Hi Nick, I have collected performance numbers for the lock less page cache patch on the AIM - IO test. The performance numbers are collected for 1-100 tasks 1-50 tasks and 90-100 tasks both for with and without your patch. This was done on 2.6.13 kernel. There's definite improvement when the tasks are small i.e ~50-70. But when the tasks go beyond 80, we see a large performance dip. I again profiled the 90-100 runs with spinlock's inlined, but couldn't understand the reason behind the performance difference. Please find attached the performance numbers as well as the oprofile logs. Thanks & Regards, Alok On 9/2/05, Nick Piggin <[email protected]> wrote: > Nick Piggin wrote: > > > I think this is getting pretty stable. No guarantees of course, > > but it would be great if anyone gave it a test. > > > > Or review, I might add. While I understand such a review is > still quite difficult, this code really is far less complex > than the previous lockless pagecache patches. > > (Ignore 1/7 though, which is a rollup - a broken out patchset > can be provided on request) > > Nick > > -- > SUSE Labs, Novell Inc. > > Send instant messages to your online friends http://au.messenger.yahoo.com > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- A computer scientist is someone who, when told to "Go to Hell," sees the "go to," rather than the destination, as harmful. Alok Kataria
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