are you i/o bound? http://spyced.blogspot.com/2010/01/linux-performance-basics.html
On Tue, Feb 23, 2010 at 11:33 AM, kevin <kevincastigli...@gmail.com> wrote: > to load 100 columns of a super column it takes over a second. how to improve > this performance. > > > i am using cassandra 0.5 version. > > output of nodeprobe info > 29814395632524962303611017038378268216 > Load : 9.18 GB > Generation No : 1266945238 > Uptime (seconds) : 638131 > Heap Memory (MB) : 47.55 / 10237.94 > > the full config file is here > http://pastie.org/838916 > > I have given 10GB RAM in cassandra.in.sh. > -Xmx10G \ > i have increased KeysCachedFraction to 0.04. i have two different drives for > commitlog and data directoy. > i have about 3 million rows. > what can i do to improve read speed? > thanks a lot! >
