Hi Philip,
I'm not sure if we're talking about the same thing but I was also
confused when I didn't see 100% OSD drive utilization during my first
RBD write benchmark. Since then I collect all my confusion here
https://yourcmc.ru/wiki/Ceph_performance :)
100% RBD utilization means that
"turn that knob" up?
- Original Message -
From: "Wido den Hollander"
To: "Philip Brown" , "ceph-users"
Sent: Tuesday, January 14, 2020 12:42:48 AM
Subject: Re: [ceph-users] where does 100% RBD utilization come from?
The util is calculated
, "ceph-users"
Sent: Tuesday, January 14, 2020 12:42:48 AM
Subject: Re: [ceph-users] where does 100% RBD utilization come from?
The util is calculated based on average waits, see:
https://coderwall.com/p/utc42q/understanding-iostat
Just improving performance isn't just turning a kno
On 1/10/20 7:43 PM, Philip Brown wrote:
> Surprisingly, a google search didnt seem to find the answer on this, so guess
> I should ask here:
>
> what determines if an rdb is "100% busy"?
>
> I have some backend OSDs, and an iSCSI gateway, serving out some RBDs.
>
> iostat on the gateway
