Unsubscribe On Fri, Sep 2, 2022, 5:08 PM Raymond Wilson <[email protected]> wrote:
> Thanks Zhenya. > > Is there any logging or metrics that would indicate if there was value > increasing the size of this pool? > > > On Fri, 2 Sep 2022 at 8:20 PM, Zhenya Stanilovsky via user < > [email protected]> wrote: > >> Hi Raymond >> >> checkpoint threads is responsible for dumping modified pages, so you may >> consider it as io bound only operation and pool size is amount of >> disc writing workers. >> I think that default is enough and no need for raising it, but it also up >> to you. >> >> >> Hi, >> >> I am looking at our configuration of the Ignite checkpointing system to >> ensure we have it tuned correctly. >> >> There is a checkpointing thread pool defined, which defaults to 4 threads >> in size. I have not been able to find much of a discussion on when/how this >> pool size should be changed to reflect the node size Ignite is running on. >> >> In our case, we are running 16 core servers with 128 GB RAM with >> persistence on an NFS storage layer. >> >> Given the number of cores, and the relative latency of NFS compared to >> local SSD, is 4 checkpointing threads appropriate, or are we likely to see >> better performance if we increased it to 8 (or more)? >> >> If there is a discussion related to this a pointer to it would be good >> (it's not really covered in the performance tuning section). >> >> Thanks, >> Raymond. >> >> -- >> <http://www.trimble.com/> >> Raymond Wilson >> Trimble Distinguished Engineer, Civil Construction Software (CCS) >> 11 Birmingham Drive >> <https://www.google.com/maps/search/11+Birmingham+Drive+%7C+Christchurch,+New+Zealand?entry=gmail&source=g> >> | >> <https://www.google.com/maps/search/11+Birmingham+Drive+%7C+Christchurch,+New+Zealand?entry=gmail&source=g> >> Christchurch, New Zealand >> <https://www.google.com/maps/search/11+Birmingham+Drive+%7C+Christchurch,+New+Zealand?entry=gmail&source=g> >> [email protected] >> <//e.mail.ru/compose/?mailto=mailto%[email protected]> >> >> >> >> <https://worksos.trimble.com/?utm_source=Trimble&utm_medium=emailsign&utm_campaign=Launch> >> >> >> >> >> >> >
