Date: Wed, 5 Feb 2014 15:13:57 -0500 (EST) From: Garrett Wollman <wollman@hergotha.csail.mit.edu> To: scott4long@yahoo.com Cc: freebsd-net@freebsd.org Subject: Re: ixgbe/NFS m_defrag() instrumentation Message-ID: <201402052013.s15KDvha014110@hergotha.csail.mit.edu> In-Reply-To: <E6B5E96C-A579-4187-B2FB-61B6B5E90D7F@yahoo.com> References: <21233.52147.912022.488615@hergotha.csail.mit.edu>
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In article <E6B5E96C-A579-4187-B2FB-61B6B5E90D7F@yahoo.com>, Scott
Long writes:
>dtrace to the rescue?
>
>#!/usr/sbin/dtrace -s
>fbt::m_defrag:entry
>{
> @ = count();
>}
I don't know where else m_defrag() might be called from, so I would be
more inclined to make that
@[stack()] = count();
if I were going the dtrace route.
-GAWollman
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