Web Hosting Talk : Web Hosting Main Forums : VPS Hosting : xen network performance

[hpham]

I read somewhere that vps xen will have lower network speed, comparing to normal dedicated server. Is it true? If yes, is there any way to improve it?

[empoweri]

Originally Posted by hpham

I read somewhere that vps xen will have lower network speed, comparing to normal dedicated server. Is it true? If yes, is there any way to improve it?

Yes Xen does have some over head about 10-15% lower than using raw hardware. This is because of the network drivers AND ebtables/iptables which every domu must go through.

There are some tweaks you can do but overall no. This is especially true for a VPS provider that needs the additional security measures in place.

[PCS-Chris]

The overheads really arn't that noticable, we use nodes each with a 100Mbit connection and can still pull right utpo 10M/s from a decent server inside a VPS

[Jay Cornwall]

Originally Posted by Chris E

The overheads really arn't that noticable, we use nodes each with a 100Mbit connection and can still pull right utpo 10M/s from a decent server inside a VPS

This is correct. From a wget on a Xen VPS running Ubuntu at Clustered.net:

27% [=========> ] 28,138,671 11.19M/s

Perhaps the overheads become noticeable at the Gbit level, but up to 100Mbit seems absolutely fine.

[empoweri]

Here are some articles on the subject:

http://xen.xensource.com/files/xensu...kIO_Santos.pdf
http://www.cse.psu.edu/~bhuvan/teach...en-net-opt.pdf

Yes with gbit it seems to show up more.

[hpham]

Originally Posted by Jay Cornwall

This is correct. From a wget on a Xen VPS running Ubuntu at Clustered.net:

27% [=========> ] 28,138,671 11.19M/s

Perhaps the overheads become noticeable at the Gbit level, but up to 100Mbit seems absolutely fine.

From where to where?

[reiteration]

Originally Posted by Jay Cornwall

This is correct. From a wget on a Xen VPS running Ubuntu at Clustered.net:

27% [=========> ] 28,138,671 11.19M/s

Perhaps the overheads become noticeable at the Gbit level, but up to 100Mbit seems absolutely fine.

Don't forget all our VPS are connected via gigabit :-)