from which release can we get this？ 发自我的 iPhone
在 2013-5-14，8:36，"Sage Weil" <[email protected]> 写道： > Hi Jim- > > You mentioned the other day your concerns about the uniformity of the PG > and data distribution. There are several ways to attack it (including > increasing the number of PGs), but one that we haven't tested much yet is > the 'reweight-by-utilization' function in the monitor. > > The idea is that there will always be some statistical variance in the > distribution and a non-zero probability of having outlier OSDs with too > many PG. We adjust for this by taking nodes that are substantially above > the mean down by some adjustment factor in an automated way. > > ceph osd reweight-by-utilization MIN > > where MIN is the minimum relative utilization at which we will start > adjusting down. It is always > 100 (100% of the mean), and defaults to > 120. After it adjusts the reweights, you should see the result in 'ceph > osd tree' output > > Have you played with this at all on your cluster? I'd be very interested > in how well this does/does not improve things for you. > > Thanks! > sage > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html
