I encountered a really odd phenomenon with syslog-ng yesterday. A mail- and web-server with considerable traffic was disconnected from the net for some hours during a router failure. After the router came back online and the server was reachable again, I noticed an unusual high system CPU load. Strangely, the server itself wasn’t changed in any way (it wasn’t even shut down) and suddenly the CPU utilization raised to around 80%, whereas it normally stays under 20%. Strange thing was, that most CPU time seemed to be eaten up by the syslog-ng daemon.
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syslog-ng eating up CPU time for no particular reason
Posted by Andreas on Tuesday, March 04, 2008 at 00:16 (CET)