And the final solution http://unbxd.com/blog/2012/07/java-and-ksoftirqd-100-cpu-due-to-leap-second/
Doing $ date -s "`date`" solved the problem. 30.07.2012, 16:09, "Nikolay Kоvshov" <nkovs...@yandex.ru>: > You mean using swap memory? I have total of 48G of RAM and Cassandra never > used more than 2G, swap is disabled. > > But as I have little clues, I can give this a try. Is there any fresh > instruction on running Cassandra with JNA ? > > 30.07.2012, 16:01, "Mateusz Korniak" <mateusz-li...@ant.gliwice.pl>: >> On Monday 30 of July 2012, Nikolay Kоvshov wrote: >>> - JNA is not installed on both machines >> So your GC times may be strongly [1] affected by swapping. >> IIRC, also snapshotting is more expensive and may trigger more swapping. >> I would start with turning JNA mlockall on [2]. >> >> [1]: >> Not sure if up to numbers you presented ( many seconds)... >> >> [2]: >> INFO [main] 2012-07-27 12:18:27,135 CLibrary.java (line 109) JNA mlockall >> successful >> >> -- >> Mateusz Korniak
