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Operating Systems Linux Red Hat Memory problems in NFS client server Post 302633705 by blast on Wednesday 2nd of May 2012 10:42:24 AM
Old 05-02-2012
Hi mark54g,

Thanks in advance.

I don't think that is the case because i m considering free memory as free + plus buffers and cache.

for example:
free -m
total used free shared buffers cached
Mem: 3767 1684 2082 0 327 871
-/+ buffers/cache: 485 3281
Swap: 1999 0 1999

used memory is 485 and free 3281.

the picture now is good (because i did the umount/mount) lots of free memory (3281) but in a couple of days free memory will tend to 0. i never let it get to 0 because the memory is in "really" used state.

i can put a script in cron to umount and mount the nfs fs but i would like to know and correct this behavior if possible.

Can it be something like a nfs caching? i used the noac option to disable the file attribute caching and so the client as to go all the times to the server to check the status of the file

What do you think?

Thanks
 

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FREE(1) 							Linux User's Manual							   FREE(1)

NAME
free - Display amount of free and used memory in the system SYNOPSIS
free [-b|-k|-m|-g] [-c count] [-l] [-o] [-t] [-s delay] [-V] DESCRIPTION
free displays the total amount of free and used physical and swap memory in the system, as well as the buffers used by the kernel. The shared memory column should be ignored; it is obsolete. OPTIONS -b Display the amount of memory in bytes. -c count Display the result count times. Requires the -s option. -g Display the amount of memory in gigabytes. -k Display the amount of memory in kilobytes. This is the default. -l Show detailed low and high memory statistics. -m Display the amount of memory in megabytes. -o Display the output in old format, the only difference being this option will disable the display of the "buffer adjusted" line. -s Continuously display the result delay seconds apart. You may actually specify any floating point number for delay, usleep(3) is used for microsecond resolution delay times. -t Display a line showing the column totals. -V Display version information. FILES
/proc/meminfo memory information AUTHORS
Written by Brian Edmonds. Send bug reports to <albert@users.sf.net> SEE ALSO
ps(1), slabtop(1), top(1), vmstat(8). Cohesive Systems 5 Oct 2009 FREE(1)
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