Cassandra
This page describes the Optimization Pack for the component type Cassandra.
Metrics
read_rate
ops/s
Read queries per second
read_response_time_p99
milliseconds
99th percentile of read queries response time
read_response_time_avg
milliseconds
Average response time of read queries
write_rate
ops/s
Write queries per second
write_response_time_p99
milliseconds
99th percentile of write queries response time
read_response_time_max
milliseconds
Maximum response time of read queries
total_rate
ops/s
Total queries per second
write_response_time_avg
milliseconds
Average response time of write queries
write_response_time_max
milliseconds
Maximum response time of write queries
read_response_time_p90
milliseconds
90th percentile of read queries response time
write_response_time_p90
milliseconds
90th percentile of write queries response time
Parameters
cassandra_compactionStrategy
categorical
SizeTieredCompactionStrategy
LeveledCompactionStrategy, SizeTieredCompactionStrategy, TimeWindowCompactionStrategy
yes
Compaction strategy in use
cassandra_concurrentReads
integer
32
2 → 128
yes
Concurrent Reads
cassandra_concurrentWrites
integer
32
2 → 128
yes
Concurrent Writes
cassandra_fileCacheSizeInMb
integer
megabytes
512
128 → 4096
yes
Total memory to use for SSTable-reading buffers
cassandra_memtableCleanupThreshold
real
0.11
0.01 → 0.99
yes
Ratio used for automatic memtable flush
cassandra_concurrentCompactors
integer
2
1 → 32
yes
Sets the number of concurrent compaction processes allowed to run simultaneously on a node
cassandra_commitlog_compression
categorical
NoCompressor
NoCompressor, LZ4Compressor, SnappyCompressor, DeflateCompressor
Sets the compression of commit log
cassandra_commitlog_segment_size_in_mb
integer
megabytes
32
8 → 32
Sets the segment size of commit log
cassandra_compaction_throughput_mb_per_sec
integer
megabytes/s
16
0 → 999
Sets the number of throughput for compaction
cassandra_commitlog_sync_period_in_ms
integer
milliseconds
10000
1 → 25000
Sets the sync period of commit log
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