> Please fix this regression the patch causes then or give some > fundamental arguments why we can't satisfy the two requirements > simultaneously: I just don't understand why it is necessary to cause a > regression in stacking/low memory support in order to provide the > performance boost in the way you desire. The two things ought to be > independent of each other. The old stacking relies on per device threads. Per device threads cannot be combined with per CPU threads, because that would lead to a thread explosion for large device counts. I thought I had handled stacking, but my implementation doesn't seem to fully work. Most likely it needs a fallback thread or using one of the available workqueues. > (And I remain sceptical about the suitability of the patch even with a > stack of just two or three layers as I don't see anything in the failed > tests that shows why similar failures couldn't in principle affect Yes most likely the problem happens with any stacking > 0. -Andi -- ak@xxxxxxxxxxxxxxx -- Speaking for myself only. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
