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From: kevin <kevincastiglione@gmail.com>
Date: Tue, 23 Feb 2010 09:33:06 -0800
Message-ID: <ff027e5c1002230933q314a38fcoa817caf17f21ec@mail.gmail.com>
Subject: reads are slow
To: cassandra-user@incubator.apache.org
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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!

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to load 100 columns of a super column it takes over a second. how to improv=
e this performance.<br><br><br>i am using cassandra 0.5 version.<br><br>out=
put of nodeprobe info<br>29814395632524962303611017038378268216<br>Load=A0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 : 9.18 GB<br>

Generation No=A0=A0=A0 : 1266945238<br>Uptime (seconds) : 638131<br>Heap Me=
mory (MB) : 47.55 / 10237.94<br><br>the full config file is here<br><a href=
=3D"http://pastie.org/838916">http://pastie.org/838916</a><br><br>I have gi=
ven 10GB RAM in <a href=3D"http://cassandra.in.sh">cassandra.in.sh</a>.<br>

=A0=A0=A0=A0=A0=A0=A0 -Xmx10G \<br>i have increased KeysCachedFraction to 0=
.04. i have two different drives for commitlog and data directoy.<br>i have=
 about 3 million rows.<br>what can i do to improve read speed?<br>thanks a =
lot!<br>

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