Our system resources are: OS (as a docker) has 4cpu and 32GB RAM, and we gave Solr 12GB java heap.
If I understand you correctly this situation is not like what you had @Gaikwad, correct? (We should also have enough physical memory for all of our containers without getting into a problem). Sent with [ProtonMail](https://protonmail.com/) Secure Email. ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Tuesday, February 1st, 2022 at 1:34 PM, 123456780sss 123456780...@protonmail.com.INVALID wrote: > we've tried to check if that's the problem but we couldn't really understand > how to check that... > > what were the parameters you changed specifically? (we work with linux) > > thanks, > > 123456780sss > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ > > On Saturday, January 22nd, 2022 at 7:34 PM, Rajendra Gaikwad > rajendra...@gmail.com wrote: > >> Another reason could be insufficient memory available with the OS. >> >> I faced a similar issue in the past, after releasing some amount of memory >> >> it works. >> >> e.g Machine/Server has 6 GB total memory, Java process allocated 5.4 GB and >> >> OS left with 600MB, It was causing the same issue(unable to create native >> >> thread). After reducing memory allocated to the java and leaving a >> >> significant amount of memory for the OS, it works. >> >> Thanks, >> >> Rajendra Gaikwad >> >> On Thu, Jan 20, 2022 at 9:14 PM Shawn Heisey apa...@elyograg.org wrote: >> >>> On 1/20/22 5:54 AM, 123456780sss wrote: >>> >>>> However, we've checked the nproc and nofile in our cluster and right now >>>> >>>> they are set to 4096 each, unlike the 1024 that was theorized. We will >>>> >>>> probably try to raise it to 8192 anyway, but we're not sure that the impact >>>> >>>> will be as great as expected initially. Do you think it's still going to >>>> >>>> solve the issue? >>> >>> To see what the actual effective limits are on Linux for a running >>> >>> process, you can do the following command, where NNNNN is the pid of the >>> >>> process you want to check: >>> >>> cat /proc/NNNNN/limits >>> >>> I do not know what options area available for other operating systems. >>> >>> 4096 is probably enough, I just like to allow something higher just in >>> >>> case it it suddenly needs more to handle a momentary spike in load. I >>> >>> think the highest thread count I ever saw for a Solr instance when >>> >>> checking it with jconsole is somewhere in the neighborhood of 1300, on a >>> >>> large install for the company I was working for at the time. Looking at >>> >>> the tiny Solr instance I am running for mail server, right now it has 46 >>> >>> threads. I have the system-wide per-user limits for nproc and nofile >>> >>> set to 8192, far more than I need. The entire system shows 618 >>> >>> threads/processes in use, which is a lot less than I expected to see. >>> >>> Thanks, >>> >>> Shawn
