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.
> --
>
>Raymond Wilson
>Trimble Distinguished Engineer, Civil Construction Software (CCS)
>11 Birmingham Drive | Christchurch, New Zealand
>[email protected]
>
>
