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