cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Brian Burruss <bburr...@real.com>
Subject Re: read latency creaping up
Date Mon, 14 Dec 2009 22:59:15 GMT
Well not sure how that would affect he latency as reported by the Cassandra server using nodeprobe
cfstats

Jonathan Ellis <jbellis@gmail.com> wrote:


possibly the clients are running into memory pressure?

On Mon, Dec 14, 2009 at 4:27 PM, Brian Burruss <bburruss@real.com> wrote:
> thx, i'm actually the "B. Todd Burruss" in that thread ..  we changed our email system
and well now, i'm just Brian .. long story.
>
> anyway, in this case it isn't compaction pendings as i can kill the clients and immediately
restart and the latency is back to a reasonable number.  i'm still investigating.
>
> thx!
> ________________________________________
> From: Eric Evans [eevans@rackspace.com]
> Sent: Monday, December 14, 2009 8:23 AM
> To: cassandra-user@incubator.apache.org
> Subject: RE: read latency creaping up
>
> On Sun, 2009-12-13 at 13:18 -0800, Brian Burruss wrote:
>> if this isn't a known issue, lemme do some more investigating.  my
>> test client becomes "more random" with reads as time progresses, so
>> possibly this is what causes the latency issue.  however, all that
>> being said, the performance really becomes bad after a while.
>
> Have a look at the following thread:
>
> http://thread.gmane.org/gmane.comp.db.cassandra.user/1402
>
>
> --
> Eric Evans
> eevans@rackspace.com
>
>

Mime
View raw message