[Gluster-users] Bonded Gigabit

[Adrian Revill]

Hi Liam,
Yes that is a good point, i will have to check for that, as I will be 
moving from 3com to Cisco 5500g
So far I only have 2 elderly test servers, using netperf i have measured 
1600Bbits/s which seems to be CPU limited. I will look at the double 
brick idea as it sounds a good work arround.

Liam Slusser wrote:
> I use balance mode0 on my gluster servers - but it doesnt exactly work
> as you would expect it too.  We run Cisco 4948g switches (48 port
> gigabit) and our gluster servers have two gigabit links bounded
> together using mode0.  Balance mode0 does a great job of balancing
> outbound traffic however the Cisco's always routes each single INBOUND
> tcp connection traffic down a single trunk.  So the only way to really
> gain an advantage is to use multiple tcp connections between the many
> hosts - or in the case of gluster using multiple bricks per server
> striped together.
>
> liam
>
> On Tue, Jan 5, 2010 at 7:20 AM, Adrian Revill
> <adrian.revill at shazamteam.com> wrote:
>   
>> Hi
>>
>> I am looking at which is the best bonding mode for giagbit links for the
>> servers. I have a choice of using the 802.3ad (mode4) or bonding-rr (mode0)
>> I would prefer to use mode4 but this will only give a single TCP connection
>> 1Gbit of bandwidth, where mode0 will give multi Gbit of band width to a
>> single TCP connection.
>>
>> My question is, If i have 4 mirrored servers. when a AFR replicates data
>> between servers, does it run multiple TCP connections concurrently to copy
>> the data to all 4 servers at once, or does it do each server in turn.
>>
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