Messages in this thread | | | Date | Tue, 3 Dec 2002 21:08:38 -0500 | From | Igor Schein <> | Subject | performance of cache-intensive applications |
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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
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