Re: Understanding the difference between write and read operations

2020-02-27 Thread s.suzuki
Hello. Thank you for answering the question. Sorry, let me ask you another question. In the same environment, set the replication factor to "4" again as follows. Displayed the trace results of write and read operations at the consistency level QUORUM. > CREATE KEYSPACE test1 WITH REPLICATION =

Re: Hints replays very slow in one DC

2020-02-27 Thread Reid Pinchback
Our experience with G1GC was that 31gb wasn’t optimal (for us) because while you have less frequent full GCs they are bigger when they do happen. But even so, not to the point of a 9.5s full collection. Unless it is a rare event associated with something weird happening outside of the JVM (the

Re: Hints replays very slow in one DC

2020-02-27 Thread Krish Donald
Thanks everyone for the response. How to debug more on GC issue ? Is there any GC issue which is present in 3.11.0 ? On Thu, Feb 27, 2020 at 8:46 AM Reid Pinchback wrote: > Our experience with G1GC was that 31gb wasn’t optimal (for us) because > while you have less frequent full GCs they are big

Re: Hints replays very slow in one DC

2020-02-27 Thread Elliott Sims
I definitely saw a noticeable decrease in GC activity somewhere between 3.11.0 and 3.11.4. I'm not sure which change did it, but I can't think of any good reason to use 3.11.0 vs 3.11.6. I would enable and look through GC logs (or just the slow-GC entries in the default log) to see if the problem