RE: Filesystem Block Size ? 1K or 4K or 8K ?
Date: Tue, 14 Oct 2008 16:58:02 +0530
Anybody worked with Direct I/O? Does it really help performance? ... My Distant (was long ago) past experience of using Direct I/O with 8K F.S. Block size on Solaris 8 resulted in Poor performance. Optionally should we insist on F.S. Block Size of 8K (NOT 1K) Without Direct I/O?
Sent: Tuesday, October 14, 2008 4:38 PM
HP who is partnering the Benchmark states - since Filesystems are being Mounted with Direct I/O therefore 1K F.S. block size is preferred to 8K.
From: zhuchao_at_gmail.com [mailto:zhuchao_at_gmail.com] Of course set to 8k
Date: Tue, 14 Oct 2008 15:53:52 +0530
We are in the process of Setting up DB Server for an OLTP Banking Application Benchchmark.
system device block size(think this is the O.S. block size) = 1K Base page size = 4K.
DB_block_size = 8K
Should the Filesystem (VXFS) Block Size be set to 1K, 4K or 8K? ... Personally I think it should be 4 K (i.e. Equal to the Page-size)
Cheers & Thanks V much
P.S. Will provide any data needed
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