[jira] [Updated] (KUDU-972) cache should track memory overhead
[ https://issues.apache.org/jira/browse/KUDU-972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Todd Lipcon updated KUDU-972: - Resolution: Fixed Fix Version/s: 1.8.0 Status: Resolved (was: In Review) > cache should track memory overhead > -- > > Key: KUDU-972 > URL: https://issues.apache.org/jira/browse/KUDU-972 > Project: Kudu > Issue Type: Bug > Components: cfile, util >Affects Versions: Private Beta >Reporter: Todd Lipcon >Assignee: Todd Lipcon >Priority: Major > Fix For: 1.8.0 > > > Currently the cache only accounts for the cache _values_ in the memtracker. > Each key seems to have 88 or so bytes of memory usage as well (potentially > rounded up due to allocation overhead, etc). > For the DRAM cache, this is still a ~700:1 ratio assuming 64kb block sizes, > but for PMEM, where we expect hundreds of GBs of block cache, a 700:1 ratio > may turn out to be somewhat substantial. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (KUDU-972) cache should track memory overhead
[ https://issues.apache.org/jira/browse/KUDU-972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Todd Lipcon updated KUDU-972: - Status: In Review (was: Open) > cache should track memory overhead > -- > > Key: KUDU-972 > URL: https://issues.apache.org/jira/browse/KUDU-972 > Project: Kudu > Issue Type: Bug > Components: cfile, util >Affects Versions: Private Beta >Reporter: Todd Lipcon >Assignee: Todd Lipcon >Priority: Major > > Currently the cache only accounts for the cache _values_ in the memtracker. > Each key seems to have 88 or so bytes of memory usage as well (potentially > rounded up due to allocation overhead, etc). > For the DRAM cache, this is still a ~700:1 ratio assuming 64kb block sizes, > but for PMEM, where we expect hundreds of GBs of block cache, a 700:1 ratio > may turn out to be somewhat substantial. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
[jira] [Updated] (KUDU-972) cache should track memory overhead
[ https://issues.apache.org/jira/browse/KUDU-972?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Grant Henke updated KUDU-972: - Target Version/s: (was: 1.5.0) > cache should track memory overhead > -- > > Key: KUDU-972 > URL: https://issues.apache.org/jira/browse/KUDU-972 > Project: Kudu > Issue Type: Bug > Components: cfile, util >Affects Versions: Private Beta >Reporter: Todd Lipcon >Priority: Major > > Currently the cache only accounts for the cache _values_ in the memtracker. > Each key seems to have 88 or so bytes of memory usage as well (potentially > rounded up due to allocation overhead, etc). > For the DRAM cache, this is still a ~700:1 ratio assuming 64kb block sizes, > but for PMEM, where we expect hundreds of GBs of block cache, a 700:1 ratio > may turn out to be somewhat substantial. -- This message was sent by Atlassian JIRA (v7.6.3#76005)
