[SunRay-Users] Failover group load balancing on servers with lots of cores

[P.S.M.Swamiji]

On 3/16/2010 3:04 AM, William Yang wrote:
> Are CPU frequency and count the only things the load balance algorithm
> considers?
It also considers number of sessions running/idle...
>   That concerns me a bit especially since with recent processors,
> increasing speed no longer necessarily means increasing performance.  Can
> the LB algorithm be manually tweaked if necessary?
>    
I don't think it can be configurable other than completely disabling 
load balancing.

Thanks
P.S.M.Swamiji

Note: These are my personal opinions, nothing to do with my employer

> William
>
>    
>> -----Original Message-----
>> From: sunray-users-bounces at filibeto.org [mailto:sunray-users-
>> bounces at filibeto.org] On Behalf Of P.S.M.Swamiji
>> Sent: Monday, March 15, 2010 7:51 AM
>> To: SunRay-Users mailing list
>> Subject: Re: [SunRay-Users] Failover group load balancing on servers with
>> lots of cores
>>
>> Is it on Linux?.
>> If so you might be hitting 6747147. Make sure to have the latest SRSS
>> 4.1 Patch .
>> It's fixed in 4.1_patch-03 or later.
>>
>> [6747147 Group Manager LB algorithm  reads insufficient data from
>> /proc/cpuinfo]
>>
>> Thanks
>> P.S.M.Swamiji
>>
>> Note: These are my personal opinions, nothing to do with my employer
>>
>> On 3/15/2010 4:44 PM, Sammy Atmadja wrote:
>>      
>>> Hi all,
>>>
>>> We're running a SRSS 4.1 failover group consisting of 3 servers with 2-4
>>>        
>> cores
>>      
>>> each. Last weekend we expanded the failover group with two new 12 core
>>>        
>> servers
>>      
>>> (HP Proliant DL385g6). This morning we noticed that the new servers
>>>        
>> aren't
>>      
>>> getting assigned any new sessions by the loadbalancing algorithm. Using
>>> wireshark on the sunray interface i'm seeing that the packages
>>>        
>> multicasted to
>>      
>>> 224.101.101.101 port 7009 contain the following string:
>>>
>>> cpus=4 clock=1800 (on one of the 4-core, 1.8GHz servers)
>>>
>>> and
>>>
>>> cpus=0 clock=0 (on the 12-core, 2.6GHz  servers)
>>>
>>> Which doesn't seem right.
>>>
>>> Any suggestions on how to proceed?
>>>
>>> Sammy Atmadja
>>> Transtrend BV
>>> This is a message from the E-MAIL server of Transtrend B.V.
>>>
>>> The information contained in this communication is confidential and
>>> intended solely for the use of the individual or entity to whom it is
>>> addressed. You should not copy, disclose, or distribute this
>>>        
>> communication
>>      
>>> without the authority of Transtrend B.V. Transtrend B.V. is neither
>>>        
>> liable
>>      
>>> for the proper and complete transmission of the information contained in
>>> this communication nor for any delay in its receipt. Transtrend B.V.
>>>        
>> does
>>      
>>> not guarantee that the integrity of this communication has been
>>>        
>> maintained
>>      
>>> nor that the communication is free of viruses, interceptions or
>>> interference.
>>>
>>> If you are not the intended recipient of this communication please
>>>        
>> return
>>      
>>> the communication to the sender and delete and destroy all copies.
>>>
>>> De informatie verzonden in dit e-mailbericht is vertrouwelijk en
>>> uitsluitend bestemd voor de geadresseerde. Openbaarmaking,
>>> vermenigvuldiging, verspreiding en/of verstrekking van deze informatie
>>>        
>> aan
>>      
>>> derden is, behoudens voorafgaande schriftelijke toestemming van
>>>        
>> Transtrend
>>      
>>> B.V.  niet toegestaan. Transtrend B.V. staat niet in voor de juiste en
>>> volledige overbrenging van de inhoud van een verzonden e-mailbericht,
>>>        
>> noch
>>      
>>> voor tijdige ontvangst daarvan. Transtrend B.V. kan niet garanderen dat
>>>        
>> een
>>      
>>> verzonden e-mailbericht vrij is van virussen, noch dat e-mailberichten
>>> worden overgebracht zonder inbreuk of tussenkomst van onbevoegde derden.
>>>
>>> Indien bovenstaand e-mailbericht niet aan u is gericht, verzoeken wij u.
>>> vriendelijk doch dringend het e-mailbericht te retourneren aan de
>>>        
>> afzender
>>      
>>> en het origineel en eventuele kopieen te verwijderen en te vernietigen.
>>> _______________________________________________
>>> SunRay-Users mailing list
>>> SunRay-Users at filibeto.org
>>> http://www.filibeto.org/mailman/listinfo/sunray-users
>>>
>>>        
>> _______________________________________________
>> SunRay-Users mailing list
>> SunRay-Users at filibeto.org
>> http://www.filibeto.org/mailman/listinfo/sunray-users
>>      
> _______________________________________________
> SunRay-Users mailing list
> SunRay-Users at filibeto.org
> http://www.filibeto.org/mailman/listinfo/sunray-users
>