CentOS - Jan 2019 - Measure system resources consumptions by ClamAV File scanner

Hi,

I am running ClamAV process which is invoked by Cron scheduler around 3:00
AM ( Midnight) on remote server running CentOS Linux release 7.6.1810
(Core). Is there a way to measure what was the system resources
consumptions like CPU, Network, I/O, Memory and Computing load is
being used and is it possible to find out how much time it took to complete
the scan?

Any help will be highly appreciated. Thanks in Advance.

Best Regards,

Kaushal

On Thu, Jan 03, 2019 at 11:17:03PM +0530, Kaushal Shriyan
wrote:
> I am running ClamAV process which is invoked by Cron scheduler around 3:00
> AM ( Midnight) on remote server running CentOS Linux release 7.6.1810
> (Core). Is there a way to measure what was the system resources
> consumptions like CPU, Network, I/O, Memory and Computing load is
> being used and is it possible to find out how much time it took to complete
> the scan?
The easiest thing I can think of would be to prepend the command in
the crontab with /usr/bin/time (or '/usr/bin/time -v' to get the
output to be more verbose).

You'll get something like this (example using 'dd'):


$ /usr/bin/time -v dd if=/dev/urandom of=/dev/null count=500 bs=1M
500+0 records in
500+0 records out
524288000 bytes (524 MB, 500 MiB) copied, 2.19242 s, 239 MB/s
	Command being timed: "dd if=/dev/urandom of=/dev/null count=500
bs=1M"
	User time (seconds): 0.00
	System time (seconds): 2.19
	Percent of CPU this job got: 99%
	Elapsed (wall clock) time (h:mm:ss or m:ss): 0:02.19
	Average shared text size (kbytes): 0
	Average unshared data size (kbytes): 0
	Average stack size (kbytes): 0
	Average total size (kbytes): 0
	Maximum resident set size (kbytes): 3140
	Average resident set size (kbytes): 0
	Major (requiring I/O) page faults: 0
	Minor (reclaiming a frame) page faults: 342
	Voluntary context switches: 1
	Involuntary context switches: 24
	Swaps: 0
	File system inputs: 0
	File system outputs: 0
	Socket messages sent: 0
	Socket messages received: 0
	Signals delivered: 0
	Page size (bytes): 4096
	Exit status: 0



-- 
Jonathan Billings <billings at negate.org>