Messages in this thread | | | Date | Mon, 24 May 1999 16:27:54 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: [patch] releasing kernel lock during copy_from/to_user |
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On Mon, 24 May 1999, Manfred Spraul wrote:
>1) serving 1 131 byte file over the network.
I think that checking the size of the copy-user before release the lock should fix the 131 testcase.
>3) serving 1 100 kB file (client & server on the same computer) - 2.2.9: >300.000 kernel-lock's > no clear max, one weak max at 2048 >- andrea: 1.5 million. > max at ~ 400 ticks >andrea was ~ 20% faster (2.2.9: 28 MByte/s transfer, andrea: 35)
Good.
Thanks.
Andrea Arcangeli
PS. Comparing 2.2.9 and 2.3.3_andrea4 is not fair though since there are too much unrelated changes. I think I'll send you a patch to try out the unlocking code alone.
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