Re: [PATCH] 2.5.46 add original copy_ro/from_user for i386 and support PenPro PenII

From: Akira Tsukamoto (akira-t@suna-asobi.com)
Date: Tue Nov 05 2002 - 09:52:00 EST

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.
>
> Athlon is ignored in the current kernel from 2.5.45 but you could use
> CONFIG_M686 to try new copy_user.

For arhlon, to try the new copy_user,
I run the Taka's socket benchmark program between CONFIG_M686 and K7.
http://www.suna-asobi.com/~akira-t/linux/netio-bench/netio2.c

CONFIG_MK7
(off:100, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.117 seconds at 342.9 Mbytes/sec
(off:104, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.114 seconds at 350.1 Mbytes/sec
(off:108, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.115 seconds at 347.9 Mbytes/sec
(off:112, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.113 seconds at 354.8 Mbytes/sec
(off:116, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.112 seconds at 358.1 Mbytes/sec
(off:120, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.113 seconds at 354.2 Mbytes/sec

CONFIG_M686
(off:100, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.090 seconds at 445.1 Mbytes/sec
(off:104, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.090 seconds at 442.4 Mbytes/sec
(off:108, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.089 seconds at 447.2 Mbytes/sec
(off:112, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.091 seconds at 438.7 Mbytes/sec
(off:116, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.091 seconds at 440.7 Mbytes/sec
(off:120, size:0x800000)
send/recv: copied 40.0 Mbytes in 0.090 seconds at 442.7 Mbytes/sec

It looks like improving, but it could be X86_L1_CACHE_SHIFT 6/5
problem that I post it previously. 

-- 
Akira Tsukamoto <akira-t@suna-asobi.com, at541@columbia.edu>

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This archive was generated by hypermail 2b29 : Thu Nov 07 2002 - 22:00:38 EST