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Posted to commits@cassandra.apache.org by "Boopalan (Jira)" <ji...@apache.org> on 2020/04/20 13:42:00 UTC
[jira] [Created] (CASSANDRA-15742) Cassandra-Stress : Performance
degraded with Cassandra on Single node cluster
Boopalan created CASSANDRA-15742:
-------------------------------------
Summary: Cassandra-Stress : Performance degraded with Cassandra on Single node cluster
Key: CASSANDRA-15742
URL: https://issues.apache.org/jira/browse/CASSANDRA-15742
Project: Cassandra
Issue Type: Bug
Reporter: Boopalan
Steps to recreate:
# I have created RAID 0 with 8 NVMe disks and created a ext4 filesystem (800GB volume)
# Replace all default storage /var/lib/cassandra to " /mnt" in cassandra.yaml file.
# Run cassandra-stress tool for performance benchmarking, am getting lower op/s than Aerospike NoSQL.
SSD Drive is capable of
Read Throughput (max MiB/s, 128KiB) : 3.1K
Read Throughput (max MiB/s, 128KiB) : 1.8K
Read IOPS (max, Rnd 4KiB) : 467K
Read Throughput (max, Rnd 4KiB) :65K
{noformat}
root@cassandra-master:~# cassandra-stress write n=1000000 -rate threads=64
******************** Stress Settings ********************
Command:
Type: write
Count: 1,000,000
No Warmup: false
Consistency Level: LOCAL_ONE
Target Uncertainty: not applicable
Key Size (bytes): 10
Counter Increment Distibution: add=fixed(1)
Rate:
Auto: false
Thread Count: 64
OpsPer Sec: 0
Population:
Sequence: 1..1000000
Order: ARBITRARY
Wrap: true
Insert:
Revisits: Uniform: min=1,max=1000000
Visits: Fixed: key=1
Row Population Ratio: Ratio: divisor=1.000000;delegate=Fixed: key=1
Batch Type: not batching
Columns:
Max Columns Per Key: 5
Column Names: [C0, C1, C2, C3, C4]
Comparator: AsciiType
Timestamp: null
Variable Column Count: false
Slice: false
Size Distribution: Fixed: key=34
Count Distribution: Fixed: key=5
Errors:
Ignore: false
Tries: 10
Log:
No Summary: false
No Settings: false
File: null
Interval Millis: 1000
Level: NORMAL
Mode:
API: JAVA_DRIVER_NATIVE
Connection Style: CQL_PREPARED
CQL Version: CQL3
Protocol Version: V4
Username: null
Password: null
Auth Provide Class: null
Max Pending Per Connection: 128
Connections Per Host: 8
Compression: NONE
Node:
Nodes: [localhost]
Is White List: false
Datacenter: null
Schema:
Keyspace: keyspace1
Replication Strategy: org.apache.cassandra.locator.SimpleStrategy
Replication Strategy Pptions: {replication_factor=1}
Table Compression: null
Table Compaction Strategy: null
Table Compaction Strategy Options: {}
Transport:
factory=org.apache.cassandra.thrift.TFramedTransportFactory; truststore=null; truststore-password=null; keystore=null; keystore-password=null; ssl-protocol=TLS; ssl-alg=SunX509; store-type=JKS; ssl-ciphers=TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA;
Port:
Native Port: 9042
Thrift Port: 9160
JMX Port: 7199
Send To Daemon:
*not set*
Graph:
File: null
Revision: unknown
Title: null
Operation: WRITE
TokenRange:
Wrap: false
Split Factor: 1
WARN 19:01:48,641 You listed localhost/0:0:0:0:0:0:0:1:9042 in your contact points, but it wasn't found in the control host's system.peers at startup
Connected to cluster: Test Cluster, max pending requests per connection 128, max connections per host 8
Datatacenter: datacenter1; Host: localhost/127.0.0.1; Rack: rack1
Created keyspaces. Sleeping 1s for propagation.
Sleeping 2s...
Warming up WRITE with 50000 iterations...
Running WRITE with 64 threads for 1000000 iteration
type total ops, op/s, pk/s, row/s, mean, med, .95, .99, .999, max, time, stderr, errors, gc: #, max ms, sum ms, sdv ms, mb
total, 120763, 120763, 120763, 120763, 0.5, 0.4, 1.0, 2.1, 24.9, 29.1, 1.0, 0.00000, 0, 1, 60, 60, 0, 1499
total, 254564, 133801, 133801, 133801, 0.5, 0.3, 1.0, 1.8, 8.7, 64.5, 2.0, 0.04931, 0, 0, 0, 0, 0, 0
total, 363914, 109350, 109350, 109350, 0.6, 0.3, 0.9, 1.7, 20.9, 254.7, 3.0, 0.04089, 0, 1, 251, 251, 0, 1470
total, 514894, 150980, 150980, 150980, 0.4, 0.3, 0.8, 1.6, 4.9, 21.8, 4.0, 0.03878, 0, 1, 107, 107, 0, 1466
total, 665446, 150552, 150552, 150552, 0.4, 0.3, 0.8, 1.6, 4.8, 109.4, 5.0, 0.04428, 0, 0, 0, 0, 0, 0
total, 788349, 122903, 122903, 122903, 0.5, 0.3, 1.0, 1.7, 27.5, 110.4, 6.0, 0.03855, 0, 1, 106, 106, 0, 1480
total, 915193, 126844, 126844, 126844, 0.5, 0.3, 1.0, 1.7, 3.8, 109.4, 7.0, 0.03331, 0, 1, 107, 107, 0, 1477
total, 1000000, 128730, 128730, 128730, 0.5, 0.4, 1.0, 1.6, 4.3, 20.6, 7.7, 0.03118, 0, 0, 0, 0, 0, 0
Results:
Op rate : 130,569 op/s [WRITE: 130,569 op/s]
Partition rate : 130,569 pk/s [WRITE: 130,569 pk/s]
Row rate : 130,569 row/s [WRITE: 130,569 row/s]
Latency mean : 0.5 ms [WRITE: 0.5 ms]
Latency median : 0.3 ms [WRITE: 0.3 ms]
Latency 95th percentile : 0.9 ms [WRITE: 0.9 ms]
Latency 99th percentile : 1.7 ms [WRITE: 1.7 ms]
Latency 99.9th percentile : 6.3 ms [WRITE: 6.3 ms]
Latency max : 254.7 ms [WRITE: 254.7 ms]
Total partitions : 1,000,000 [WRITE: 1,000,000]
Total errors : 0 [WRITE: 0]
Total GC count : 5
Total GC memory : 7.219 GiB
Total GC time : 0.6 seconds
Avg GC time : 126.2 ms
StdDev GC time : 65.0 ms
Total operation time : 00:00:07 {noformat}
Please let me know if you need more information
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