04-14-2011
Same thing on my VPS
I recently signed up for a VPS with CentOS and CPanel/WHM. The exact same thing is happening on mine. Spikes every hour, on the hour. They last about 4 minutes and during that time there is piss poor system performance.
High IO Wait time. Memory levels are fine. No RAM swapping.
I monitored top during these spikes and the process that kept floating to the top was: md5sum
---------- Post updated at 03:42 AM ---------- Previous update was at 03:37 AM ----------
By the way, how do we fix what is going on? I am running "ps -ejH" but not sure what to look for. It is neat looking at the process tree! Sweet command.
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LEARN ABOUT DEBIAN
osd_clock
OSDClock(1) General Commands Manual OSDClock(1)
NAME
osd_clock - X on-screen clock displayer
SYNOPSIS
osd_clock [OPTION]... [+FORMAT]
DESCRIPTION
Display date/time information on screen.
-f FONT
Set font.
-c COLOR
Set color.
-d DELAY
Sets the delay (in seconds) that the clock is exposed. Useful if combined with INTERVAL.
-F FORMAT
This option specifies the format to be used to output the date. See 'strftime(3)'.
-i INTERVAL
This specifies the interval between displays. Default is 1 (display every second).
-H INTEGER
The "chimes per hour" count overrides -i. Default is 0 (no effect).
The time will be displayed this many times each hour (notwithstanding signals interrupting sleep, and leap seconds). The first dis-
play of the hour will be on the hour exactly. Use -H 4 for a display at 0, 15, 30 and 45 minutes past.
-s SHADOW
This option sets the shadow depth. Default 2.
-t locate clock at top left (default: bottom left).
-b locate clock at bottom left (default).
-o OFFSET
This option specifies the offset from the top or bottom of screen the text is displayed. The default is 0. Useful to move above or
below panels or applets.
-h, --help
display this help and exit
BUGS
The per-hour mode may fire up to one second late, or worse if the system is busy.
AUTHOR
Jon Beckham <leftorium@leftorium.net>
Martijn van de Streek <martijn@foodfight.org>
Nathan Walp <faceprint@faceprint.com>
COPYRIGHT
It is distributed under the GNU General Public License.
X OSD Clock March 2001 OSDClock(1)