On Fri, May 05, 2017 at 09:24:32AM -0400, Matt McKinnon wrote: > > Too little information. Is IO happening at the same time? Is > > compression on? Deduplicated? Lots of subvolumes? SSD? What > > kind of workload and file size/distribution profile? > > Only write IO during the load spikes. No compression, no deduplication. 12 > volumes (including snapshots). Spinning disks. Medium workload; file sizes > are all over the map since this hold about 30 user home directories. > > Interestingly enough, the problems which had persisted for many weeks went > away when all snapshots were removed. btrfs-transaction spikes disappeared. > Memory usage went from 30G to under 2G. >
Were those snapshots served as backup? Could you please elaborate how you create snapshots? We could probably hammer out a testcase to improve the situation. Thanks, -liubo -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
