Project

General

Profile

Actions
Copy link

Bug #63933

open

osd_memory_target_autotune not working properly

Added by hoan nv 4 months ago. Updated 4 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:

0%

Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
Ceph - v17.2.6
ceph-qa-suite:
Pull request ID:
Crash signature (v1):
Crash signature (v2):

Description

I have a cluster ceph running on 17.2.6 version.

Some config on my cluster.

ceph config get osd osd_memory_target_autotune

true

ceph config get mgr mgr/cephadm/autotune_memory_target_ratio

0.700000

ceph config get osd.0 osd_memory_target

26497139538 ~ 24GB

But actually on my server , no osd can use more than 4GB memory

ps -ef | grep osd.0

167      2967139 2967127  0  2023 ?        1-00:05:24 /usr/bin/ceph-osd -n osd.0 -f --setuser ceph --setgroup ceph --default-log-to-file=false --default-log-to-journald=true --default-log-to-stderr=false

top -p 2967139

2967139 167       20   0 5504284   3.7g  33960 S   0.3   0.7   1445:24 ceph-osd

podman exec -it <osd-0-id> /bin/bash
ceph daemon /var/run/ceph/ceph-osd.0.asok config show | grep osd_memory_target

   "osd_memory_target": "4294967296",
   "osd_memory_target_autotune": "true",
   "osd_memory_target_cgroup_limit_ratio": "0.800000",

What woring on my config?
How i can workarround? Disable autotune and set manually ?

Thanks.

Actions
Copy link
 #1

Updated by hoan nv 4 months ago

I tried manually set osd_memory_target :

ceph config set osd.0 osd_memory_target_autotune false
ceph config set osd.0 osd_memory_target 12G

then show top -p 2967139

PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                                                                                                              
2967139 167       20   0 8274924   7.2g  34836 S   0.0   1.4   1452:49 ceph-osd

Actions
Copy link

Also available in: Atom PDF