[CentOS] Filesystem for Maildir

[Christopher Chan]

> Here they are: The reader/writer times are in milliseconds and they are 
> the amount of time needed to read/write one message.
> 
> jfs filesystem results:
>                         Reader time     Writer time     Deliveries per 
> second
> No. of writers: one     0.058           6.339           157.754
> No. of writers: two     0.102           19.12           104.603
> No. of writers: four    0.636           122.947         32.5343
> No. of writers: eight   1.782           867.593         9.22091
> No. of writers: sixteen 6.744           2917.31          5.4845
> 
> reiser filesystem results:
>                         Reader time     Writer time     Deliveries per 
> second
> No. of writers: one     0.154           20.829          48.01
> No. of writers: two     0.223           63.141          31.6751
> No. of writers: four    0.373           173.847         23.0087
> No. of writers: eight   0.576           945.43          8.46176
> No. of writers: sixteen 0.795           3812.84          4.19635
> 
> ext3o+htree filesystem results:
>                         Reader time     Writer time     Deliveries per 
> second
> No. of writers: one     0.059           16.149          61.9233
> No. of writers: two     0.087           87.719          22.8001
> No. of writers: four    0.255           237.293         16.8568
> No. of writers: eight   0.536           1184.24         6.75538
> No. of writers: sixteen 0.753           4296.05          3.72435
> 
> ext3w+htree filesystem results:
>                         Reader time     Writer time     Deliveries per 
> second
> No. of writers: one     0.059           14.538          68.7853
> No. of writers: two     0.088           61.856          32.3332
> No. of writers: four    0.364           208.894         19.1485
> No. of writers: eight   0.815           1142.34         7.00315
> No. of writers: sixteen 1.692           4385.77          3.64816
> 
> xfs filesystem results:
>                         Reader time     Writer time     Deliveries per 
> second
> No. of writers: one     0.04            4.662           214.5
> No. of writers: two     0.046           9.818           203.707
> No. of writers: four    0.103           38.783          103.138
> No. of writers: eight   0.277           301.13          26.5666
> No. of writers: sixteen 2.038           1716.02          9.32388
> 

ext3j+htree:
                         Reader time     Writer time     Deliveries per 
second
No. of writers: one     0.071           18.093          55.27
No. of writers: two     0.115           79.087          25.2886
No. of writers: four    0.413           276.66          14.4582
No. of writers: eight   0.924           1592.82         5.02255
No. of writers: sixteen 1.56            6439.78          2.48456