>> I've recently set up a software RAID5 + bcache. >> >> I'm using kernel 3.5.2 merged with bcache master branch. I'm quite >> happy with the performance but >> there is an important issue. I can't drop caches. Writing any number >> to /proc/sys/vm/drop_caches >> makes the system hung. >> >> Furthermore, so far I've been unable to curb bcache's memory >> consumption using the available >> sysctl knobs. >> >> Is this problem known? > > No I didn't know about that - thanks, I'll look into it.
Thanks :) > Just out of curiousity, what are you doing? drop_caches isn't something > you want to use in normal operation... Yeah, not normal operation, but this machine has 8 GB of ram and nearly 7 were being used by caches. I tried to launch a virtual machine and I couldn't. Seeing the state the memory was in, I went off to drop the caches, and... hang. -- Javier Marcet <[email protected]> -- 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
