From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: raju@linux-delhi.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: Query on kernel metrics available
Date: Mon, 19 Nov 2007 12:29:36 +0000 [thread overview]
Message-ID: <20071119122936.6e209a18@the-village.bc.nu> (raw)
In-Reply-To: <200711191259.26502.raju@linux-delhi.org>
On Mon, 19 Nov 2007 12:59:26 +0530
Raj Mathur <raju@linux-delhi.org> wrote:
> A competing OS vendor is claiming that the Linux kernel has no way to
> measure the following:
>
> a. Time spent waiting for page faults in percent
>
> b. Total transfer time for each auxiliary memory in percent
>
> c. Time in percent when one or more tasks were blocked waiting for
> memory resources
>
> d. Time spent waiting for page faults in percent
a an d appear to be the same thing
> I was wondering if the claims were pure FUD or are measurements
> possible -- whether they are actually implemented or not is not
> important (at least at this stage). Apologies if the descriptions
> aren't very precise; OTOH that leaves us room to interpret the claims
> in a favourable (to us) manner :)
Systemtap as shipped by most of the enterprise vendors can measure all of
this quite easily.
Alan
prev parent reply other threads:[~2007-11-19 12:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-19 7:29 Raj Mathur
2007-11-19 12:29 ` Alan Cox [this message]
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