https://bugzilla.kernel.org/show_bug.cgi?id=86471 --- Comment #5 from Markus Königshaus <m.koenigshaus@xxxxxx> --- Hello Theodore, I really wait a long time and I have the kernel dropped all Caches with /proc/sys/vm/drop_caches, so I do not thing, there are left buffered writes from mysqld. I can reproduce that behavior, before mysql shutdown I get 14 MB/s, after I get 400 kB/s with dd. I will try to compile blktrace for our system later, not enough time for that now. Can blktrace show me how often the writeback - mechanism writes the cache back to e.mmc - card? Markus -- You are receiving this mail because: You are watching the assignee of the bug.-- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
