Re: bad lmbench numbers for mmap

Alan Cox (alan@lxorguk.ukuu.org.uk)
Fri, 16 Apr 1999 22:15:35 +0100 (BST)

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> --------- ------------- ------ ------ ------ ------ ------- ----- -----
> sparc64-l Linux 2.2.2 24 4 54 13 36488 4 1.9K
>
> --------- ------------- ------ ------ ------ ------ ------- ----- -----
> sparc-sun SunOS 5.6 480 598 4761 245 4912 21 15.6K
>
> and this on a P-II 450 running 2.2.5
> --------- ------------- ------ ------ ------ ------ ------- ----- -----
> i686-linu Linux 2.2.5 15 1 27 2 11674 1 0.7K
>
> so what's up with mmap ?

Redo the benchmark modified to use the mmaped object each iteration. Compare.
Ponder if one OS is delaying mmap setup

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