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https://issues.apache.org/jira/browse/CASSANDRA-15175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16875587#comment-16875587
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Joseph Lynch commented on CASSANDRA-15175:
------------------------------------------
[~norman] Yes, I think we have enough evidence that the latency regression was
probably not Netty TLS (although I am somewhat surprised CPU time with tcnative
is about the same as pre-netty jdk TLS) and probably in how we're using it
instead. It is possible that the default cipher choice for netty on Java 8 may
want to be revised, or at least noted somewhere in the documentation that Java
8 has a performance limitation with GCM ciphers?
> Evaluate 200 node, compression=on, encryption=all
> -------------------------------------------------
>
> Key: CASSANDRA-15175
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15175
> Project: Cassandra
> Issue Type: Sub-task
> Components: Test/benchmark
> Reporter: Joseph Lynch
> Assignee: Joseph Lynch
> Priority: Normal
> Attachments: 30x_14400cRPS-14400cWPS.svg,
> 30x_LQ_21600cRPS-14400cWPS.svg, ShortbufferExceptions.png,
> odd_netty_jdk_tls_cpu_usage.png, trunk_14400cRPS-14400cWPS.svg,
> trunk_187000cRPS-14400cWPS.svg, trunk_187kcRPS_14kcWPS.png,
> trunk_22000cRPS-14400cWPS-jdk.svg, trunk_22000cRPS-14400cWPS-openssl.svg,
> trunk_220kcRPS_14kcWPS.png, trunk_252kcRPS-14kcWPS.png,
> trunk_93500cRPS-14400cWPS.svg, trunk_LQ_14400cRPS-14400cWPS.svg,
> trunk_LQ_21600cRPS-14400cWPS.svg, trunk_Q_21600cRPS-7200cWPS.svg,
> trunk_allocation_Q_21k_cRPS.svg, trunk_vs_30x_125kcRPS_14kcWPS.png,
> trunk_vs_30x_14kRPS_14kcWPS_load.png, trunk_vs_30x_14kcRPS_14kcWPS.png,
> trunk_vs_30x_14kcRPS_14kcWPS_schedstat_delays.png,
> trunk_vs_30x_156kcRPS_14kcWPS.png, trunk_vs_30x_24kcRPS_14kcWPS.png,
> trunk_vs_30x_24kcRPS_14kcWPS_load.png, trunk_vs_30x_31kcRPS_14kcWPS.png,
> trunk_vs_30x_62kcRPS_14kcWPS.png, trunk_vs_30x_93kcRPS_14kcWPS.png,
> trunk_vs_30x_LQ_14kcRPS_14kcWPS.png, trunk_vs_30x_LQ_21kcRPS_14kcWPS.png,
> trunk_vs_30x_LQ_64kcRPS_14kcWPS.png, trunk_vs_30x_LQ_jdk_summary.png,
> trunk_vs_30x_LQ_openssl_21kcRPS_14kcWPS.png,
> trunk_vs_30x_LQ_tcnative_summary.png, trunk_vs_30x_Q_21kcRPS_7200cWPS.png,
> trunk_vs_30x_Q_36kcRPS_7200cWPS.png, trunk_vs_30x_summary.png
>
>
> Tracks evaluating a 192 node cluster with compression and encryption on.
> Test setup at (reproduced below)
> [https://docs.google.com/spreadsheets/d/1Vq_wC2q-rcG7UWim-t2leZZ4GgcuAjSREMFbG0QGy20/edit#gid=1336583053]
>
> |Test Setup| |
> |Baseline|3.0.19
> @d7d00036|
> |Candiate|trunk
> @abb0e177|
> | | |
> |Workload| |
> |Write size|4kb random|
> |Read size|4kb random|
> |Per Node Data|110GiB|
> |Generator|ndbench|
> |Key Distribution|Uniform|
> |SSTable Compr|Off|
> |Internode TLS|On (jdk)|
> |Internode Compr|On|
> |Compaction|LCS (320 MiB)|
> |Repair|Off|
> | | |
> |Hardware| |
> |Instance Type|i3.xlarge|
> |Deployment|96 us-east-1, 96 eu-west-1|
> |Region node count|96|
> | | |
> |OS Settings| |
> |IO scheduler|kyber|
> |Net qdisc|tc-fq|
> |readahead|32kb|
> |Java Version|OpenJDK 1.8.0_202 (Zulu)|
> | | |
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