After some time. I believe this is correct. The "load" seems to be correlated to compactions/number of files for keyspace/IO etc.
Thanks all! Regards, On Thu, Oct 18, 2012 at 9:35 PM, aaron morton <aa...@thelastpickle.com>wrote: > At times of high load check the CPU % for the java service running C* to > confirm C* is the source of load. > > If the load is generated from C* check the logs (or use OpsCentre / other > monitoring) to see if it correlated to compaction, or Garbage Collection or > repair or high throughput. > > Cheers > > ----------------- > Aaron Morton > Freelance Developer > @aaronmorton > http://www.thelastpickle.com > > On 17/10/2012, at 12:22 PM, Ben Kaehne <ben.kae...@sirca.org.au> wrote: > > Nothing unusual. > > All servers are exactly the same. Nothing unusual in the log files. Is > there any level of logging that I should be turning on? > > Regards, > > On Wed, Oct 17, 2012 at 9:51 AM, Andrey Ilinykh <ailin...@gmail.com>wrote: > >> With your environment (3 nodes, RF=3) it is very difficult to get >> uneven load. Each node receives the same number of read/write >> requests. Probably something is wrong on low level, OS or VM. Do you >> see anything unusual in log files? >> >> Andrey >> >> On Tue, Oct 16, 2012 at 3:40 PM, Ben Kaehne <ben.kae...@sirca.org.au> >> wrote: >> > Not connecting to the same node every time. Using Hector to ensure an >> even >> > distribution of connections accross the cluster. >> > >> > Regards, >> > >> > On Sat, Oct 13, 2012 at 4:15 AM, B. Todd Burruss <bto...@gmail.com> >> wrote: >> >> >> >> are you connecting to the same node every time? if so, spread out >> >> your connections across the ring >> >> >> >> On Fri, Oct 12, 2012 at 1:22 AM, Alexey Zotov <azo...@griddynamics.com >> > >> >> wrote: >> >> > Hi Ben, >> >> > >> >> > I suggest you to compare amount of queries for each node. May be the >> >> > problem >> >> > is on the client side. >> >> > Yoy can do that using JMX: >> >> > "org.apache.cassandra.db:type=ColumnFamilies,keyspace=<YOUR >> >> > KEYSPACE>,columnfamily=<YOUR CF>","ReadCount" >> >> > "org.apache.cassandra.db:type=ColumnFamilies,keyspace=<YOUR >> >> > KEYSPACE>,columnfamily=<YOUR CF>","WriteCount" >> >> > >> >> > Also I suggest to check output of "nodetool compactionstats". >> >> > >> >> > -- >> >> > Alexey >> >> > >> >> > >> > >> > >> > >> > >> > -- >> > -Ben >> > > > > -- > -Ben > > > -- -Ben
