Messages in this thread | | | Subject | Re: 2.6.1 slower than 2.4, smp/scsi/sw-raid/reiserfs | From | Philip Martin <> | Date | Thu, 05 Feb 2004 14:27:03 +0000 |
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Nick Piggin <piggin@cyberone.com.au> writes:
> Sorry, I mean what is it that you are timing?
It's a bit of software (Subversion) built using "make -j4". It consists of a little over 200 C files compiled to object code, then linked to about a dozen shared libraries, and finally linked to create over a dozen executables. It uses libtool, so each compile/link involves running a bit of shell code before runing gcc. It lends itself to parallel builds, on 2.4 there is little difference in the build time using -j2, -j4, -j8. The source code is about 16MB and the object/library/executable about 28MB.
>>This is the profile for 2.6.2, it is very much like 2.6.1 >> >>248.07user 118.81system 3:42.00elapsed 165%CPU (0avgtext+0avgdata 0maxresident)k >>0inputs+0outputs (434major+3770493minor)pagefaults 0swaps > > If you get time, could you test the patch I sent you?
Your patch doesn't apply to plain 2.6.2. I got 2.6.2-mm1 and it looks like that already includes your patch, correct? This is what I got for 2.6.2-mm1
247.02user 118.33system 3:51.24elapsed 157%CPU (0avgtext+0avgdata 0maxresident)k 0inputs+0outputs (176major+3771994minor)pagefaults 0swaps
so it's not really an improvement on plain 2.6.2.
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