On Tue, 05 Nov 2002 09:36:48 -0500
Akira Tsukamoto <at541@columbia.edu> mentioned:
>
> This is revised version from my previous patch, adding original copy_user.
>
> In addition, I changed one line in Kconfig, remove M585MMX and add M686
> because I run new copy-user on my PentiumMMX but had no improvement,
> however PenII/PenPro likely to have improvement from new copy_user function.
I gathered benchmark results for PentiumMMX.
They confirm that my patch improves the speed.
I run the Taka's socket benchmark program on PentiumMMX with CONFIG-M586MMX.
http://www.suna-asobi.com/~akira-t/linux/cleanup-copy-user-1/netio586mmx.c
Without my patch on 2.5.46:
(off:0, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.381 seconds at 13.1 Mbytes/sec
(off:1, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.488 seconds at 10.2 Mbytes/sec
(off:2, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.493 seconds at 10.1 Mbytes/sec
(off:3, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.489 seconds at 10.2 Mbytes/sec
(off:4, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.381 seconds at 13.1 Mbytes/sec
(Entire log is here,
http://www.suna-asobi.com/~akira-t/linux/cleanup-copy-user-1/586MMX-PenMMX-no-patch.log)
With my patch on 2.5.46:
(off:0, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.380 seconds at 13.2 Mbytes/sec
(off:1, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.385 seconds at 13.0 Mbytes/sec
(off:2, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.385 seconds at 13.0 Mbytes/sec
(off:3, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.384 seconds at 13.0 Mbytes/sec
(off:4, size:0x100000)
send/recv: copied 5.0 Mbytes in 0.381 seconds at 13.1 Mbytes/sec
(Entire log is here,
http://www.suna-asobi.com/~akira-t/linux/cleanup-copy-user-1/586MMX-PenMMX-with-patch.log)
I appreciate if somebody could try on 386 or 486.
I don't have them right now.
Cheers,
Akira
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This archive was generated by hypermail 2b29 : Thu Nov 07 2002 - 22:00:48 EST