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> > > > > > >
