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https://issues.apache.org/jira/browse/VCL-1006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15832203#comment-15832203
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ASF subversion and git services commented on VCL-1006:
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Commit 1779664 from [~jfthomps] in branch 'vcl/trunk'
[ https://svn.apache.org/r1779664 ]

VCL-1006 - performance improvements for 2.5

privileges.php:
-added conditionals to skip configAdmin user privilege in several places in 
these functions: viewNodes, selectNode, and getUserPrivRowHTML
-changed uses of array_key_exists to isset in these functions: 
printUserPrivRow, getUserPrivRowHTML, getResourcePrivRowHTML, 
getNodePrivileges, getNodeCascadePrivileges, AJchangeUserPrivs, 
AJchangeUserGroupPrivs, AJsubmitAddUserGroupPriv, and AJsubmitAddResourcePriv
-reverted a few places that were mistakingly changed from in_array to isset in 
these functions: AJchangeResourcePrivs, AJsubmitAddUserPriv, 
AJsubmitAddUserGroupPriv, AJsubmitAddResourcePriv, and checkUserHasPriv
-modified AJchangeResourcePrivs: fixed issue preventing setting a resource 
attribute at a node where the same attribute was being blocked from being 
cascaded down

xmlrpcWrappers.php:
-changed uses of array_key_exists to isset in XMLRPCgetResourceGroupPrivs and 
_XMLRPCchangeResourceGroupPriv_sub

utils.php:
-removed places where subarrays were created by calling array() in these 
functions since it is unnecessary: getImages, getChildNodes, 
getResourceGroupMemberships, getResourceGroupMembers, findAvailableTimes
-changed uses of array_key_exists to isset in these functions: getImages, 
getServerProfiles, getServerProfileImages, getImageConnectMethods, 
getImageConnectMethodTexts, getProductionRevisionid, removeNoCheckout, 
getUserResources, getUserResourcesUp, addNodeUserResourcePrivs, 
addOwnedResources, addOwnedResourceGroups, getParentNodes, getChildNodes, 
getUserGroups, getResourceGroupMembers, getUserUnityID, checkUserHasPerm, 
findAvailableTimes, selectInputHTML, prettyDatetime, getMaintItemsForTimeTable, 
getNodeInfo, and sortKeepIndex
-changed uses of foreach(array_keys(...) as $) to foreach(... as $ => $tmp) in 
these functions: getUserResourcesDown, addNodeUserResourcePrivs
-modified getImageConnectMethods: split query to get all methods from a single 
query to a temporary table with 3 individual queries due to slowness caused by 
the OR's in the conditional of the "LEFT JOIN connectmethodmap"

> performance improvements for 2.5
> --------------------------------
>
>                 Key: VCL-1006
>                 URL: https://issues.apache.org/jira/browse/VCL-1006
>             Project: VCL
>          Issue Type: Improvement
>          Components: web gui (frontend)
>            Reporter: Josh Thompson
>             Fix For: 2.5
>
>
> This issue is to track performance improvements to the web code.



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