Timing comparisons for multi-kprobe feature

Ananth N Mavinakayanahalli amavin@redhat.com
Mon Apr 18 17:29:00 GMT 2005


Hi,

Here is the result of the tests I carried out to determine the cost
of the multiple-kprobes feature. All tests were carried out on a
uni PIII running at 732MHz.

I used Will's timing_kprobe and kprobe_multi modules on linux-2.6.12-rc2
for the tests.

(All values in microseconds)

		Vanilla		Single		Multiple
		(2.6.12-rc2)	Interface	Interfaces
------------------------------------------------------------
kprobe		1.124		1.149		1.149
jprobe		1.891		1.885		1.885
kprobe_multi	NA		1.306		1.387

Note:
- Single Interface => linux-2.6.12-rc2 + take3 patch
- Multiple Interfaces => linux-2.6.12-rc2 + take4 patch
- kprobe_multi => averaged values with Will's kprobe_multi testcase

Thanks,
Ananth



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