Hello. Great Information, I will keep in mind. Thank you :) Nguyen Huu Khoi On Thu, Nov 16, 2023 at 5:51 PM Janne Johansson <icepic.dz@xxxxxxxxx> wrote: > Den tors 16 nov. 2023 kl 08:43 skrev Nguyễn Hữu Khôi > <nguyenhuukhoinw@xxxxxxxxx>: > > > > Hello, > > Yes, I see it does not exceed RSS but I see in "ceph orch ps". it is > over > > target. Does Mem Use include cache, I am right? > > > > NAME HOST PORTS STATUS REFRESHED > > AGE MEM USE MEM LIM VERSION IMAGE ID CONTAINER ID > > > > osd.7 sg-osd01 running (3d) 8m ago > > 4w 4231M 4096M 17.2.6 90a2664234e1 922185643cb8 > > > btw as you said, I feel this value does not have much impact because if > we > > set 1 or 4GB. It still can consume much memory when they need more > memory, > > Don't forget that the tuneable part is only one type of memory > consumption and not ALL parts of the places where and OSD needs ram, > so the absolutely mandatory ram consumption is not covered by the > settings, only the "optional" part, which goes to caches and other > performance improving usages. > During recovery and startup and other events, the required usage can > and will spike, regardless of your memory usage settings. > > If recovery suddenly needs 20G, it would not stop recovery because you > set the limit to say, max 19G ram, it would try to use 20G to recover, > then go back to normal low usage and have as much as possible of the > given 19G as caches again. > > -- > May the most significant bit of your life be positive. > _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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