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Posted to dev@activemq.apache.org by "Andy (JIRA)" <ji...@apache.org> on 2010/07/19 21:52:51 UTC
[jira] Created: (AMQ-2837) Slow KahaDB
Slow KahaDB
-----------
Key: AMQ-2837
URL: https://issues.apache.org/activemq/browse/AMQ-2837
Project: ActiveMQ
Issue Type: Bug
Components: Broker
Affects Versions: 5.3.2
Environment: Linux
Reporter: Andy
I'm using KahaDB for persistence with the following configuration:
<?xml version="1.0" encoding="UTF-8"?>
<beans>
<broker brokerName="test-broker"
persistent="true"
useJmx="true"
useShutdownHook="false"
deleteAllMessagesOnStartup="false"
xmlns="http://activemq.apache.org/schema/core">
<persistenceAdapter>
<kahaDB directory="activemq-data" journalMaxFileLength="32mb" indexCacheSize="10000000
"/>
</persistenceAdapter>
<transportConnectors>
<transportConnector uri="tcp://localhost:61616"/>
</transportConnectors>
<destinationPolicy>
<policyMap>
<policyEntries>
<policyEntry topic=">">
<subscriptionRecoveryPolicy>
<timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
</subscriptionRecoveryPolicy>
</policyEntry>
</policyEntries>
</policyMap>
</destinationPolicy>
</broker>
</beans>
I've some durable consumers. The broker is showing many "Slow KahaDB access" log entries.
Any suggestions?
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
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RE: [jira] Resolved: (AMQ-2837) Slow KahaDB
Posted by "Davis, Dorothea" <Do...@homedepot.com>.
In the link it has the following statement... but how do I check my disk speed and how do I determine what exactly to set the "time=" to? What's the actual formula?
" You can configure a threshold used to log the message by using
-Dorg.apache.activemq.store.kahadb.LOG_SLOW_ACCESS_TIME=1500
system property and adjust it to your disk speed. "
Thanks for your help!
Dorothea Davis
The Home Depot
(w) (770) 433-8211 x17476
(c) (404) 314-0352
dorothea_davis@homedepot.com
-----Original Message-----
From: Rob Davies (JIRA) [mailto:jira@apache.org]
Sent: Monday, July 19, 2010 8:15 PM
To: dev@activemq.apache.org
Subject: [jira] Resolved: (AMQ-2837) Slow KahaDB
[ https://issues.apache.org/activemq/browse/AMQ-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rob Davies resolved AMQ-2837.
-----------------------------
Assignee: Rob Davies
Resolution: Working as Designed
> Slow KahaDB
> -----------
>
> Key: AMQ-2837
> URL: https://issues.apache.org/activemq/browse/AMQ-2837
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.3.2
> Environment: Linux
> Reporter: Andy
> Assignee: Rob Davies
>
> I'm using KahaDB for persistence with the following configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <beans>
> <broker brokerName="test-broker"
> persistent="true"
> useJmx="true"
> useShutdownHook="false"
> deleteAllMessagesOnStartup="false"
> xmlns="http://activemq.apache.org/schema/core">
> <persistenceAdapter>
> <kahaDB directory="activemq-data" journalMaxFileLength="32mb" indexCacheSize="10000000
> "/>
> </persistenceAdapter>
> <transportConnectors>
> <transportConnector uri="tcp://localhost:61616"/>
> </transportConnectors>
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry topic=">">
> <subscriptionRecoveryPolicy>
> <timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
> </subscriptionRecoveryPolicy>
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> </broker>
> </beans>
> I've some durable consumers. The broker is showing many "Slow KahaDB access" log entries.
> Any suggestions?
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
> INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
> INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
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[jira] Issue Comment Edited: (AMQ-2837) Slow KahaDB
Posted by "Gary Tully (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=60822#action_60822 ]
Gary Tully edited comment on AMQ-2837 at 10/11/10 3:28 PM:
-----------------------------------------------------------
There is a utility in the distribution that can help you determine relative disk speed as experienced by the journal writer thread:
{code}java -classpath lib/kahadb-<version>.jar org.apache.kahadb.util.DiskBenchmark{code}
As to the value of the log threshold, the calculation is a simple time difference before and after the journal and index update, there is no complicated formula and it really is there as a development aid. So pick a large value if you have a slow disk and don't want to see the log entry. Otherwise you will be regularly reminded of the fact.
was (Author: gtully):
There is a utility in the distribution that can help you determine relative disk speed as experienced by the journal writer thread:
java -classpath lib/kahadb-<version>.jar org.apache.kahadb.util.DiskBenchmark
As to the value of the log threshold, the calculation is a simple time difference before and after the journal and index update, there is no complicated formula and it really is there as a development aid. So pick a large value if you have a slow disk and don't want to see the log entry. Otherwise you will be regularly reminded of the fact.
> Slow KahaDB
> -----------
>
> Key: AMQ-2837
> URL: https://issues.apache.org/activemq/browse/AMQ-2837
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.3.2
> Environment: Linux
> Reporter: Andy
> Assignee: Rob Davies
>
> I'm using KahaDB for persistence with the following configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <beans>
> <broker brokerName="test-broker"
> persistent="true"
> useJmx="true"
> useShutdownHook="false"
> deleteAllMessagesOnStartup="false"
> xmlns="http://activemq.apache.org/schema/core">
> <persistenceAdapter>
> <kahaDB directory="activemq-data" journalMaxFileLength="32mb" indexCacheSize="10000000
> "/>
> </persistenceAdapter>
> <transportConnectors>
> <transportConnector uri="tcp://localhost:61616"/>
> </transportConnectors>
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry topic=">">
> <subscriptionRecoveryPolicy>
> <timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
> </subscriptionRecoveryPolicy>
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> </broker>
> </beans>
> I've some durable consumers. The broker is showing many "Slow KahaDB access" log entries.
> Any suggestions?
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
> INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
> INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
--
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[jira] Commented: (AMQ-2837) Slow KahaDB
Posted by "Gary Tully (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=60822#action_60822 ]
Gary Tully commented on AMQ-2837:
---------------------------------
There is a utility in the distribution that can help you determine relative disk speed as experienced by the journal writer thread:
java -classpath lib/kahadb-<version>.jar org.apache.kahadb.util.DiskBenchmark
As to the value of the log threshold, the calculation is a simple time difference before and after the journal and index update, there is no complicated formula and it really is there as a development aid. So pick a large value if you have a slow disk and don't want to see the log entry. Otherwise you will be regularly reminded of the fact.
> Slow KahaDB
> -----------
>
> Key: AMQ-2837
> URL: https://issues.apache.org/activemq/browse/AMQ-2837
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.3.2
> Environment: Linux
> Reporter: Andy
> Assignee: Rob Davies
>
> I'm using KahaDB for persistence with the following configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <beans>
> <broker brokerName="test-broker"
> persistent="true"
> useJmx="true"
> useShutdownHook="false"
> deleteAllMessagesOnStartup="false"
> xmlns="http://activemq.apache.org/schema/core">
> <persistenceAdapter>
> <kahaDB directory="activemq-data" journalMaxFileLength="32mb" indexCacheSize="10000000
> "/>
> </persistenceAdapter>
> <transportConnectors>
> <transportConnector uri="tcp://localhost:61616"/>
> </transportConnectors>
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry topic=">">
> <subscriptionRecoveryPolicy>
> <timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
> </subscriptionRecoveryPolicy>
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> </broker>
> </beans>
> I've some durable consumers. The broker is showing many "Slow KahaDB access" log entries.
> Any suggestions?
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
> INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
> INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
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[jira] Commented: (AMQ-2837) Slow KahaDB
Posted by "Sebastien Rodriguez (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=60769#action_60769 ]
Sebastien Rodriguez commented on AMQ-2837:
------------------------------------------
This is actually not an issue.
Check
http://activemq.apache.org/kahadb.html (see the bottom: Slow KahaDB access log messages)
You can tune the value with your hard drive speed.
> Slow KahaDB
> -----------
>
> Key: AMQ-2837
> URL: https://issues.apache.org/activemq/browse/AMQ-2837
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.3.2
> Environment: Linux
> Reporter: Andy
>
> I'm using KahaDB for persistence with the following configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <beans>
> <broker brokerName="test-broker"
> persistent="true"
> useJmx="true"
> useShutdownHook="false"
> deleteAllMessagesOnStartup="false"
> xmlns="http://activemq.apache.org/schema/core">
> <persistenceAdapter>
> <kahaDB directory="activemq-data" journalMaxFileLength="32mb" indexCacheSize="10000000
> "/>
> </persistenceAdapter>
> <transportConnectors>
> <transportConnector uri="tcp://localhost:61616"/>
> </transportConnectors>
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry topic=">">
> <subscriptionRecoveryPolicy>
> <timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
> </subscriptionRecoveryPolicy>
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> </broker>
> </beans>
> I've some durable consumers. The broker is showing many "Slow KahaDB access" log entries.
> Any suggestions?
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
> INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
> INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
--
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[jira] Resolved: (AMQ-2837) Slow KahaDB
Posted by "Rob Davies (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/activemq/browse/AMQ-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rob Davies resolved AMQ-2837.
-----------------------------
Assignee: Rob Davies
Resolution: Working as Designed
> Slow KahaDB
> -----------
>
> Key: AMQ-2837
> URL: https://issues.apache.org/activemq/browse/AMQ-2837
> Project: ActiveMQ
> Issue Type: Bug
> Components: Broker
> Affects Versions: 5.3.2
> Environment: Linux
> Reporter: Andy
> Assignee: Rob Davies
>
> I'm using KahaDB for persistence with the following configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <beans>
> <broker brokerName="test-broker"
> persistent="true"
> useJmx="true"
> useShutdownHook="false"
> deleteAllMessagesOnStartup="false"
> xmlns="http://activemq.apache.org/schema/core">
> <persistenceAdapter>
> <kahaDB directory="activemq-data" journalMaxFileLength="32mb" indexCacheSize="10000000
> "/>
> </persistenceAdapter>
> <transportConnectors>
> <transportConnector uri="tcp://localhost:61616"/>
> </transportConnectors>
> <destinationPolicy>
> <policyMap>
> <policyEntries>
> <policyEntry topic=">">
> <subscriptionRecoveryPolicy>
> <timedSubscriptionRecoveryPolicy recoverDuration="3600000"/>
> </subscriptionRecoveryPolicy>
> </policyEntry>
> </policyEntries>
> </policyMap>
> </destinationPolicy>
> </broker>
> </beans>
> I've some durable consumers. The broker is showing many "Slow KahaDB access" log entries.
> Any suggestions?
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1248 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1560 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1227 ms
> INFO | Slow KahaDB access: Journal append took: 1480 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 5 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 13 ms, Index update took 1348 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1590 ms
> INFO | Slow KahaDB access: Journal append took: 1327 ms, Index update took 0 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1263 ms
> INFO | Slow KahaDB access: Journal append took: 1 ms, Index update took 1276 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1277 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1312 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1593 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1608 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1302 ms
> INFO | Slow KahaDB access: Journal append took: 3 ms, Index update took 1317 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1318 ms
> INFO | Slow KahaDB access: Journal append took: 2 ms, Index update took 1316 ms
> INFO | Slow KahaDB access: Journal append took: 1318 ms, Index update took 1 ms
> INFO | Slow KahaDB access: Journal append took: 0 ms, Index update took 1296 ms
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