Messages in this thread |  | | From | Steven Cole <> | Date | Tue, 12 Dec 2000 11:18:26 -0700 | Subject | Re: UP 2.2.18 makes kernels 3% faster than UP 2.4.0-test12 |
| |
On Monday 11 December 2000 11:46, Alan Cox wrote: > > Its an interesting demo that 2.4 has some performance problems since 2.2 > is slower than 2.0 although nowdays not much.
Results for SMP 2.2.18 vs SMP 2.4.0-test12 are in. I repeated my earlier tests on a much faster dual P-III machine.
Executive summary: SMP 2.4.0 is 2% faster than SMP 2.2.18.
Although I made the following changes in the test procedure, these tests for 2.2.18 and 2.4.0-test12 were held under identical conditions.
I used make -j3 bzImage for these tests on this SMP machine. The test machine is a dual P-III (733 Mhz), 256MB, IDE.
I ran X and KDE 2.0 during the tests to provide a greater though reproducable load on the tested kernel.
The 2.2.18 kernel used was the final 2.2.18.
The 2.4.0-test12 is still 2.4.0-test12-pre7 since test12(final) does not yet build with reiserfs. Team Reiser is working on this.
Here are the numbers I got. Again, three runs each were done. Task: make -j3 bzImage for 2.4.0-test12-pre7 kernel tree. Numbers are seconds to build.
1 2 3 ave. 143 143 143 143 Running 2.2.18 SMP 140 140 140 140 Running 2.4.0-test12-pre7 SMP
The numbers are very repeatable, as you can see.
This time, 2.4.0-test12 wins by 2%. Recounts can be performed by anyone, anytime.
Steven - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |