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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
