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Re: [Bug kprobes/2062] Return probes does not scale well on SMP box
- From: "Frank Ch. Eigler" <fche at redhat dot com>
- To: systemtap at sources dot redhat dot com
- Date: Tue, 18 Apr 2006 19:54:15 -0400
- Subject: Re: [Bug kprobes/2062] Return probes does not scale well on SMP box
- References: <20051216010933.2062.anil.s.keshavamurthy@intel.com> <20060418234829.24893.qmail@sourceware.org>
Hi -
> > [...] I suppose we could avoid preallocating the kretprobe
> > instances at all, and > just allocate them as needed from
> > GFP_ATOMIC space. :-}
> This could be other alternative, we can try this one too.
What rate of kretprobe firing could a system possibly sustain,
while keeping the GFP_ATOMIC memory pool from running empty?
- FChE