I am using the default 16MB when running repair. but the disk io is still quite high:
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util sdb 136.00 0.00 506.00 26.00 63430.00 5880.00 260.56 101.73 224.38 6.60 4462.62 1.88 100.00 Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await r_await w_await svctm %util sdb 58.50 21978.00 131.00 122.50 16226.00 52596.00 542.97 122.98 870.28 10.02 1790.24 3.94 100.00 the rkB/s and wKB/s are almost 60MB, did I misunderstand the meaning of compaction throttle? cassandra version is 0.8.6
