I mean the light weight processes (lwp) which were taking high cpu. I pulled the actual threads taking high cpu. full thread dump: *tdump.out* linux lwps: *high-cpu.out* top high cpu lwps mapped to thread nid: *high-cpu-dump.out (included threads taking more than 50% virtual core cpu)*
https://drive.google.com/drive/folders/1FsFb8l0u5ZV4qnO-tgqa91JPHqT0lCcR On Thu, Apr 11, 2019 at 1:03 PM Shawn Heisey <apa...@elyograg.org> wrote: > On 4/11/2019 2:21 AM, Hari Nakka wrote: > > Hi Erick, We upgraded JDK to 11. No improvement. Still seeing high cpu > > utilization randomly. > > Attached the full threaddump (tdump.out) and lwp utilization > (high-cpu.out) > > there were more than 30 threads (high-cpu-dump.out)taking high cpu. > > these are different threads. i couldn't find much looking at them. > > Can you take a look and see if there is any known condition that could > > be causing this. > > Maybe we need a prominent note on the "mailing lists" page about > attachments to the mailing list, saying something like the following: > > --- > Attachments rarely make it to the list. They are stripped by the > mailing list software. If you have files to share with the list, you'll > need to find another way to send them. File sharing websites usually > work well. > --- > > We didn't get any attachments from you. > > You said you included something called "lwp utilization" ... the only > lwp I have ever heard of is a perl module for HTTP, which would have > nothing at all to do with high CPU usage in Solr. > > Thread dumps are usually not helpful in diagnosing high CPU usage. They > contain zero information about which threads are consuming the most CPU. > > Thanks, > Shawn >
