02-10-2012
Linux cache
Hi,
We are working on OEL5.7 (Oracle Linux) OS. We have a server with 64GB RAM. When we issue free -m command which shows the used, available and cached space. Most of the space is shown in cached section, where as we are not really doing much activity on the server.
It's like cached is somewhere around 23GB, how can we see what is in it which is cached and how do we clear it?
Thanks and Regards!
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cdsadv(1m) cdsadv(1m)
NAME
cdsadv - Starts the CDS client daemon
SYNOPSIS
cdsadv [-c] [-D] [-s] [-w route]
ARGUMENTS
Specifies cache size in kilobytes. Changing cache sizes causes previously cached information to be discarded, including information about
cached servers, so use of this option may necessitate defining a new cached server. NOTE : Alternatively this can be done by using the
tunable parameter cdsadv.cache_size provided in the /opt/dcelocal/etc/cds.conf file. This parameter takes a cache size in KiloBytes as
shown:
cdsadv.cache_size: 512 and sets the cdsadv cache size to 512 KiloBytes. cdsadv needs to be restarted for this value to be effective.
This is the recommended method to set cdsadv cache size. For debugging use only. Causes the cdsadv process not to fork. Causes the cdsadv
not to send or receive advertisements. This argument can be used for diagnostic work involving multiple servers on the same local area
network to limit access to those servers identified with the define cached server command. Routes serviceability messages.
DESCRIPTION
The cdsadv command starts the CDS client daemon.
Privilege Required
You must log in as superuser (root).
NOTES
This command is ordinarily executed by a DCE configuration or startup script. You should use this command interactively only when cdsadv
fails to start automatically after a reboot, or if you want to restart cdsadv after disabling it to perform a backup or to do diagnostic
work on the host system.
EXAMPLE
To restart cdsadv, follow these steps: Log in to the clerk system as superuser (root). Verify that the dced process is running. Enter the
following command to restart the cdsadv process:
# cdsadv
RELATED INFORMATION
Books: OSF DCE Administration Guide
cdsadv(1m)