how to change the configure in order to trigger GC earlier not when it is close
to the memory maximum?
2010-09-08
shangan
发件人： Steve Loughran
发送时间： 2010-09-06 18:16:51
收件人： common-user
抄送：
主题： Re: namenode consume quite a lot of memory with only serveral hundredsof
files in it
The fact that the memory is high is not necessarily a bad thing.
Faster garbage collection implies more CPU usage.
I had some success following the tuning advice here, to make my memory
usage less spikey
http://blog.mikiobraun.de/2010/08/cassandra-gc-tuning.html
Again, less spikes != better
