G1GC would be the most suitable option and it has better control over pauses and optimal.
Best Regards, Kiran M K On Wed, Nov 17, 2021, 10:27 PM Elliott Sims <elli...@backblaze.com> wrote: > CMS has a higher risk of a long stop-the-world full GC that will cause a > burst of timeouts, but if you're not getting that or don't mind if it > happens now and then CMS is probably the way to go. It's generally > lower-overhead than G1. If you really don't care about latency it might > even be worth testing the Parallel collector, but at 16GB there might be > timeouts. > > On Wed, Nov 17, 2021 at 6:25 AM onmstester onmstester <onmstes...@zoho.com> > wrote: > >> Thank You >> I'm going to achieve the most possible (write) throughput with Cassandra >> and care less about latency, recommendations from community suggests that >> better to use G1GC with 16GB heap, but when i already got 92% throughput >> with CMS, should i consider changing it? >> >> Sent using Zoho Mail <https://www.zoho.com/mail/> >> >> >> ---- On Tue, 16 Nov 2021 16:52:29 +0330 *Bowen Song <bo...@bso.ng >> <bo...@bso.ng>>* wrote ---- >> >> Do you have any performance issues? such as long STW GC pauses or high >> p99.9 latency? If not, then you shouldn't tune the GC for the sake of it. >> However, if you do have performance issues related to GC, regardless what >> is the GC metric you are looking at saying, you will need to address the >> issue and that probably will involve some GC tunings. >> On 15/11/2021 06:00, onmstester onmstester wrote: >> >> Hi, >> We are using Apache Cassandra 3.11.2 with its default gc configuration >> (CMS and ...) on a 16GB heap, i inspected gc logs using gcviewer and it >> reported 92% of throughput, is that means not necessary to do any further >> tuning for gc? and everything is ok with gc of Cassandra? >> >> >> Sent using Zoho Mail <https://www.zoho.com/mail/> >> >> >> >> >>
