[SOLVED] "G1 Service Thread" filling gc.log

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trevorp
Posts: 12
Joined: Tue Dec 27, 2016 6:07 pm

[SOLVED] "G1 Service Thread" filling gc.log

Post by trevorp »

Our gc.log files are suddenly filling with the following messages. It's literally non-stop.

Code: Select all

[2022-09-12T15:08:35.136-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:35.136-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.236ms (cpu: 0.000ms)
[2022-09-12T15:08:35.436-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:35.436-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.248ms (cpu: 0.000ms)
[2022-09-12T15:08:35.513-0400] G1 Service Thread (Periodic GC Task) (run)
[2022-09-12T15:08:35.513-0400] G1 Service Thread (Periodic GC Task) (run) 0.053ms (cpu: 0.000ms)
[2022-09-12T15:08:35.736-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:35.737-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.221ms (cpu: 0.000ms)
[2022-09-12T15:08:36.037-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:36.037-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.216ms (cpu: 0.000ms)
[2022-09-12T15:08:36.337-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:36.337-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.314ms (cpu: 0.000ms)
[2022-09-12T15:08:36.514-0400] G1 Service Thread (Periodic GC Task) (run)
[2022-09-12T15:08:36.514-0400] G1 Service Thread (Periodic GC Task) (run) 0.057ms (cpu: 0.000ms)
[2022-09-12T15:08:36.638-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:36.638-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.224ms (cpu: 0.000ms)
[2022-09-12T15:08:36.938-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:36.938-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.226ms (cpu: 0.000ms)
[2022-09-12T15:08:37.238-0400] G1 Service Thread (Remembered Set Sampling Task) (run)
[2022-09-12T15:08:37.239-0400] G1 Service Thread (Remembered Set Sampling Task) (run) 0.218ms (cpu: 0.000ms)
[2022-09-12T15:08:37.514-0400] G1 Service Thread (Periodic GC Task) (run)
[2022-09-12T15:08:37.514-0400] G1 Service Thread (Periodic GC Task) (run) 0.065ms (cpu: 0.000ms)
We recently upgraded to [Release 8.8.15.GA.3869.UBUNTU16.64 UBUNTU16_64 FOSS edition, Patch 8.8.15_P33] if that helps any.
Any one have any ideas?
trevorp
Posts: 12
Joined: Tue Dec 27, 2016 6:07 pm

Re: "G1 Service Thread" filling gc.log

Post by trevorp »

No one else has or is seeing this?
ghen
Outstanding Member
Outstanding Member
Posts: 258
Joined: Thu May 12, 2016 1:56 pm
Location: Belgium
ZCS/ZD Version: 9.0.0

Re: "G1 Service Thread" filling gc.log

Post by ghen »

What's in your `zmlocalconfig mailboxd_java_options` ? You likely have something like "-Xlog:gc*=debug,safepoint=info:file=/opt/zimbra/log/gc.log" in there, you can change it to "gc*=info" (and restart mailboxd).
trevorp
Posts: 12
Joined: Tue Dec 27, 2016 6:07 pm

Re: "G1 Service Thread" filling gc.log

Post by trevorp »

Yeah, I have that exact option. Note, that I never added or change that option, and I'm the only one with admin access to that server. Could this have changed via an upgrade?
I'll change debug to info and let you know how it goes.

Update: changing the values as described above has dropped the logging to the file considerably. It's still growing, but nowhere at the pace it was previously. Thanks!
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