Try increasing btree_scan_ratelimit? On Tue, Jan 20, 2015 at 5:24 PM, Stephen R. van den Berg <srb@xxxxxxx> wrote: > I have: > 16GB RAM > 16GB SSD swap > 5 x 6TB HDD bcache backing storage > 2 x 490GB SSD bcache cache (Crucial M550, 4KB block, 2M bucket size) > writeback and trim enabled on bcache. > I used the latestbcache tools from git. > > On the backing storage, I created a BTRFS using nossd and notrim. > > Now, whenever I boot, I end up with exactly 4 bcache_writebac > processes pegged at 99 or 100% CPU. This is on an octocore cpu. > top shows it as 50% system time. The four processes are marked as R, > but I cannot trace them. > > Even after waiting for several minutes, the cpu load does not come down. > The mounted volume simply seems to work, though. > > Any ideas? > -- > Stephen. > -- > To unsubscribe from this list: send the line "unsubscribe linux-bcache" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
