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RE: kprobes performance on i386 vs x86_64

From: "Keshavamurthy, Anil S" <anil dot s dot keshavamurthy at intel dot com>
To: "Martin Hunt" <hunt at redhat dot com>, <systemtap at sources dot redhat dot com>
Date: Mon, 22 Jan 2007 14:06:38 -0800
Subject: RE: kprobes performance on i386 vs x86_64

Possible. Can you rerun the same tests again with some dummy
post-kprobe-handler as djprobes will not come into effect if you have
post-kprobe-handler.


Thanks,

-Anil Keshavamurthy
Open Source Technology Center/SSG
Intel Corp.
(w) 503-712-4476
email: anil.s.keshavamurthy@intel.com

-----Original Message-----
From: systemtap-owner@sourceware.org
[mailto:systemtap-owner@sourceware.org] On Behalf Of Martin Hunt
Sent: Monday, January 22, 2007 11:56 AM
To: systemtap@sources.redhat.com
Subject: kprobes performance on i386 vs x86_64

Is there a reason why i386 kprobes are 2-3 times faster than x86_64 on
2.6.19? This is on the same hardware. Is djprobes only working on i386
or something?

Martin

Follow-Ups:
- Re: kprobes performance on i386 vs x86_64
  - From: Masami Hiramatsu

References:
- kprobes performance on i386 vs x86_64
  - From: Martin Hunt

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