[CentOS] Re: Filesystem for Maildir

Mon Nov 26 20:44:20 UTC 2007
Scott Silva <ssilva at sgvwater.com>

on 11/26/2007 11:22 AM Heitor Augusto M Cardozo spake the following:
> Hi all,
> 
> In last year, i had made some research and benchmarks based on CentOS 4 
> to know which filesystem is better for Maildir:  ReiserFS, XFS or EXT3.
> 
> My conclusion was as follows:
> 
> - EXT3: reliable but very slow to read many small files.
> - ReiserFS: best performance but unreliable and bad recovery tools.
> - XFS: My choice, good performance and reliability.
> 
> On CentOS 5.0, a had the same benchmarks and now, EXT3 and XFS seems to 
> had better or equivalent performance on Read and Create Random files. 
> One of this tests, using bonnie++, show this:
> 
> # bonnie++ -d /mnt/sdc1/testfile -s 8192 -m `hostname` -n 
> 50:150000:5000:1000
> 
> XFS:
> Version  1.03       ------Sequential Output------ --Sequential Input- 
> --Random-
>                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- 
> --Seeks--
> Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  
> /sec %CP
> localhost         8G 74048  99 201584  32 74014  12 61610  92 228977  18 
> 623.5   0
>                     ------Sequential Create------ --------Random 
> Create--------
>                     -Create-- --Read--- -Delete-- -Create-- --Read--- 
> -Delete--
> files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  
> /sec %CP
> 50:158999:5125/1000   692  12    82   0  3502  28   529   7   107   0  
> 1149  11
> localhost,8G,74048,99,201584,32,74014,12,61610,92,228977,18,623.5,0,50:158999:5125/1000,692,12,82,0,3502,28,529,7,107,0,1149,11
> 
> EXT3:
> Version  1.03       ------Sequential Output------ --Sequential Input- 
> --Random-
>                     -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- 
> --Seeks--
> Machine        Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP  
> /sec %CP
> localhost         8G 54569  99 249788  68 75268  11 59128  91 211926  15 
> 587.2   0
>                     ------Sequential Create------ --------Random 
> Create--------
>                     -Create-- --Read--- -Delete-- -Create-- --Read--- 
> -Delete--
> files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  
> /sec %CP
> 50:158999:5125/1000   748  15   256   1  1081   5   713  15   108   0   
> 207   1
> localhost,8G,54569,99,249788,68,75268,11,59128,91,211926,15,587.2,0,50:158999:5125/1000,748,15,256,1,1081,5,713,15,108,0,207,1
> 
> 
> What i want to know is: Anyone use or recommend EXT3 for Maildir?
> 
> My configuration: 3Ware 9650SE-8LPML, 8 drives SATA2  ST3500630AS 500GB 
> on RAID 10.
> 
Ext3 is pretty good if directory indexes are on.;
See http://wiki.archlinux.org/index.php/Ext3_Filesystem_Tips


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