Messages in this thread | | | Subject | Re: [BENCHMARK] gcc3.2 v 2.95.3 (contest and linux-2.5.38) | From | Robert Love <> | Date | 22 Sep 2002 23:10:30 -0400 |
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On Sun, 2002-09-22 at 23:04, Con Kolivas wrote:
> IO Full Load: > Kernel Time CPU > 2.5.38 170.21 42% > 2.5.38-gcc32 1405.25 8%
Ugh?? Something is _seriously_ messed up here.
The CPU utilization is only 8% but the time is nearly 10x worse. You sure the only difference was the compiler? I could think gcc-3.2 makes some poorer choices wrt code optimization, but nothing feasible can come to mind that would produce such terrible results.
Also, I believe RedHat is compiling their kernel in 8.0 with gcc-3.2, unless they reintroduced kgcc. Surely that are not seeing these abysmal numbers.
Robert Love
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