Immediately after updating OptimumCache to 0.3-3, the load on the server roughly doubled. It has been running about 50% to 100% higher than normal. Normal is 0.7 average and it has been averaging > 1 since the update.
Also, on lvetop, I see most users showing 1% to +/- 20% in the SPEED column. Normally, SPEED shows 0% for most users.
I/0, MEM and CPU are all up significantly for user 'sync.'