net>
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on 25/11/2010 18:03 jhell said the following: > On 11/25/2010 06:28, Adam Vande More wrote: >> top io doesn't seem to display stats when dealing direct with a block device >> like so: >> >> dd if=/dev/ada0 of=/dev/null >> >> However if dd runs on a regular file eg >> >> dd if=test.file of=/dev/null >> >> then stats are reported in top. >> >> Is this the expected behavior? >> > > Is this on ZFS ? > > If that is the case it is a known problem that needs the following patch > to fix the issue. > > http://people.freebsd.org/~avg/zfs-ru.diff > > I believe it is planned to be MFC'd but am not quite sure so I have CC'd > Andriy and he should be able to advise further. I think that you got confused :-) Read Adam's report again :-) -- Andriy Gapon
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