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https://issues.apache.org/jira/browse/CLOUDSTACK-9068?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15030512#comment-15030512
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ASF subversion and git services commented on CLOUDSTACK-9068:
-------------------------------------------------------------
Commit 48df255f71e9938cc9e0879cbc60d9a0a778d95a in cloudstack's branch
refs/heads/4.6 from [~nitin.maharana]
[ https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=48df255 ]
CLOUDSTACK-9068: Listing Port Forwarding Rules take too much time to load
For setting the width of each data item for each row of Port Forwarding rules,
it was processing all rules.
Basically for each data item, it was searching in all rules, which is
un-necessary.
If there are N-Rules, It was processing N-times.
Now, it only processes one time by taking all N-rules at a time.
The previous solution was of O(NxN). Now its changed to O(N).
> Listing Port Forwarding Rules take too much time to load
> --------------------------------------------------------
>
> Key: CLOUDSTACK-9068
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-9068
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Reporter: Nitin Kumar Maharana
>
> ISSUE
> ==================
> The performance of listPortForwardingRules slows down dramatically as the
> number of rules for an IP increases. If there are 100 rules for an IP and it
> takes over a minute to respond.
> REPRODUCE STEPS
> ==================
> 1) Create many port forwarding rules (75-100) for a particular IP.
> 2) View the port forwarding rules for the IP in the UI or directly with the
> listPortForwardingRules API command.
> 3) Notice the slowness.
> EXPECTED BEHAVIOR
> ==================
> listPortForwardingRules should always respond in a reasonable time.
> ACTUAL BEHAVIOR
> ==================
> listPortForwardingRules responds very slowly even with less than 100 rules
> configured.
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