Re: High disk I/O during reads

2013-03-23 Thread Matt Kap
Having battled similar issues with read latency recently, here's some general things to look out for. - At 118ms, something is definitely broken. You should be looking at under 10ms or lower, depending on hardware. - Do "nodetool info" on all 5 nodes. Is the load distributed evenly? Is it reasonab

Re: hinted handoff disabling trade-offs

2013-03-20 Thread Matt Kap
tween the latency reported in the proxyhistograms and the cfhistograms or > cfstats. > > Cheers > > - > Aaron Morton > Freelance Cassandra Consultant > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 16/03/2013, at 4:50 PM, Matt Kap wrot

Re: hinted handoff disabling trade-offs

2013-03-15 Thread Matt Kap
my Samsung smartphone on AT&T > > > Original message > Subject: Re: hinted handoff disabling trade-offs > From: Michael Kjellman > To: "user@cassandra.apache.org" > CC: > > > Repair is slow. > > On Mar 4, 2013, at 8:07 PM, "Matt

hinted handoff disabling trade-offs

2013-03-04 Thread Matt Kap
I am looking to get a second opinion about disabling hinted-handoffs. I have an application that can tolerate a fair amount of inconsistency (advertising domain), and so I'm weighting the pros and cons of hinted handoffs. I'm running Cassandra 1.0, looking to upgrade to 1.1 soon. Pros of disabling