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Benchmarking DMA


From: Sergio López
Subject: Benchmarking DMA
Date: Thu, 07 Oct 2004 03:35:02 +0200

By AMS request, here is a bonnie benchmark between gnumach with and
without DMA. Putchar test has been disabled to make it faster (even
without this, it takes more than 2 hours each one).

Testing machine relevant specs:
        AMD Athlon 700Mhz
        SD-RAM 256M 133Mhz
        IDE Controller VIA VT82C686


GNUMach *WITHOUT* DMA:

     ------Sequential Output------ --Sequential Input- --Random-
     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
 Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
 512M             566   0   146  26             206  36  67.1  11
     ------Sequential Create------ --------Random Create--------
     -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
   16   164   1  2045  16   254   0   168   1   133   0    38   0


GNUMach *WITH* DMA:

     ------Sequential Output------ --Sequential Input- --Random-
     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
 Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  /sec %CP
 512M             599   0   151  26             211  37  68.3  12
     ------Sequential Create------ --------Random Create--------
     -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
   16   230   2  2170  16   480   2   238   2   143   1    40   0


-- 
Sergio López "k0ro"
address@hidden

Bee GNU/Hurd: Spanish GNU/Hurd "pkgsrc" powered distro.
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