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Posted to users@httpd.apache.org by "Chen, Yongcheng" <Yo...@aed-sicad.de> on 2015/02/02 13:38:51 UTC

[users@httpd] load balancer byrequest algorithm

Hi everybody,

I'm testing now the apache load balancer. And I configured my apache server for testing the example from apache document (http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html):

worker

a

b

lbfactor

70

30



lbstatus

-30

30

lbstatus

40

-40

lbstatus

10

-10

lbstatus

-20

20

lbstatus

-50

50

lbstatus

20

-20

lbstatus

-10

10

lbstatus

-40

40

lbstatus

30

-30

lbstatus

0

0

(repeat)

My configuration was:

    <Proxy balancer://ServerCluster>
      BalancerMember http://vh-srv01:8080 min=1 max=50 loadfactor=70 route=vh-srv01
      BalancerMember http://vh-srv02:8080 min=1 max=50 loadfactor=30 route=vh-srv02
</Proxy>

And I used also the setting: "lbmethod=byrequests"

I expected such a schedule: "a b a a a b a a b a"
However in the real test, I got "a a b a a b a a a b".

Can somebody explain what is the problem?

Best Regards



Re: [users@httpd] load balancer byrequest algorithm

Posted by Jim Jagielski <ji...@jaguNET.com>.
I would not expect a specific pattern (or schedule), per se, but rather
an overall trend or statistical average.

> On Feb 2, 2015, at 7:38 AM, Chen, Yongcheng <Yo...@aed-sicad.de> wrote:
> 
> Hi everybody,
>  
> I’m testing now the apache load balancer. And I configured my apache server for testing the example from apache document (http://httpd.apache.org/docs/2.2/mod/mod_proxy_balancer.html):
>  
> worker
> a
> b
> lbfactor
> 70
> 30
>  
> lbstatus
> -30
> 30
> lbstatus
> 40
> -40
> lbstatus
> 10
> -10
> lbstatus
> -20
> 20
> lbstatus
> -50
> 50
> lbstatus
> 20
> -20
> lbstatus
> -10
> 10
> lbstatus
> -40
> 40
> lbstatus
> 30
> -30
> lbstatus
> 0
> 0
> (repeat)
>  
> My configuration was:
>     <Proxy balancer://ServerCluster>
>       BalancerMember http://vh-srv01:8080 min=1 max=50 loadfactor=70 route=vh-srv01
>       BalancerMember http://vh-srv02:8080 min=1 max=50 loadfactor=30 route=vh-srv02
> </Proxy>
>  
> And I used also the setting: “lbmethod=byrequests”
>  
> I expected such a schedule: “a b a a a b a a b a”
> However in the real test, I got “a a b a a b a a a b”.
>  
> Can somebody explain what is the problem?
>  
> Best Regards


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