What can you see in vmstat/dstat ? Le 5 janv. 2012 11:58, "R. Verlangen" <ro...@us2.nl> a écrit :
> Hi there, > > I'm running a cassandra 0.8.6 cluster with 2 nodes (in 2 DC's), RF = 2. > Actual data on the nodes is only 1GB. Disk latency < 1ms. Disk throughput ~ > 0.4MB/s. OS load always below 1 (on a 8 core machine with 16GB ram). > > When I'm running my writes against the cluster with cl = ONE all reads > appear to be faster then the writes. > > Average write speed = 1600us/operation > Average read speed = 200us/operation > > I'm really wondering why this is the case. Anyone got a clue? > > With kind regards, > Robin >
