"swpd" is the number of blocks currently on the swap file.
Under "Swap:" is the number of buffers currently allocated for
swapping.
"IF" those commands were issued during the FTP, I would suggest you
don't have a swapping/paging problem. If they were issued after the
FTP, you have no way of knowing. I haven't seen a command that actually
gives a "high water mark" along with a timestamp for you to know when it
happened.
However, in one of the directories, there is a log with the output of a
series of performance related commands. i.e. something like "top" being
executed every minute and the output captured. (This is under SUSE.)
If you find those logs, you might be able to find out the system state
during your FTP. Or just try the FTP again while watching "vmstat 10
100" (every 10 seconds for 100 occurrances).
Tom Duerbusch
THD Consulting
>>> [EMAIL PROTECTED] 6/20/2006 3:41 PM >>>
We have a vendor doing some FTP stress-tests on one of our images, and
their tech has sent the following data, cut and pasted from a Linux
screen.
[EMAIL PROTECTED] ~]# vmstat
procs -----------memory---------- ---swap-- -----io---- --system--
----cpu----
r b swpd free buff cache si so bi bo in cs us
sy id wa
0 0 80 1768 1324 236552 0 0 224 180 270 294 0
1 94 4
[EMAIL PROTECTED] ~]# free -m
total used free shared buffers
cached
Mem: 371 369 1 0 1
229
-/+ buffers/cache: 139 231
Swap: 562 0 562
He mentions that "This indicates that swap was being used during the
ftp." I presume he is referring to the value 80 under "swpd" in the
memory category. That, however, does not seem to me to square with the
swap-in and swap-out rates of 0 and the "used" value of 0 on the last
line.
What exactly does the "swpd" number mean?
Thanks,
Jon
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