ru.unix.bsd

 
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 From : Ivan Baidakou                        2:450/143.666  28 Sep 2002  12:04:32
 To : All
 Subject : async versus softupdates
 -------------------------------------------------------------------------------- 
 

 acyncVSsoftupdates{
 /usr#rm -rf /grave/ports/
 /usr#umount /grave/
 /usr#tunefs -n disable /dev/ad0s6
 tunefs: soft updates cleared
 /usr#mount -o async /dev/ad0s6 /grave/
 /usr#time cp -R ports /grave/
 3.806u 93.848s 8:15.15 19.7%    60+343k 15786+1799io 64984pf+0w
 /usr#time rm -rf /grave/ports
 2.580u 25.025s 0:51.55 53.5%    156+308k 13619+538io 4pf+0w
 /usr#tunefs -n enable /dev/ad0s6
 tunefs: soft updates set
 /usr#mount /dev/ad0s6 /grave/
 /usr#time cp -R ports /grave/
 4.056u 99.678s 13:38.61 12.6%   60+338k 15956+1796io 64983pf+0w
 
 /usr#du -sh ports
 446M    ports
 /usr#tunefs -p /dev/ad0s6
 tunefs: soft updates:  (-n)                                enabled
 tunefs: maximum contiguous block count: (-a)               7
 tunefs: rotational delay between contiguous blocks: (-d)   0 ms
 tunefs: maximum blocks per file in a cylinder group: (-e)  4096
 tunefs: average file size: (-f)                            16384
 tunefs: average number of files in a directory: (-s)       64
 tunefs: minimum percentage of free space: (-m)             8%
 tunefs: optimization preference: (-o)                      time
 }acyncVSsoftupdates
 
 ... Writing about music is like dancing about architecture. (c) Frank Zappa
 --- GoldED+/BSD 1.1.5
  * Origin: be Free or be Dead. (2:450/143.666)
 
 

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