If the amount of remaining time for compaction keeps going up, does this point to an overloaded node or an un-tuned node?
On Thu, May 30, 2013 at 3:10 PM, Robert Coli <rc...@eventbrite.com> wrote: > On Wed, May 29, 2013 at 2:38 PM, Darren Smythe <darren1...@gmail.com> > wrote: > > Were using the latest JNA and separate ephemeral drives for commit log > and > > data directories. > > (as a note..) > > Per nickmbailey, testing shows that there is little/no benefit to > separating commit log and data dirs on virtualized disk (or SSD), > because the win from this practice comes when the head doesn't move > between appends to the commit log. Because the head must be assumed > to always be moving on shared disk (and because there is no head to > move on SSD), you'd be better off with a one-disk-larger ephemeral > stripe for both data and commit log. > > =Rob >
