Our measurement problem

Our measurement problem

Posted Aug 6, 2005 14:00 UTC (Sat) by sandmann (subscriber, #473)
In reply to: Our measurement problem by Yorick
Parent article: Our bloat problem

The kernel actually has a system call - mincore - that tells you which pages of a mapped file are in memory. I wrote a small program a long time ago that uses it to print more details about memory usage:

http://www.daimi.au.dk/~sandmann/freon.c

You have to be root to run it.

Unfortunately a similar thing can't be done for malloc()d memory because mincore doesn't work for anonymous pages.

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