11-15-2002
Swap Space Problem?
Over the last couple of days my laptop has been stalling terribly on bootup and when starting up applications (even a terminal takes ages to come up) Whilst trying to figure out whats happened I noticed that nothing is being swapped out. Output from top command shows that I have approx 500mb allocated to swap but none of it is being used...dont think this was the case before!
I have used swapon command to try and 'restart' it and there is a corresponding line in /etc/fstab but nothing seems to be happening. I am running redhat 7.3 and have 256mb ram..I am not entirely sure this is the culprit of my woes but something should be getting swapped out right?...anyone seen anything like this before?
as always any pointers appreciated.
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LEARN ABOUT DEBIAN
sg_get_page_stats_diff
sg_get_page_stats(3) Library Functions Manual sg_get_page_stats(3)
NAME
sg_get_page_stats, sg_get_page_stats_diff - get paging statistics
SYNOPSIS
#include <statgrab.h>
sg_page_stats *sg_get_page_stats(void);
sg_page_stats *sg_get_page_stats_diff(void);
DESCRIPTION
sg_get_page_stats and sg_get_page_stats_diff both return a pointer to a static buffer of type sg_page_stats.
sg_get_page_stats will return the number of pages the system has paged in and out since bootup. sg_get_page_stats_diff will return the
difference since last time it was called. If it has not been called before, it will return sg_get_page_stats.
RETURN VALUES
typedef struct{
long long pages_pagein;
long long pages_pageout;
time_t systime;
}sg_page_stats;
pages_pagein
The number of pages swapped into memory.
pages_pageout
The number of pages swapped out of memory (to swap).
systime
The time period over which pages_pagein and pages_pageout were transferred.
BUGS
Solaris doesn't seem to report accurately. It reports the number of pages swapped into memory, not necessarily from swap. This feature
isn't deemed entirely reliable.
SEE ALSO
statgrab(3)
WEBSITE
http://www.i-scream.org/libstatgrab/
i-scream $Date: 2005/04/25 11:25:45 $ sg_get_page_stats(3)