Messages in this thread | | | Date | Thu, 07 Aug 2003 02:55:45 +0100 | From | RaTao <> | Subject | Re: linux-2.6.0-test2-mm4 O_DIRECT |
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Hi Andrew, Daniel!
Just recompiled test2-mm4 and I tested it with:
time iozone -f hello.data -i 0 -s 50000 -r 1 -I
(-I enables O_DIRECT, I straced it and fopen has O_DIRECT flag)
and everything works great! My app is working too!! I can't understand it but everything is fine, now.
I'm sorry for wasting your time :(
Thanks, Ratao
Daniel McNeil wrote: > O_DIRECT also works for me on ext3 using regular write and async i/o > using 512-byte i/o. > > Is your buffer alignment correct? > O_DIRECT requires a 512-byte aligned buffer. > > Daniel > On Wed, 2003-08-06 at 14:32, RaTao wrote: > >>Hi! >> >>I've correct my (don't know how) misspelled subject :) >> >>Andrew Morton wrote: >> >>[..snip..] >> >>> >>>It works OK here. >>> >>> >>> >>>>- vmstat doesn't show bi/bo for O_DIRECT's disk access. >>> >>> >>>It does here. >>> >> >>Maybe goofed somewhere. I can't test it again today, I'll do it tomorrow. >> >> >> >>>I'd be suspecting your test app: is it checking the return value of all >>>syscalls? >> >>I'll double check. >>Thanks, >> >>Ratao >> >> >> >>- >>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/ > > > - > 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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