:D Jay, check if your disk(s) utilization allows you to change the configuration the way Edward suggest. iostat -xkcd 1 will show you how much of your disk(s) are in use.
On Wed, Apr 17, 2013 at 5:26 PM, Edward Capriolo <edlinuxg...@gmail.com>wrote: > three things: > 1) compaction throughput is fairly low (yaml nodetool) > 2) concurrent compactions is fairly low (yaml) > 3) multithreaded compaction might be off in your version > > Try raising these things. Otherwise consider option 4. > > 4)$$$$$$$$$$$$$$$$$$$$$$$ RAID,RAM<CPU$$$$$$$$$$$$$$ > > > On Wed, Apr 17, 2013 at 4:01 PM, Jay Svc <jaytechg...@gmail.com> wrote: > >> Hi Team, >> >> >> >> I have a high write traffic to my Cassandra cluster. I experience a very >> high number of pending compactions. As I expect higher writes, The pending >> compactions keep increasing. Even when I stop my writes it takes several >> hours to finishing pending compactions. >> >> >> My CF is configured with LCS, with sstable_size_mb=20M. My CPU is below >> 20%, JVM memory usage is between 45%-55%. I am using Cassandra 1.1.9. >> >> >> How can I increase the compaction rate so it will run bit faster to match >> my write speed? >> >> >> Your inputs are appreciated. >> >> >> Thanks, >> >> Jay >> >> >
