: Friday, March 17, 2017 2:51 PM
To: user@cassandra.apache.org
Subject: Random slow read times in Cassandra
I have a large Cassandra 2.1.13 ring (60 nodes) in AWS that has consistently
random high read times. In general most reads are under 10 milliseconds but
with in the 30 request there is usually a
check for level 2 (stop the world) garbage collections.
*...*
*Daemeon C.M. ReiydelleUSA (+1) 415.501.0198London (+44) (0) 20 8144 9872*
On Fri, Mar 17, 2017 at 11:51 AM, Chuck Reynolds
wrote:
> I have a large Cassandra 2.1.13 ring (60 nodes) in AWS that has
> consistently random high r
Probably Jvm pauses. Check your logs for long GC times.
On Fri, Mar 17, 2017 at 11:51 AM Chuck Reynolds
wrote:
> I have a large Cassandra 2.1.13 ring (60 nodes) in AWS that has
> consistently random high read times. In general most reads are under 10
> milliseconds but with in the 30 request the
I have a large Cassandra 2.1.13 ring (60 nodes) in AWS that has consistently
random high read times. In general most reads are under 10 milliseconds but
with in the 30 request there is usually a read time that is a couple of seconds.
Instance type: r4.8xlarge
EBS GP2 volumes, 3tb with 9000 IOPS
