There's an initial implementation sitting around in a branch (https://github.com/athanatos/ceph/tree/sjust/wip-dmclock-librados-rebase), but it still needs a lot of work. In short, it's not ready in current master. -Sam On Thu, Jul 30, 2020 at 2:45 PM Eric Ivancich <ivancich@xxxxxxxxxx> wrote: > > > On Jun 19, 2020, at 12:59 AM, qjpqzb@xxxxxxxxx wrote: > > > > Hi, > > > > I am trying to use CEPH dmclock to see how it works for QoS control. Especially, I want to set “osd_op_queue” as “mclock_client” to config different [r, w, l] for each client. The CEPH version I use is nautilus 14.2.9. > > That feature was never fully realized and did not support setting reservation, weight, and limit for each client. At best it simply kept a separate queue for each client so each client’s tags would increment independently thereby promoting some “fairness" between clients. > > And as I look at master, it appears that the mclock scheduler was re-worked by Sam Just and that feature is no longer there. > > > I noticed that in "OSD CONFIG REFERENCE" section of CEPH documentation, it states that "the mClock based ClientQueue (mclock_client) also incorporates the client identifier in order to promote fairness between clients.", so I believe librados can support per-client configurations right now. I wonder how I can set up the CEPH configuration to config different (r, w, l) for different clients using such “client identifier"? Thanks. > > I’d started an effort to allow client configuration via librados but needed to move onto other rgw-centered tasks. Sam was looking at that code but I don’t know where he went with it. > > Best, > > Eric > _______________________________________________ > Dev mailing list -- dev@xxxxxxx > To unsubscribe send an email to dev-leave@xxxxxxx _______________________________________________ Dev mailing list -- dev@xxxxxxx To unsubscribe send an email to dev-leave@xxxxxxx
