Re: Filesystem Block Size ? 1K or 4K or 8K ?
Date: Tue, 14 Oct 2008 11:35:40 +0000
If direct io is being used, the difference maybe less. Anyway I don't see any benefit using 1k/4k blocksize. If you want best throughput, go with raw volumes. Have done all tuning on hp kaio setup to maximize os capability? Sent via BlackBerry by AT&T
From: VIVEK_SHARMA <VIVEK_SHARMA_at_infosys.com>
Date: Tue, 14 Oct 2008 16:38:03
To: zhuchao_at_gmail.com<zhuchao_at_gmail.com>; ORACLE-L<oracle-l_at_freelists.org> Subject: RE: Filesystem Block Size ? 1K or 4K or 8K ?
Thanks V much Zhu
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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