Messages in this thread |  | | From | "Jeff Busch" <> | Subject | RE: [problem] RH 2.4.7-2 kernel slows to a crawl under heavy i/o | Date | Wed, 22 Aug 2001 22:39:06 -0500 |
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> I have been trying to duplicate a similar problem in my lab that happened > to me on a production box with 2.4.5. do you have a test that will allow > you to replicate the problem at will?
ok here's a reply from our developer:
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probably the best way to reproduce the environment would be to write a C++ class that has a method on it that goes and maps a file, touches all the memory in that file, and then returns. add another method that takes a number and returns that same number. then run that code through swig and write a mod_perl interface to call the first method then call the second method in a loop (10 times should be good), then storable::freeze an array of results and print it to stdout.
this ought to emulate the kinds of things we do there. you might actually have that method take a number and return a string (literal) instead of a number, just to exercise swig a little more.
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Note that the file must be large; maybe 50% greater than physical RAM.
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