Zakhar,
I will take this matter to the Leadership Team. I will write to you within the week.
Zac Dover
Head of Upstream Documentation
Ceph Foundation
------- Original Message -------
On Wednesday, October 11th, 2023 at 7:10 PM, Zakhar Kirpichenko <zakhar(a)gmail.com>
wrote:
Hi!
Not sure this question is a good fit for this mailing list, but the subject appears to be
undocumented, and I'm not getting any response from ceph-users.
Monitors in our 16.2.14 cluster appear to quite often run "manual compaction"
tasks, usually more than once per minute. During each compaction the monitor process
writes approximately 500-600 MB of data to disk over a short period of time. These writes
add up to tens of gigabytes per hour and hundreds of gigabytes per day, reducing .
Monitor rocksdb and compaction options are default:
"mon_compact_on_bootstrap": "false",
"mon_compact_on_start": "false",
"mon_compact_on_trim": "true",
"mon_rocksdb_options":
"write_buffer_size=33554432,compression=kNoCompression,level_compaction_dynamic_level_bytes=true",
Where can I find some documentation regarding rocksdb usage by monitors? How can I
ascertain where this is expected behavior, or whether this is something I can adjust?
I would appreciate your advice and/or direction towards the relevant documentation.
Best regards,
Zakhar