Messages in this thread | | | Date | Tue, 3 Feb 2009 14:32:51 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] tracer for sys_open() - sreadahead |
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* Pavel Machek <pavel@suse.cz> wrote:
> On Tue 2009-01-27 12:08:04, Kok, Auke wrote: > > > > This tracer monitors regular file open() syscalls. This is a fast > > and low-overhead alternative to strace, and does not allow or > > require to be attached to every process. > > > > The tracer only logs succesfull calls, as those are the only ones we > > are currently interested in, and we can determine the absolute path > > of these files as we log. > > Maybe fanotify() should be used instead? > > Or maybe just plain strace? One slow boot should not really hurt...
ptrace is out of question for good tracing because it's not a transparent probe. (ptrace monopolizes the traced task - if we use that then we break regular strace usage.)
Ingo
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