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#26 2013-11-03 08:50:01

perseus
Member
Registered: 2007-01-28
Posts: 160

Re: [SOLVED] - Freezes since kernel 3.11.4-1 - apparently due to kswapd0

highway : Running xine is a choice - I knew I had started to use it, but it was hard to work out the problem it was causing.

More generally there is an excellent range of tools to monitor your system in action, check out top, htop, slabtop and atop. Those are all console applications, but I also find qps to be very good under X. They all give detailed real-time information. The problem I had was that, in spite of staring at them for long periods, I was : (a) looking for the wrong thing (growth of memory utilisation in userspace) and (b) not watching when xine did its occasional and subtle thing. That is where atop is so useful, because it has a very simple option to write to a log. You can then play the log back and fast forward - seeing hours of use in minutes.  Used that way (by an inexpert person like me at least), it acts a bit like a blink-comparator.. Eventually some correlation stands out.

There is, by the way, an excellent help on using atop at atop little tutorial on using atop at http://www.atoptool.nl/. I found this little case study particularly useful http://www.atoptool.nl/download/case_leakage.pdf

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#27 2013-11-03 23:27:29

highway
Member
Registered: 2012-07-28
Posts: 81

Re: [SOLVED] - Freezes since kernel 3.11.4-1 - apparently due to kswapd0

perseus wrote:

highway : Running xine is a choice - I knew I had started to use it, but it was hard to work out the problem it was causing.

More generally there is an excellent range of tools to monitor your system in action, check out top, htop, slabtop and atop. Those are all console applications, but I also find qps to be very good under X. They all give detailed real-time information. The problem I had was that, in spite of staring at them for long periods, I was : (a) looking for the wrong thing (growth of memory utilisation in userspace) and (b) not watching when xine did its occasional and subtle thing. That is where atop is so useful, because it has a very simple option to write to a log. You can then play the log back and fast forward - seeing hours of use in minutes.  Used that way (by an inexpert person like me at least), it acts a bit like a blink-comparator.. Eventually some correlation stands out.

There is, by the way, an excellent help on using atop at atop little tutorial on using atop at http://www.atoptool.nl/. I found this little case study particularly useful http://www.atoptool.nl/download/case_leakage.pdf

thanks! i was using htop not atop! i was looking for something to write to a log!

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