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Date: Thu, 15 Aug 2002 16:21:26 -0700
From: William Lee Irwin III <wli@holomorphy.com>
To: linux-kernel@vger.kernel.org
Subject: 2.5.31 kmap_atomic copy_*_user benefits
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With and without kmap_atomic() -based copy_*_user() patches from akpm.
Taken on a 16x/16GB box.

Take 1: total throughput:


before:
Throughput 32.3019 MB/sec (NB=40.3774 MB/sec  323.019 MBit/sec)  512 procs

after:
Throughput 46.9837 MB/sec (NB=58.7296 MB/sec  469.837 MBit/sec)  512 procs

In the follow-ups I'll include oprofile numbers for each and vmstat logs.


Cheers,
Bill
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