[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Blake Eggleston updated CASSANDRA-15388:
Source Control Link:
https://github.com/apache/cassandra/commit/c9e40277f0389a773b21d4310a85a8c761932d61
Resolution: Fixed
Status: Resolved (was: Ready to Commit)
thanks, committed to trunk as
[c9e40277f0389a773b21d4310a85a8c761932d61|https://github.com/apache/cassandra/commit/c9e40277f0389a773b21d4310a85a8c761932d61]
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
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[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Blake Eggleston updated CASSANDRA-15388:
Status: Ready to Commit (was: Changes Suggested)
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
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[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
David Capwell updated CASSANDRA-15388:
--
Status: Changes Suggested (was: Review In Progress)
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
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[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
David Capwell updated CASSANDRA-15388:
--
Reviewers: Benedict Elliott Smith, David Capwell, David Capwell (was:
Benedict Elliott Smith, David Capwell)
Benedict Elliott Smith, David Capwell, David Capwell (was:
Benedict Elliott Smith)
Status: Review In Progress (was: Patch Available)
Personally would love if test-memory target could go away in favor of
testclasslist so it matches the rest of CI. There is only one test right now
so not a big issue, but something that should change if "enough" tests get
added.
If you don't want to add this to circle ci in this, can you file a follow up
JIRA for Circle CI?
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
--
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[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Blake Eggleston updated CASSANDRA-15388:
Reviewers: Benedict Elliott Smith
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
--
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[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Blake Eggleston updated CASSANDRA-15388:
Test and Documentation Plan: circle
Status: Patch Available (was: Open)
[4.0|https://github.com/bdeggleston/cassandra/tree/15388]
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
--
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[jira] [Updated] (CASSANDRA-15388) Add compaction allocation measurement test to support compaction gc optimization.
[
https://issues.apache.org/jira/browse/CASSANDRA-15388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Blake Eggleston updated CASSANDRA-15388:
Change Category: Performance
Complexity: Normal
Fix Version/s: 4.0
Status: Open (was: Triage Needed)
> Add compaction allocation measurement test to support compaction gc
> optimization.
> --
>
> Key: CASSANDRA-15388
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15388
> Project: Cassandra
> Issue Type: Sub-task
> Components: Local/Compaction
>Reporter: Blake Eggleston
>Assignee: Blake Eggleston
>Priority: Normal
> Fix For: 4.0
>
>
> This adds a test that is able to quickly and accurately measure the effect of
> potential gc optimizations against a wide range of (synthetic) compaction
> workloads. This test accurately measures allocation rates from 16 workloads
> in less that 2 minutes.
> This test uses google’s {{java-allocation-instrumenter}} agent to measure the
> workloads. Measurements using this agent are very accurate and pretty
> repeatable from run to run, with most variance being negligible (1-2 bytes
> per partition), although workloads with larger but fewer partitions vary a
> bit more (still less that 0.03%).
> The thinking behind this patch is that with compaction, we’re generally
> interested in the memory allocated per partition, since garbage scales more
> or less linearly with the number of partitions compacted. So measuring
> allocation from a small number of partitions that otherwise represent real
> world use cases is a good enough approximation.
> In addition to helping with compaction optimizations, this test could be used
> as a template for future optimization work. This pattern could also be used
> to set allocation limits on workloads/operations and fail CI if the
> allocation behavior changes past some threshold.
--
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