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Page Statistics |
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=============== |
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$Id: page_stat.txt,v 1.2 2003/08/24 21:59:09 tdb Exp $ |
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Data Structure |
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-------------- |
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|
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typedef struct{ |
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long long pages_pagein; |
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long long pages_pageout; |
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time_t systime; |
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}page_stat_t; |
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|
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pages_pagein is the number of pages swapped in to memory |
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pages_pageout is the number of pages swapped out of memory (to swap) |
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Functions |
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--------- |
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|
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page_stat_t *get_page_stats(); |
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page_stat_t *get_page_stats_diff(); |
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|
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get_page_stats() and get_page_stats_diff() both return a pointer |
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to a static buffer of type page_stat_t. |
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|
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get_page_stats() will return the number of pages the system has |
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paged in and out since bootup. get_page_stats_diff() will return |
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the difference since last time it was called. If it has not been |
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called before, it will return get_page_stats(). |
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|
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Bugs |
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---- |
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|
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Solaris doesn't seem to report accurately. It reports the number |
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of pages swapped into memory, not necessarily from swap. This feature |
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isn't deemed entirely reliable :) |
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Example |
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------- |
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An example can be found in examples/page_stats.c |
