[jira] [Updated] (OAK-4882) Bottleneck in the asynchronous persistent cache
[ https://issues.apache.org/jira/browse/OAK-4882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tomek Rękawek updated OAK-4882: --- Labels: candidate_oak_1_2 (was: ) > Bottleneck in the asynchronous persistent cache > --- > > Key: OAK-4882 > URL: https://issues.apache.org/jira/browse/OAK-4882 > Project: Jackrabbit Oak > Issue Type: Bug > Components: cache, documentmk >Affects Versions: 1.5.10, 1.4.8 >Reporter: Tomek Rękawek >Assignee: Tomek Rękawek > Labels: candidate_oak_1_2 > Fix For: 1.6, 1.5.13, 1.4.10 > > Attachments: OAK-4882.patch > > > The class responsible for accepting new cache operations which will be > handled asynchronously is > [CacheActionDispatcher|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java]. > In case of a high load, when the queue is full (=1024 entries), the > [add()|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L86] > method removes the oldest 256 entries. However, we can't afford losing the > updates (as it may result in having stale entries in the cache), so all the > removed entries are compacted into one big invalidate action. > The compaction action > ([CacheActionDispatcher#cleanTheQueue|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L97]) > still holds the lock taken in add() method, so threads which tries to add > something to the queue have to wait until cleanTheQueue() ends. > Maybe we can optimise the CacheActionDispatcher#add->cleanTheQueue part, so > it won't hold the lock for the whole time. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (OAK-4882) Bottleneck in the asynchronous persistent cache
[ https://issues.apache.org/jira/browse/OAK-4882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tomek Rękawek updated OAK-4882: --- Fix Version/s: 1.4.10 > Bottleneck in the asynchronous persistent cache > --- > > Key: OAK-4882 > URL: https://issues.apache.org/jira/browse/OAK-4882 > Project: Jackrabbit Oak > Issue Type: Bug > Components: cache, documentmk >Affects Versions: 1.5.10, 1.4.8 >Reporter: Tomek Rękawek >Assignee: Tomek Rękawek > Fix For: 1.6, 1.5.13, 1.4.10 > > Attachments: OAK-4882.patch > > > The class responsible for accepting new cache operations which will be > handled asynchronously is > [CacheActionDispatcher|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java]. > In case of a high load, when the queue is full (=1024 entries), the > [add()|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L86] > method removes the oldest 256 entries. However, we can't afford losing the > updates (as it may result in having stale entries in the cache), so all the > removed entries are compacted into one big invalidate action. > The compaction action > ([CacheActionDispatcher#cleanTheQueue|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L97]) > still holds the lock taken in add() method, so threads which tries to add > something to the queue have to wait until cleanTheQueue() ends. > Maybe we can optimise the CacheActionDispatcher#add->cleanTheQueue part, so > it won't hold the lock for the whole time. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (OAK-4882) Bottleneck in the asynchronous persistent cache
[ https://issues.apache.org/jira/browse/OAK-4882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tomek Rękawek updated OAK-4882: --- Fix Version/s: 1.5.14 > Bottleneck in the asynchronous persistent cache > --- > > Key: OAK-4882 > URL: https://issues.apache.org/jira/browse/OAK-4882 > Project: Jackrabbit Oak > Issue Type: Bug > Components: cache, documentmk >Affects Versions: 1.5.10, 1.4.8 >Reporter: Tomek Rękawek >Assignee: Tomek Rękawek > Fix For: 1.6, 1.5.13, 1.5.14 > > Attachments: OAK-4882.patch > > > The class responsible for accepting new cache operations which will be > handled asynchronously is > [CacheActionDispatcher|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java]. > In case of a high load, when the queue is full (=1024 entries), the > [add()|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L86] > method removes the oldest 256 entries. However, we can't afford losing the > updates (as it may result in having stale entries in the cache), so all the > removed entries are compacted into one big invalidate action. > The compaction action > ([CacheActionDispatcher#cleanTheQueue|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L97]) > still holds the lock taken in add() method, so threads which tries to add > something to the queue have to wait until cleanTheQueue() ends. > Maybe we can optimise the CacheActionDispatcher#add->cleanTheQueue part, so > it won't hold the lock for the whole time. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (OAK-4882) Bottleneck in the asynchronous persistent cache
[ https://issues.apache.org/jira/browse/OAK-4882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tomek Rękawek updated OAK-4882: --- Fix Version/s: 1.5.13 > Bottleneck in the asynchronous persistent cache > --- > > Key: OAK-4882 > URL: https://issues.apache.org/jira/browse/OAK-4882 > Project: Jackrabbit Oak > Issue Type: Bug > Components: cache, documentmk >Affects Versions: 1.5.10, 1.4.8 >Reporter: Tomek Rękawek >Assignee: Tomek Rękawek > Fix For: 1.6, 1.5.13 > > Attachments: OAK-4882.patch > > > The class responsible for accepting new cache operations which will be > handled asynchronously is > [CacheActionDispatcher|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java]. > In case of a high load, when the queue is full (=1024 entries), the > [add()|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L86] > method removes the oldest 256 entries. However, we can't afford losing the > updates (as it may result in having stale entries in the cache), so all the > removed entries are compacted into one big invalidate action. > The compaction action > ([CacheActionDispatcher#cleanTheQueue|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L97]) > still holds the lock taken in add() method, so threads which tries to add > something to the queue have to wait until cleanTheQueue() ends. > Maybe we can optimise the CacheActionDispatcher#add->cleanTheQueue part, so > it won't hold the lock for the whole time. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
[jira] [Updated] (OAK-4882) Bottleneck in the asynchronous persistent cache
[ https://issues.apache.org/jira/browse/OAK-4882?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Tomek Rękawek updated OAK-4882: --- Attachment: OAK-4882.patch > Bottleneck in the asynchronous persistent cache > --- > > Key: OAK-4882 > URL: https://issues.apache.org/jira/browse/OAK-4882 > Project: Jackrabbit Oak > Issue Type: Bug > Components: cache, documentmk >Affects Versions: 1.5.10, 1.4.8 >Reporter: Tomek Rękawek >Assignee: Tomek Rękawek > Fix For: 1.6 > > Attachments: OAK-4882.patch > > > The class responsible for accepting new cache operations which will be > handled asynchronously is > [CacheActionDispatcher|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java]. > In case of a high load, when the queue is full (=1024 entries), the > [add()|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L86] > method removes the oldest 256 entries. However, we can't afford losing the > updates (as it may result in having stale entries in the cache), so all the > removed entries are compacted into one big invalidate action. > The compaction action > ([CacheActionDispatcher#cleanTheQueue|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/document/persistentCache/async/CacheActionDispatcher.java#L97]) > still holds the lock taken in add() method, so threads which tries to add > something to the queue have to wait until cleanTheQueue() ends. > Maybe we can optimise the CacheActionDispatcher#add->cleanTheQueue part, so > it won't hold the lock for the whole time. -- This message was sent by Atlassian JIRA (v6.3.4#6332)
