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Posted to users@httpd.apache.org by Gilles Ganault <gi...@free.fr> on 2008/09/02 23:53:02 UTC
[users@httpd] [A2/Load balancing] mod_proxy vs. dedicated box?
Hello
I'd like some feedback about using Apache's mod_proxy to provide load
balancing with other Apache2 servers vs. using a dedicated device.
At this point, our first Apache2 server, acting as load balancer, is
50% idle, while the other Apache2 server is 0% idle:
--- Apache #1 (includes load balancer to forward connections to Apache
#2)
top - 19:35:21 up 26 days, 2:21, 3 users, load average: 165.76,
163.97, 200.46
Tasks: 829 total, 155 running, 673 sleeping, 1 stopped, 0 zombie
Cpu(s): 36.3%us, 10.2%sy, 0.0%ni, 47.2%id, 5.1%wa, 0.1%hi, 1.0%si,
0.0%st
Mem: 2070172k total, 1978392k used, 91780k free, 48016k
buffers
Swap: 998376k total, 244336k used, 754040k free, 518996k
cached
--- Apache #2
top - 19:33:46 up 21 days, 3:23, 3 users, load average: 511.90,
468.51, 351.50
Tasks: 1325 total, 105 running, 1219 sleeping, 1 stopped, 0 zombie
Cpu(s): 28.5%us, 65.1%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.1%hi, 5.4%si,
0.0%st
Mem: 2061660k total, 2012144k used, 49516k free, 2084k
buffers
Swap: 922600k total, 430876k used, 491724k free, 104796k
cached
Any idea to explain this imbalance? Should we get better performance
with a dedicated box?
Thank you.
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[users@httpd] Re: [A2/Load balancing] mod_proxy vs. dedicated box?
Posted by Gilles Ganault <gi...@free.fr>.
On Wed, 03 Sep 2008 04:32:16 -0500, Ben Spencer
<be...@moody.edu> wrote:
>Dedicated device = ??
I was thinking of something like Packeteer, ie. not a regular PC
running *nix + Apache.
>What type of applications are running on server 1 & server 2? Sticky
>sessions being used?
At this point, we have one Apache acting both as web server, and load
balancer to two other Apache servers, a NAS to host static files (JPG,
etc.) and a MySQL server.
I was wondering if Apache's modules that handle load balancing offer
performance on par with dedicated load balancers.
Thank you.
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RE: [users@httpd] [A2/Load balancing] mod_proxy vs. dedicated box?
Posted by Ben Spencer <be...@moody.edu>.
Dedicated device = ??
What type of applications are running on server 1 & server 2? Sticky
sessions being used? Explain a little more of your configuration.
You should also be able to get a feeling for the distribution of the
requests by using balancer-manager
benji
Benji Spencer
System Administrator
Moody Bible Institute
Phone: 312-329-2288
Fax: 312-329-8961
> -----Original Message-----
> From: news [mailto:news@ger.gmane.org] On Behalf Of Gilles Ganault
> Sent: Tuesday, September 02, 2008 4:53 PM
> To: users@httpd.apache.org
> Subject: [users@httpd] [A2/Load balancing] mod_proxy vs. dedicated box?
>
> Hello
>
> I'd like some feedback about using Apache's mod_proxy to provide load
> balancing with other Apache2 servers vs. using a dedicated device.
>
> At this point, our first Apache2 server, acting as load balancer, is
> 50% idle, while the other Apache2 server is 0% idle:
>
> --- Apache #1 (includes load balancer to forward connections to Apache
> #2)
> top - 19:35:21 up 26 days, 2:21, 3 users, load average: 165.76,
> 163.97, 200.46
> Tasks: 829 total, 155 running, 673 sleeping, 1 stopped, 0 zombie
> Cpu(s): 36.3%us, 10.2%sy, 0.0%ni, 47.2%id, 5.1%wa, 0.1%hi, 1.0%si,
> 0.0%st
> Mem: 2070172k total, 1978392k used, 91780k free, 48016k
> buffers
> Swap: 998376k total, 244336k used, 754040k free, 518996k
> cached
>
> --- Apache #2
> top - 19:33:46 up 21 days, 3:23, 3 users, load average: 511.90,
> 468.51, 351.50
> Tasks: 1325 total, 105 running, 1219 sleeping, 1 stopped, 0 zombie
> Cpu(s): 28.5%us, 65.1%sy, 0.0%ni, 0.0%id, 0.0%wa, 1.1%hi, 5.4%si,
> 0.0%st
> Mem: 2061660k total, 2012144k used, 49516k free, 2084k
> buffers
> Swap: 922600k total, 430876k used, 491724k free, 104796k
> cached
>
> Any idea to explain this imbalance? Should we get better performance
> with a dedicated box?
>
> Thank you.
>
>
> ---------------------------------------------------------------------
> The official User-To-User support forum of the Apache HTTP Server
> Project.
> See <URL:http://httpd.apache.org/userslist.html> for more info.
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