For some reason the box ran the "/sbin/sysctl -q -w vm.drop_caches=3" command - but I have no idea if it was in relation to a low memory situation, or whether it is part of a cronjob. I would assume the first as otherwise everyone would be seeing this...
On Tue, May 14, 2013 at 10:24 PM, Manu Chao <[email protected]> wrote: > Thanks Andrew > > but NX(OS) is running on top of a specific modified linux kernel we do not > have access :( > > sync is not available and echo commands doesn't help (error could not open > temporary file): > > N5K# echo 1 > /proc/sys/vm/drop_caches > 1 > Error: could not open temporary file /bootflash/proc/sys/vm/drop_caches > (errno=2)Error: could not open temporary file /bootflash/pro > c/sys/vm/drop_caches (errno=2) > > N5K# echo 2 > /proc/sys/vm/drop_caches > 2 > Error: could not open temporary file /bootflash/proc/sys/vm/drop_caches > (errno=2)Error: could not open temporary file /bootflash/pro > c/sys/vm/drop_caches (errno=2) > > N5K# echo 3 > /proc/sys/vm/drop_caches > 3 > Error: could not open temporary file /bootflash/proc/sys/vm/drop_caches > (errno=2)Error: could not open temporary file /bootflash/pro > c/sys/vm/drop_caches (errno=2) > > :( > > > On Tue, May 14, 2013 at 12:44 PM, Andrew Miehs <[email protected]> wrote: > >> Google is your friend... >> >> https://www.kernel.org/doc/Documentation/sysctl/vm.txt >> >> >> drop_caches >> >> Writing to this will cause the kernel to drop clean caches, dentries and >> inodes from memory, causing that memory to become free. >> >> To free pagecache: >> echo 1 > /proc/sys/vm/drop_caches >> To free dentries and inodes: >> echo 2 > /proc/sys/vm/drop_caches >> To free pagecache, dentries and inodes: >> echo 3 > /proc/sys/vm/drop_caches >> >> As this is a non-destructive operation and dirty objects are not freeable, >> the >> user should run `sync' first. >> >> >> >> On Tue, May 14, 2013 at 7:55 PM, Manu Chao <[email protected]> wrote: >> >>> Any idea about this vm.drop.cache syslog message on Nexus 5548: >>> >>> >>> %AUTHPRIV-5-SYSTEM_MSG: root : TTY=console ; >>> PWD=/var/sysmgr/sysmgr-subproc ; USER=root ; COMMAND=/sbin/sysctl -q -w >>> vm.drop_caches=3 - sudo >>> >>> >>> Any help will be appreciate >>> _______________________________________________ >>> cisco-nsp mailing list [email protected] >>> https://puck.nether.net/mailman/listinfo/cisco-nsp >>> archive at http://puck.nether.net/pipermail/cisco-nsp/ >>> >> >> > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
