From: "roland" <devzero@web.de>
To: "Fengguang Wu" <fengguang.wu@gmail.com>
Cc: <linux-kernel@vger.kernel.org>, <lserinol@gmail.com>, <akpm@osdl.org>
Subject: Re: I/O statistics per process
Date: Wed, 27 Sep 2006 23:22:02 +0200 [thread overview]
Message-ID: <008f01c6e27a$f9bd5460$962e8d52@aldipc> (raw)
In-Reply-To: 359067036.19509@ustc.edu.cn
thanks. tried to contact redflag, but they don`t answer. maybe support is
being on holiday.... !?
linux kernel hackers - there is really no standard way to watch i/o metrics
(bytes read/written) at process level?
it`s extremly hard for the admin to track down, what process is hogging the
disk - especially if there is more than one task consuming cpu.
meanwhile i found blktrace and read into the documenation. looks really cool
and seems to be very powerful tool - but it it`s seems a little bit
"oversized" and not the right tool for this. seems to be for
tracing/debugging/analysis
what about http://lkml.org/lkml/2005/9/12/89 "with following patch,
userspace processes/utilities will be able to access per process I/O
statistics. for example, top like utilites can use this information" which
has been posted to lkml one year ago ? any update on this ?
roland
----- Original Message -----
From: "Fengguang Wu" <fengguang.wu@gmail.com>
To: "roland" <devzero@web.de>
Cc: <linux-kernel@vger.kernel.org>
Sent: Sunday, September 24, 2006 5:04 AM
Subject: Re: I/O statistics per process
> On Fri, Sep 22, 2006 at 09:12:05PM +0200, roland wrote:
>> is there a modified top/ps with i/o column, or is there yet missing
>> something at the kernel level for getting that counters from ?
>
> Red Flag(http://www.redflag-linux.com/eindex.html) has developed an
> iotop based on kprobes/systemtap. You can contact them if necessary.
next prev parent reply other threads:[~2006-09-27 21:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-22 19:12 I/O statistics per process roland
[not found] ` <20060924030415.GA11861@mail.ustc.edu.cn>
2006-09-24 3:04 ` Fengguang Wu
2006-09-27 21:22 ` roland [this message]
2006-09-27 22:55 ` Andrew Morton
2006-09-28 18:55 ` Jay Lan
2006-09-28 19:09 ` Andrew Morton
2006-09-28 20:05 ` roland
2006-09-28 22:00 ` Jay Lan
2006-09-28 22:14 ` Andrew Morton
2006-12-08 0:09 ` roland
[not found] ` <20061208012212.GA5796@mail.ustc.edu.cn>
2006-12-08 1:22 ` Fengguang Wu
2006-12-08 8:55 ` roland
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