From: "Lever, Charles" <Charles.Lever@netapp.com>
Subject: RE: [PATCH] 1/3 - RPC metrics support
Date: Wed, 31 Mar 2004 08:57:18 -0800
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <482A3FA0050D21419C269D13989C61130435DE34@lavender-fe.eng.netapp.com>
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Cc: "Patrick Mochel" <mochel@digitalimplant.org>, <nfs@lists.sourceforge.net>
To: "Trond Myklebust" <trond.myklebust@fys.uio.no>
Errors-To: nfs-admin@lists.sourceforge.net

> My experience with gettimeofday() was that it slows down and=20
> eventually hangs the machine when you use it inside bottom=20
> halves. That's why I had to revert to using 'jiffies'=20
> instead. While I agree that precision may be important, a=20
> measurement that so impacts on what it is measuring is not=20
> particularly useful either...

using jiffies makes these measurements useless for anything
faster than a millisecond (or 10 milliseconds on current
x86), which is most everything on 100Mb or faster, these
days.  isn't there some other solution?

> Could you also move EXPORT_SYMBOL() definitions to after=20
> their function definition, as per the 2.6.x recommendations.

i would prefer that we did this in a separate patch, and
moved all the symbols at once.


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