Danny Rankevich has posted comments on this change.

Change subject: engine: bad performance in storage_domains.getQueryableId() 
(#769615)
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Patch Set 5: (1 inline comment)

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File 
backend/manager/modules/common/src/main/java/org/ovirt/engine/core/common/businessentities/storage_domains.java
Line 283:         // using '+' instead of String Format to prevent overhead, 
since this method is used heavily during UI rendering
A '+' operator in Java between two Strings is always compiled as a call to 
StringBuilder.append().

So if there is only one statement of concatenation, the result is the same.

When you concatenate the same String over several statements, using a single 
instance of a StringBuilder would be better than creating a new StringBuilder 
instance for each statement, which is what the compiler does.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I2699668e938774a68c011626336f0e4d54f532af
Gerrit-PatchSet: 5
Gerrit-Project: ovirt-engine
Gerrit-Branch: master
Gerrit-Owner: Danny Rankevich <danny....@redhat.com>
Gerrit-Reviewer: Danny Rankevich <danny....@redhat.com>
Gerrit-Reviewer: Doron Fediuck <dfedi...@redhat.com>
Gerrit-Reviewer: Einav Cohen <eco...@redhat.com>
Gerrit-Reviewer: Yair Zaslavsky <yzasl...@redhat.com>
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