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Top Forums UNIX for Dummies Questions & Answers What to monitor for memory usage? Post 302538112 by karlochacon on Monday 11th of July 2011 11:01:35 PM
Old 07-12-2011
What to monitor for memory usage?

hi guys

I am having a doubt about memory monitoring on linux system
what I should be monitoring? memory usage? o swap usage?

I am using some monitoring tools but I am confused to what monitor for alerting

for example this case
looks the memory usage is very high and it's like that all the time
so is it memory usage or swap usage? in case swap is the metric what should be threshold ?

Code:
Mem:   2738708k total,  2620784k used,   117924k free,   107872k buffers
Swap:  2104472k total,      240k used,  2104232k free,   837772k cached

thanks a lot guys
 

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LWP::Debug(3)						User Contributed Perl Documentation					     LWP::Debug(3)

NAME
LWP::Debug - deprecated DESCRIPTION
LWP::Debug used to provide tracing facilities, but these are not used by LWP any more. The code in this module is kept around (undocumented) so that 3rd party code that happen to use the old interfaces continue to run. One useful feature that LWP::Debug provided (in an imprecise and troublesome way) was network traffic monitoring. The following section provide some hints about recommened replacements. Network traffic monitoring The best way to monitor the network traffic that LWP generates is to use an external TCP monitoring program. The Wireshark program (<http://www.wireshark.org/>) is higly recommended for this. Another approach it to use a debugging HTTP proxy server and make LWP direct all its traffic via this one. Call "$ua->proxy" to set it up and then just use LWP as before. For less precise monitoring needs just setting up a few simple handlers might do. The following example sets up handlers to dump the request and response objects that pass through LWP: use LWP::UserAgent; $ua = LWP::UserAgent->new; $ua->default_header('Accept-Encoding' => scalar HTTP::Message::decodable()); $ua->add_handler("request_send", sub { shift->dump; return }); $ua->add_handler("response_done", sub { shift->dump; return }); $ua->get("http://www.example.com"); SEE ALSO
LWP::UserAgent perl v5.18.2 2012-01-13 LWP::Debug(3)
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