Hi, I was testing the multithreaded compactions and with 2x6 cores (24 with HT) it does seem a bit crazy with 24 compactions running concurrently. It is probably not very good in terms of random I/O.
As such, I think I agree with the argument in 2191 that there should be a config option for this. Probably a default that is dynamic with 1 thread per column family +2 or 3 thread for parallel compactions outside of that could be good. Any other opinions? I guess the compaction thread pool should also show up in tpstats? Regards, Terje
