On 2020-01-09 14:58, vitalif@xxxxxxxxxx wrote:
I watched some of their crimson osd mettings on youtube and they
discussed something similar...
Could you please share the link?
however I thought they also said that
crimson-osd eats less CPU cores during that test. Did it eat less CPU
in your test?
Hm, I can't prove even that. So here is the output of pidstat while
rbd.fio is running, 4k block only:
legacy-osd
[roman@dell ~]$ pidstat 1 -p 109930
Linux 5.3.13-arch1-1 (dell) 01/09/2020 _x86_64_ (8 CPU)
03:51:49 PM UID PID %usr %system %guest %wait %CPU
CPU Command
03:51:51 PM 1000 109930 14.00 8.00 0.00 0.00 22.00
1 ceph-osd
03:51:52 PM 1000 109930 40.00 19.00 0.00 0.00 59.00
1 ceph-osd
03:51:53 PM 1000 109930 44.00 17.00 0.00 0.00 61.00
1 ceph-osd
03:51:54 PM 1000 109930 40.00 20.00 0.00 0.00 60.00
1 ceph-osd
03:51:55 PM 1000 109930 39.00 18.00 0.00 0.00 57.00
1 ceph-osd
03:51:56 PM 1000 109930 41.00 20.00 0.00 0.00 61.00
1 ceph-osd
03:51:57 PM 1000 109930 41.00 15.00 0.00 0.00 56.00
1 ceph-osd
03:51:58 PM 1000 109930 42.00 16.00 0.00 0.00 58.00
1 ceph-osd
03:51:59 PM 1000 109930 42.00 15.00 0.00 0.00 57.00
1 ceph-osd
03:52:00 PM 1000 109930 43.00 15.00 0.00 0.00 58.00
1 ceph-osd
03:52:01 PM 1000 109930 24.00 12.00 0.00 0.00 36.00
1 ceph-osd
crimson-osd
pidstat 1 -p 108141
Linux 5.3.13-arch1-1 (dell) 01/09/2020 _x86_64_ (8 CPU)
03:47:50 PM UID PID %usr %system %guest %wait %CPU
CPU Command
03:47:55 PM 1000 108141 67.00 11.00 0.00 0.00 78.00
0 crimson-osd
03:47:56 PM 1000 108141 79.00 12.00 0.00 0.00 91.00
0 crimson-osd
03:47:57 PM 1000 108141 81.00 9.00 0.00 0.00 90.00
0 crimson-osd
03:47:58 PM 1000 108141 78.00 12.00 0.00 0.00 90.00
0 crimson-osd
03:47:59 PM 1000 108141 78.00 12.00 0.00 1.00 90.00
0 crimson-osd
03:48:00 PM 1000 108141 78.00 13.00 0.00 0.00 91.00
0 crimson-osd
03:48:01 PM 1000 108141 79.00 13.00 0.00 0.00 92.00
0 crimson-osd
03:48:02 PM 1000 108141 78.00 12.00 0.00 0.00 90.00
0 crimson-osd
03:48:03 PM 1000 108141 77.00 11.00 0.00 0.00 88.00
0 crimson-osd
03:48:04 PM 1000 108141 79.00 12.00 0.00 1.00 91.00
0 crimson-osd
--
Roman
