Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

I've got munin monitoring virtual private server. And here're graphs for context switches:

By day: http://imgur.com/ljon5.gif

What could have caused this? I'm not worried about the pike, because it can be explained with heavy load which is confirmed by other graphs. But what about flatline? It looks like several days with zero switches, then it magically turns back on. And now it's off again. Any advice on where to look is greatly appreciated.

share|improve this question
    
Graph by week: imgur.com/subpr.gif Too low rep to post 2 links, sorry. –  clorz Feb 10 '10 at 16:13

1 Answer 1

up vote 0 down vote accepted

Did what-ever service is monitoring the stats fall over and is in need of restarting? It could be that your grapher sees "no reading" as a zero reading.

share|improve this answer
    
I've tried restarting munin node. That didn't work. But you're right nonetheless, reboot works. –  clorz Feb 15 '10 at 0:01

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.