[ZODB-Dev] ZEO bandwidth requirements?
Greg Ward
gward@mems-exchange.org
Fri, 26 Oct 2001 14:32:26 -0400
On 26 October 2001, Dunigan, Craig said:
> Can anyone tell me the minimum bandwidth requirements for a ZEO client to
> server connection? My IS manager recently put a PacketShaper on our frame
> relay link that connects my remote ZEO clients to my local ZEO server, and
> capped the bandwidth available to them at 32KB. This seems quite small to
> me, but is it sufficient? Naturally, performance of the remote Zope servers
> has suffered tremendously when they have to pull a new or modified object
> over the frame, and I'd like to be able to argue that ZEO requires greater
> bandwidth to function properly.
I hate to sound pedantic, but ZEO *should* still function correctly at,
say, 1 byte/sec. It will function *slowly*, but it should be *correct*
(in the absence of timeouts).
Which is just another way of saying that bandwidth requirements are
arbitrary and depend on the application. If your application is
unacceptably slow at 32 kB/sec between ZEO client and server, then
you'll have to take that up with your IS manager, and with whoever
decides what "unacceptably slow" us.
Alas, this is more of a political problem than a technical problem.
Good luck!
Greg
--
Greg Ward - software developer gward@mems-exchange.org
MEMS Exchange http://www.mems-exchange.org