Re: [squid-users] Multicast Question

2004-12-09 Thread Henrik Nordstrom 
On Thu, 2 Dec 2004, J Thomas Hancock wrote:
Is there a significant performance increase?  Instead of sending an ICP
query to each peer, I only send the packet out once, but I will still get
the same number of responses.
Will multicast scale better than just using a peer relationship?
The difference is marginal with most modern network interfaces, but if you 
have very many peers in the group (lets say 10 or more) then it may be 
worthwhile.

Regards
Henrik

[squid-users] Multicast Question

2004-12-02 Thread J Thomas Hancock 
First off I would like to thank everyone for their input on my previous disk
configuration question.

I am in the process of setting up a small army of transparent caching
servers.  I am using Fedora Core 3 as the OS and Squid version 2.5.7
compiled from source.  The servers each have 2 NICs.  I plan on using NIC1
for clients and fetching the information from the internet.  I want to use
NIC 2 to share the cache with the other Squid servers.

I currently have a peer_cache setup that seems to be working.  I would like
to change it to a multicast group.

Is there a significant performance increase?  Instead of sending an ICP
query to each peer, I only send the packet out once, but I will still get
the same number of responses.

Will multicast scale better than just using a peer relationship?

Finally, can I use a private IP subnet like 192.168.1.0/24 for the second
NICs and the multicast address or must I use addresses in the multicast
space?

Thank you,
Tom Hancock

Re: [squid-users] Multicast Question

2004-12-02 Thread Ow Mun Heng 
On Thu, 2004-12-02 at 17:44, J Thomas Hancock wrote:
 First off I would like to thank everyone for their input on my previous disk
 configuration question.
 
 I am in the process of setting up a small army of transparent caching
 servers.  I am using Fedora Core 3 as the OS and Squid version 2.5.7
 compiled from source.  The servers each have 2 NICs.  I plan on using NIC1
 for clients and fetching the information from the internet.  I want to use
 NIC 2 to share the cache with the other Squid servers.
 
 I currently have a peer_cache setup that seems to be working.  I would like
 to change it to a multicast group.

I don't know. checking on the O'reilly book - Squid: A Definitive guide, the 
author says multicast ICP is unreliable.

YMMV