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Key: GLASSFISH-3660
Type: Bug Bug
Status: Open Open
Priority: Minor Minor
Assignee: lwhite
Reporter: gfbugbridge
Votes: 0
Watchers: 0
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glassfish

<BT6595609>In-memory replication is not scaling beyond 4 instances

Created: 20/Sep/07 11:34 AM   Updated: 06/Mar/12 09:57 PM
Component/s: failover
Affects Version/s: 9.1peur1
Fix Version/s: not determined

Time Tracking:
Not Specified

Environment:

Operating System: Solaris
Platform: Sun


Issuezilla Id: 3,660
Status Whiteboard:

91ur1Approved

Tags:
Participants: gfbugbridge, lwhite and Tom Mueller


 Description  « Hide

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Inside SWAN :http://swsblweb1.central.sun.com:8080/CrPrint?id=6595609
Outside SWAN :http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6595609
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Description In-memory replication is not scaling beyond 4 instances. We are achieving good scalability from 2 to 4 instances. After that we are not seeing the similar scalability to 6 instances.
2 instances : 796.64 Hits/Sec
4 instances : 1461.09 Hits/Sec
6 instances : 1739.91 Hits/Sec

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Description In order to determine where the scalability issues exist it is necessary to report what the scalability numbers are for these number of instances with the same load balancer, etc. with no memory replication. Until these numbers are provided it is premature to make conclusions about memory replication scalability or to know where to look for root cause.
Please update the bug.

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Justification Priority changed from [] to [3-Medium]In-memory replication is not XXXXXX 2007-08-21 23:05:05 GMT

Priority changed from [3-Medium] to [4-Low]
This is not part of exit criteria hence not a release stopper so lowering priority to p4. We will nevertheless look into the scaling XXXXXX 2007-08-21 23:18:12 GMT

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gfbugbridge added a comment - 20/Sep/07 12:48 PM

*********READ-ONLY Data from Bugtraq*********************
Inside SWAN :http://swsblweb1.central.sun.com:8080/CrPrint?id=6595609
Outside SWAN :http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6595609
**********READ-ONLY Data from Bugtraq Ends********
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Description In-memory replication is not scaling beyond 4 instances. We are achieving good scalability from 2 to 4 instances. After that we are not seeing the similar scalability to 6 instances.
2 instances : 796.64 Hits/Sec
4 instances : 1461.09 Hits/Sec
6 instances : 1739.91 Hits/Sec

**********READ-ONLY Data from Bugtraq Ends********
*********READ-ONLY Data from Bugtraq*********************
Description In order to determine where the scalability issues exist it is necessary to report what the scalability numbers are for these number of instances with the same load balancer, etc. with no memory replication. Until these numbers are provided it is premature to make conclusions about memory replication scalability or to know where to look for root cause.
Please update the bug.

**********READ-ONLY Data from Bugtraq Ends********
*********READ-ONLY Data from Bugtraq*********************
Justification Priority changed from [] to [3-Medium]In-memory replication is not XXXXXX 2007-08-21 23:05:05 GMT

Priority changed from [3-Medium] to [4-Low]
This is not part of exit criteria hence not a release stopper so lowering priority to p4. We will nevertheless look into the scaling XXXXXX 2007-08-21 23:18:12 GMT

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Tom Mueller added a comment - 06/Mar/12 09:57 PM

Bulk update to change fix version to "not determined" for all issues still open but with a fix version for a released version.