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
px_timestamp2string
PX_TIMESTAMP2STRING(3) Library Functions Manual PX_TIMESTAMP2STRING(3)
NAME
PX_timestamp2string -- Convert paradox timestamp into formated string
SYNOPSIS
#include <paradox.h>
char * PX_timestamp2string(pxdoc_t *pxdoc, double timestamp, const char *format)
DESCRIPTION
Creates a string representation of a paradox timestamp as specified in the parameter format. The timestamp must be either retrieved with
PX_get_data_double(3) after calling PX_get_record(3) or by simply using the double value in the pxval_t struct as returned by
PX_retrieve_record(3). A timestamp contains both time and date information. The format string contains chars which stand for certain values
of the date/time. The following table lists all available characters with a meaning. All other characters are being copied unmodified to
the output string. If a special character shall not be interpreted it must be preceded with a backslash.
Characters and their meaning in date/time format string
Character Meaning
Y year, numeric, 4 digits
y year, numeric, 2 digits
m month, numeric
n month, numeric, no leading zeroes
d day of the month, numeric
j T{
day of the month, numeric, no leading zeros
T}
H hour, numeric, 24 hour format
h hour, numeric, 12 hour format
G T{
hour, numeric, 24 hour format, no leading zeroes
T}
g T{
hour, numeric, 12 hour format, no leading zeroes
T}
i minutes, numeric
s seconds, numeric
A AM/PM
a am/pm
L boolean for leap year
RETURN VALUE
Returns pointer to string on success and NULL on failure.
SEE ALSO
PX_time2string(3), PX_date2string(3)
AUTHOR
This manual page was written by Uwe Steinmann uwe@steinmann.cx.
PX_TIMESTAMP2STRING(3)