Messages in this thread | | | Date | Thu, 13 Jul 2006 19:32:07 +0300 | From | "Raz Ben-Jehuda(caro)" <> | Subject | Re: io_submit() taking a long time to return ? |
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Zach !!! what do u means by "sync block mapping " ?
thank u raz
On 7/13/06, Zach Brown <zach.brown@oracle.com> wrote: > > By reading the aio documentation, we expected the io_submit call to > > always return immediately, > > Sadly, that isn't guaranteed. > > > but in our preliminary tests we noticed that > > sometimes this call can take a long time (more than 10 ms, even > > sometimes more than 30 ms !!). > > If I had to guess I'd suspect that these delays are due to sync block > mapping lookups in the submit path. Do these tend to show up the first > time you read a file? > > - z > > -- > To unsubscribe, send a message with 'unsubscribe linux-aio' in > the body to majordomo@kvack.org. For more info on Linux AIO, > see: http://www.kvack.org/aio/ > Don't email: <a href=mailto:"aart@kvack.org">aart@kvack.org</a> >
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