Messages in this thread | | | From | David Mosberger <> | Date | Tue, 16 Apr 2002 17:49:47 -0700 | Subject | Re: Why HZ on i386 is 100 ? |
| |
>>>>> On Tue, 16 Apr 2002 10:18:18 -0700 (PDT), Davide Libenzi <davidel@xmailserver.org> said:
Davide> i still have pieces of paper on my desk about tests done on Davide> my dual piii where by hacking HZ to 1000 the kernel build Davide> time went from an average of 2min:30sec to an average Davide> 2min:43sec. that is pretty close to 10%
The last time I measured timer tick overhead on ia64 it was well below 1% of overhead. I don't really like using kernel builds as a benchmark, because there are far too many variables for the results to have any long-term or cross-platform value. But since it's popular, I did measure it quickly on a relatively slow (old) Itanium box: with 100Hz, the kernel compile was about 0.6% faster than with 1024Hz (2.4.18 UP kernel).
--david - 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/
| |