Messages in this thread | | | From | "Nakajima, Jun" <> | Subject | RE: performance of cache-intensive applications | Date | Tue, 3 Dec 2002 18:17:52 -0800 |
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This kind of problem could be solved by cache coloring. There should be some patch available for Linux. I don't know if the other OSes you tried implement cache coloring, though.
Jun
> -----Original Message----- > From: Igor Schein [mailto:igor@txc.com] > Sent: Tuesday, December 03, 2002 6:09 PM > To: linux-kernel@vger.kernel.org > Subject: performance of cache-intensive applications > > Hi, > > I am using an open-source application on ix86 to perform a task which > is cache-intensive. When I run consecutive iterations of the task on > a fixed input, the variance in timing of each iteration is extemely > high. Needless to say, the test machine is always non-occupied. > > On every other OS I tried, Solaris, HPUX, FreeBSD and Tru64, the > timing is very consistent between the iterations. My question is, are > there known issues with L2 cache reuse in Linux kernel? > > I can provide any necessary information for anyone interested in > addressing this issue, but I purposely skipped most technical details > in this post to keep it simple. > > Thanks in advance. > > Igor > > - > 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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