Detailed Sys-Snap Output

Here, we outline how to use Sys-snap, a diagnostic tool that logs up to 24 hours of resource usage data.

It is used to track down the causes of resource shortages, whether CPU or Memory-related, even when no one is looking.

The verbose output lists extra detailed information, events, or connections from the user root, along with the systems services and daemon processes, using the --v flag.

Related Articles

Install Sys-snap
Parse Old Sys-snap Data

Gather Data

IMPORTANT: This solution will require root access. If this needs to be obtained, follow the guide on requesting root access.

1. SSH into the server as root
   
2. Run the command sys-snap.pl --print HH:MM HH:MM --v to display verbose output
   REPLACE: HH:MM with the start and end time to print.
   EXAMPLE: In the output below, we can deduce that  /home/eve/public_html/domain.com/script.php was the main cause of the CPU spike, and the focus should be on that particular script.
   

   ~# sys-snap.pl --print 00:00 1:00 --v
   user: dovecot         
   memory-score: 84.30    memory-score:
   M: 84.30 proc: \_ dovecot/auth
   M: 0.00 proc: \_ dovecot/anvil
   cpu-score: 6.90      
   C: 6.90 proc: \_ dovecot/auth
   C: 0.00 proc: \_ dovecot/anvil
   
   user: eve
   memory-score: 345.00
   M: 345.00 proc: /usr/bin/php /home/eve/public_html/domain.com/script.php
   M: 0.00 proc: /usr/bin/ruby /usr/bin/mongrel_rails start -p 12008 -d -e production -P log/mongrel.pid
   cpu-score: 23847.00
   C: 23847.00 proc: /usr/bin/php /home/eve/public_html/domain.com/script.php
   C: 0.00 proc: /usr/bin/ruby /usr/bin/mongrel_rails start -p 12008 -d -e production -P log/mongrel.pid

Limited Detailed Output

IMPORTANT: This solution will require root access. If this needs to be obtained, follow the guide on requesting root access.
NOTE: The --max-lines flag, will provide the specified number of lines of detailed information under each process, resource, or service that is logged in the sys-snap.pl file. Providing a way to shorten the amount of output you will see for each logged section. 

1. SSH into the server as root
2. Run the command sys-snap.pl --print HH:MM HH:MM -v --max-lines <number>
   REPLACE: <number> with the number of lines to display and HH:MM with the start and end time to print.
   EXAMPLE:
   

   ~# sys-snap.pl --print 10:00 11:00 --v --max-lines 3
   user: userna5
   cpu-score: 64.10
   C: 22.00 proc: \_ /usr/bin/php /home/userna5/domain.com/wp-cron.php
   C: 22.00 proc: \_ php-fpm: pool domain_com
   C: 16.00 proc: \_ php-fpm: pool staging_domain_com
   
   memory-score: 33.30
   M: 13.10 proc: \_ php-fpm: pool domain_com
   M: 12.80 proc: \_ php-fpm: pool staging_domain_com
   M: 2.80 proc: \_ dovecot/im