Messages in this thread | | | Subject | Re: Strange IDE performance change in 2.6.1-rc1 (again) | From | Valdis.Kletnieks@vt ... | Date | Fri, 02 Jan 2004 16:27:00 -0500 |
| |
On Fri, 02 Jan 2004 22:04:27 +0100, Paolo Ornati said:
> The results are like the previous. > > 2.6.0: > 64 31.91 > 128 31.89 > 256 26.22 # during the transfer HD LED blinks > 8192 26.26 # during the transfer HD LED blinks > > 2.6.1-rc1: > 64 25.84 # during the transfer HD LED blinks > 128 25.85 # during the transfer HD LED blinks > 256 25.90 # during the transfer HD LED blinks > 8192 26.42 # during the transfer HD LED blinks > > I have tried with and without "nice -n '-20'" but without any visible changes
Do you get different numbers if you boot with:
elevator=as elevator=deadline elevator=cfq (for -mm kernels) elevator=noop
(You may need to build a kernel with these configured - the symbols are:
CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y (-mm kernels only)
and can be selected in the 'General Setup' menu - they should all be built by default unless you've selected EMBEDDED). [unhandled content-type:application/pgp-signature] | |