Messages in this thread | | | Date | Mon, 18 Jan 2010 14:51:06 +0200 | Subject | Re: [RFC] [PATCH 1/7] User Space Breakpoint Assistance Layer (UBP) | From | Pekka Enberg <> |
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On Mon, Jan 18, 2010 at 2:44 PM, Srikar Dronamraju <srikar@linux.vnet.ibm.com> wrote: > * Avi Kivity <avi@redhat.com> [2010-01-18 14:17:10]: > >> On 01/18/2010 02:13 PM, Pekka Enberg wrote: >> >So how big chunks of the address space are we talking here for uprobes? >> >> That's for the authors to answer, but at a guess, 32 bytes per probe >> (largest x86 instruction is 15 bytes), so 32 MB will give you a >> million probes. That's a piece of cake for x86-64, probably harder >> to justify for i386. > > On x86, each probe takes 16 bytes.
And how many probes do we expected to be live at the same time in real-world scenarios? I guess Avi's "one million" is more than enough? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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