Messages in this thread | | | Date | Mon, 8 Mar 2004 11:16:39 -0800 (PST) | From | markw@osdl ... | Subject | lvm2 performance data with linux-2.6 |
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I've started collecting various data (including oprofile) using our DBT-2 (OLTP) workload with lvm2 on linux 2.6.2 and 2.6.3 on ia32 and ia64 platforms: http://developer.osdl.org/markw/lvm2/
So far I've only varied the stripe width with lvm, from 8 KB to 512 KB, for PostgreSQL that is using 8 KB sized blocks with ext2. It appears that a stripe width of 16 KB through 128KB on the ia64 system gives the best throughput for the DBT-2 workload on a volume that should be doing mostly sequential writes.
I'm going to run through more tests varying the block size that PostgreSQL uses, but I wanted to share what I had so far in case there were other suggestions or recommendations.
-- Mark Wong - - markw@osdl.org Open Source Development Lab Inc - A non-profit corporation 12725 SW Millikan Way - Suite 400 - Beaverton, OR 97005 (503) 626-2455 x 32 (office) (503) 626-2436 (fax) http://developer.osdl.org/markw/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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