12-02-2008
Try clearing memory cache - sync; echo 3 > /proc/sys/vm/drop_caches
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HI
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Linux Kernels 2.6.16 and up provide a way to instruct the kernel to drop the page cache, inode and dentry caches on command. This tip can help free Linux memory without a reboot.
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LEARN ABOUT DEBIAN
xpp_sync
XPP_SYNC(8) User Contributed Perl Documentation XPP_SYNC(8)
NAME
xpp_sync - Handle sync selection of Xorcom Astribanks.
SYNOPSIS
xpp_sync <auto|dahdi|nn>
xpp_sync [-v]
DESCRIPTION
On a normal operation one Astribank device provides timing for all the other Astribank devices.
When run without parameters, xpp_sync will display a list of Astribanks (xbuses) that are connected and registered as Dahdi spans. The
current xpp sync master will be marked.
If you this an Astribank is connected and yet it does not appear on the output of xpp_sync, it may be unregistered. Try running
dahdi_registration .
Parameters
auto
Automatically selects the best Astribank for syncing.
dahdi
Gets synchronization from the Dahdi sync master.
nn Sets XBUS-nn as sync source.
-v Also print the numeric xpp sync rank.
(Parameter name is case-insensitive)
Example output:
Setting SYNC
Current sync: 01
Best Available Syncers:
+ XBUS-01 (usb-0000:00:10.4-3) [usb:12345678] [ PRI_TE PRI_NT PRI_TE PRI_NT ]
XBUS-00 (usb-0000:00:10.4-2) [usb:QA-01] [ FXS FXO ]
==================================================
WARNING: FXO which is not the syncer cause bad PCM
Affected Astribanks are:
--------------------------------------------------
XBUS-00
==================================================
In this example we see that the recommended xpp sync master is XBUS-02 - it is the first on the list. It is also the actual syncer, as we
can see from the '+' beside it.
xpp_sync is normally called from the dahdi init.d script. The parameter it is called with defaults to auto, but it is possible to override
that parameter (e.g: set it to dahdi) through the value of XPP_SYNC in /etc/dahdi/init.conf .
FILES
/proc/xpp/sync
(Deprecated: no longer supported) xpp_sync is essentially a nicer interface to /proc/xpp/sync . That file shows the current xpp sync
master (and in what format you need to write to it to set the master).
SEE ALSO
dahdi_registration(1), dahdi_cfg(1), README.Astribank
perl v5.14.2 2009-09-30 XPP_SYNC(8)