Messages in this thread | | | Subject | Re: Getting the page size of currently running kernel | From | Roland Dreier <> | Date | Sat, 19 Feb 2005 19:28:27 -0800 |
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Scott> Is there any way to get a running kernel to tell you the Scott> size of its pages? Why: I'm writing a quick Perl hack to Scott> monitor the memory usage of the TCP stack over time. Easy Scott> enough: /proc/net/sockstat gives the current value of Scott> tcp_memory_allocated. But how do I convert this into Scott> bytes? I don't want to hard code PAGE_SIZE into my Perl Scott> script, complete with a lookup table for 4K vs. 8K Scott> architectures! Am I missing something obvious here?
I'm not sure exactly how to call it from perl, but from C one can use sysconf(3) like:
page_size = sysconf(_SC_PAGESIZE);
(one can also use getpagesize(2) to do exactly the same thing)
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