Thanks for your information, but I don't think it is my case.My cluster don't
have any ssd.
2017-12-21
lin.yunfan
发件人：Denes Dolhay <de...@denkesys.com>
发送时间：2017-12-18 06:41
主题：Re: [ceph-users] [Luminous 12.2.2] Cluster peformance drops after certain
point of time
收件人："ceph-
主题：Re: [ceph-users] [Luminous 12.2.2] Cluster peformance drops after certain
point of time
收件人："ceph-users"<ceph-users@lists.ceph.com>
抄送："shadow_lin"<shadow_...@163.com>
I am testing luminous 12.2.2 and find a strange behavior of my cluster.
Check your block.db us
I am testing luminous 12.2.2 and find a strange behavior of my cluster.
Check your block.db usage. Luminous 12.2.2 is affected
http://tracker.ceph.com/issues/22264
[root@ceph-osd0]# ceph daemon osd.46 perf dump | jq '.bluefs' | grep -E
'(db|slow)'
"db_total_bytes": 30064762880,
Hi,
This is just a tip, I do not know if this actually applies to you, but
some ssds are decreasing their write throughput on purpose so they do
not wear out the cells before the warranty period is over.
Denes.
On 12/17/2017 06:45 PM, shadow_lin wrote:
Hi All,
I am testing luminous
Hi All,
I am testing luminous 12.2.2 and find a strange behavior of my cluster.
I was testing my cluster throughput by using fio on a mounted rbd with
follow fio parameters:
fio -directory=fiotest -direct=1 -thread -rw=write -ioengine=libaio
-size=200G -group_reporting -bs=1m
