cassandra gc issue

[Peng Xiao]

All,


We noticed that the response time jumps very high sometime. The following is 
from the cassandra gc log.


   [Eden: 760.0M(760.0M)->0.0B(11.2G) Survivors: 264.0M->96.0M Heap: 
7657.7M(20.0G)->6893.3M(20.0G)]
Heap after GC invocations=43481 (full 0):
 garbage-first heap   total 20971520K, used 7058765K [0x00000002c0000000, 
0x00000002c0805000, 0x00000007c0000000)
  region size 8192K, 12 young (98304K), 12 survivors (98304K)
 Metaspace       used 37426K, capacity 37810K, committed 38144K, reserved 
1083392K
  class space    used 3930K, capacity 4025K, committed 4096K, reserved 1048576K



Could anyone please advise?


Thanks,
Peng Xiao