Re: Ring connection timeouts with 2.2.6

2016-07-23 Thread Mike Heffner
rote: >>> >>>> AWS ubuntu 14.04 AMI ships with buggy enhanced networking driver – >>>> depending on your instance types / hypervisor choice, you may want to >>>> ensure you’re not seeing that bug. >>>> >>>> >>>>

Re: Ring connection timeouts with 2.2.6

2016-07-20 Thread Juho Mäkinen
with buggy enhanced networking driver – >>> depending on your instance types / hypervisor choice, you may want to >>> ensure you’re not seeing that bug. >>> >>> >>> >>> *From: *Mike Heffner >>> *Reply-To: *"user@cassandra.apache.org&q

Re: Ring connection timeouts with 2.2.6

2016-07-15 Thread Mike Heffner
y-To: *"user@cassandra.apache.org" >> *Date: *Friday, July 1, 2016 at 1:10 PM >> *To: *"user@cassandra.apache.org" >> *Cc: *Peter Norton >> *Subject: *Re: Ring connection timeouts with 2.2.6 >> >> >> >> Jens, >> >> >> >>

Re: Ring connection timeouts with 2.2.6

2016-07-05 Thread Mike Heffner
uot; > *Cc: *Peter Norton > *Subject: *Re: Ring connection timeouts with 2.2.6 > > > > Jens, > > > > We haven't noticed any particular large GC operations or even persistently > high GC times. > > > > Mike > > > > On Thu, Jun 30, 2016 at

Re: Ring connection timeouts with 2.2.6

2016-07-04 Thread Jeff Jirsa
To: "user@cassandra.apache.org" Cc: Peter Norton Subject: Re: Ring connection timeouts with 2.2.6 Jens, We haven't noticed any particular large GC operations or even persistently high GC times. Mike On Thu, Jun 30, 2016 at 3:20 AM, Jens Rantil wrote: Hi, Could it be garbag

Re: Ring connection timeouts with 2.2.6

2016-07-01 Thread Mike Heffner
Jens, We haven't noticed any particular large GC operations or even persistently high GC times. Mike On Thu, Jun 30, 2016 at 3:20 AM, Jens Rantil wrote: > Hi, > > Could it be garbage collection occurring on nodes that are more heavily > loaded? > > Cheers, > Jens > > Den sön 26 juni 2016 05:22

Re: Ring connection timeouts with 2.2.6

2016-06-30 Thread Jens Rantil
Hi, Could it be garbage collection occurring on nodes that are more heavily loaded? Cheers, Jens Den sön 26 juni 2016 05:22Mike Heffner skrev: > One thing to add, if we do a rolling restart of the ring the timeouts > disappear entirely for several hours and performance returns to normal. > It'

Re: Ring connection timeouts with 2.2.6

2016-06-25 Thread Mike Heffner
One thing to add, if we do a rolling restart of the ring the timeouts disappear entirely for several hours and performance returns to normal. It's as if something is leaking over time, but we haven't seen any noticeable change in heap. On Thu, Jun 23, 2016 at 10:38 AM, Mike Heffner wrote: > Hi,

Ring connection timeouts with 2.2.6

2016-06-23 Thread Mike Heffner
Hi, We have a 12 node 2.2.6 ring running in AWS, single DC with RF=3, that is sitting at <25% CPU, doing mostly writes, and not showing any particular long GC times/pauses. By all observed metrics the ring is healthy and performing well. However, we are noticing a pretty consistent number of conn