Messages in this thread | | | Date | Thu, 26 Aug 2004 02:59:04 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] kallsyms data size reduction / lookup speedup |
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viro@parcelfarce.linux.theplanet.co.uk wrote: > > On Thu, Aug 26, 2004 at 12:40:30AM +0100, Paulo Marques wrote: > > That is why I kept a big *If* in that sentence. I'm quite new to all > > this, and I'm still reading a lot of source code. > > > > If the culprit is in fact seq_file, and seq_file can be improved in a > > way that works for everyone (not only kallsyms), then I also agree > > that is is the way to go. But hunting this down might prove that the > > problem is somewhere else. It is just too soon to draw conclusions. > > readprofile(1) ought to narrow it down with that kind of timing difference...
c014696c do_anonymous_page 4 0.0133 c0133550 kallsyms_expand_symbol 17 0.1545 c026b78f __copy_user_intel 31 0.2039 c026a5ec vsnprintf 39 0.0283 c026a318 number 40 0.0552 c011d102 write_profile 79 0.7182 c0131f39 is_exported 3805 17.0628 c0104028 default_idle 4254 86.8163 00000000 total 8325 0.0025
It's all in the O(n) is_exported(). Rusty's fault ;) - 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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