john stultz <johnstul@xxxxxxxxxx> writes: > > Further using lockstat I was able to isolate it the contention down to > the journal j_state_lock, and then adding some lock owner tracking, I > was able to see that the lock owners were almost always in > start_this_handle, and jbd2_journal_stop when we saw contention (with > the freq breakdown being about 55% in jbd2_journal_stop and 45% in > start_this_handle). FWIW we've been also seeing this on larger systems without RT. The journal locks are the number one contention in some workloads. So it's not just a RT problem. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- 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
