Messages in this thread | | | From | Christoph Rohland <> | Subject | Re: clarification about redhat and vm | Date | Sat, 19 Jan 2002 11:50:59 +0100 |
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Hi Andrea,
On Fri, 18 Jan 2002, Andrea Arcangeli wrote: > and I assume you were using either ext2 or reiserfs anyways, so the > fsync problem never affected you since the first place (also with > older kernels) I believe.
It was done on ext2 _and_ against raw devices. Same dendency on both setups.
Further on I doubt the test is very depended on fsync. It should be swap io limited since it runs with a way too small memory configuration.
If you have enough memory the test is not very IO intensive either despite the fact that a big database is running. To bring the database really into IO you have to add application servers. (Fujitsu Siemens took 160 4way Linux servers to saturate a database server running Solaris on 64way FSC Primepower.)
BTW since we are just bashing VMs: I always hear that 2.2 is so much better: The first 2.2 kernel which could really survive this test was 2.2.19!
Greetings Christoph
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