[jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
[ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17152139#comment-17152139 ] Aleksey Yeschenko commented on CASSANDRA-9739: -- Sure > Migrate counter-cache to be fully off-heap > -- > > Key: CASSANDRA-9739 > URL: https://issues.apache.org/jira/browse/CASSANDRA-9739 > Project: Cassandra > Issue Type: Sub-task > Components: Legacy/Core >Reporter: Robert Stupp >Assignee: Robert Stupp >Priority: Normal > Fix For: 4.x > > > Counter cache still uses a concurrent map on-heap. This could go to off-heap > and feels doable now after CASSANDRA-8099. > Evaluation should be done in advance based on a POC to prove that pure > off-heap counter cache buys a performance and/or gc-pressure improvement. > In theory, elimination of on-heap management of the map should buy us some > benefit. -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
[jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
[ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17152061#comment-17152061 ] Robert Stupp commented on CASSANDRA-9739: - [~aleksey] do you mind if i close this one? > Migrate counter-cache to be fully off-heap > -- > > Key: CASSANDRA-9739 > URL: https://issues.apache.org/jira/browse/CASSANDRA-9739 > Project: Cassandra > Issue Type: Sub-task > Components: Legacy/Core >Reporter: Robert Stupp >Assignee: Robert Stupp >Priority: Normal > Fix For: 4.x > > > Counter cache still uses a concurrent map on-heap. This could go to off-heap > and feels doable now after CASSANDRA-8099. > Evaluation should be done in advance based on a POC to prove that pure > off-heap counter cache buys a performance and/or gc-pressure improvement. > In theory, elimination of on-heap management of the map should buy us some > benefit. -- This message was sent by Atlassian Jira (v8.3.4#803005) - To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org
[jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
[ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14615402#comment-14615402 ] Robert Stupp commented on CASSANDRA-9739: - That was the thing with _optimize counter read path_, right? Migrate counter-cache to be fully off-heap -- Key: CASSANDRA-9739 URL: https://issues.apache.org/jira/browse/CASSANDRA-9739 Project: Cassandra Issue Type: Sub-task Reporter: Robert Stupp Fix For: 3.x Counter cache still uses a concurrent map on-heap. This could go to off-heap and feels doable now after CASSANDRA-8099. Evaluation should be done in advance based on a POC to prove that pure off-heap counter cache buys a performance and/or gc-pressure improvement. In theory, elimination of on-heap management of the map should buy us some benefit. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
[ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14615366#comment-14615366 ] Jonathan Ellis commented on CASSANDRA-9739: --- Our long term plan may involve getting rid of counter cache entirely. /cc [~iamaleksey] Migrate counter-cache to be fully off-heap -- Key: CASSANDRA-9739 URL: https://issues.apache.org/jira/browse/CASSANDRA-9739 Project: Cassandra Issue Type: Sub-task Reporter: Robert Stupp Fix For: 3.x Counter cache still uses a concurrent map on-heap. This could go to off-heap and feels doable now after CASSANDRA-8099. Evaluation should be done in advance based on a POC to prove that pure off-heap counter cache buys a performance and/or gc-pressure improvement. In theory, elimination of on-heap management of the map should buy us some benefit. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
[ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14615368#comment-14615368 ] Aleksey Yeschenko commented on CASSANDRA-9739: -- Yes, that's exactly the plan. Once CASSANDRA-6506 is in. Migrate counter-cache to be fully off-heap -- Key: CASSANDRA-9739 URL: https://issues.apache.org/jira/browse/CASSANDRA-9739 Project: Cassandra Issue Type: Sub-task Reporter: Robert Stupp Fix For: 3.x Counter cache still uses a concurrent map on-heap. This could go to off-heap and feels doable now after CASSANDRA-8099. Evaluation should be done in advance based on a POC to prove that pure off-heap counter cache buys a performance and/or gc-pressure improvement. In theory, elimination of on-heap management of the map should buy us some benefit. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Commented] (CASSANDRA-9739) Migrate counter-cache to be fully off-heap
[ https://issues.apache.org/jira/browse/CASSANDRA-9739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14615745#comment-14615745 ] Aleksey Yeschenko commented on CASSANDRA-9739: -- Right. Migrate counter-cache to be fully off-heap -- Key: CASSANDRA-9739 URL: https://issues.apache.org/jira/browse/CASSANDRA-9739 Project: Cassandra Issue Type: Sub-task Reporter: Robert Stupp Fix For: 3.x Counter cache still uses a concurrent map on-heap. This could go to off-heap and feels doable now after CASSANDRA-8099. Evaluation should be done in advance based on a POC to prove that pure off-heap counter cache buys a performance and/or gc-pressure improvement. In theory, elimination of on-heap management of the map should buy us some benefit. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
