[THIN] Re: Load Balancing, so what if ALL servers report a full load
- From: "Rick Mack" <Rick.Mack@xxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Thu, 28 Oct 2004 21:16:22 +1000
Hi,
Once a server gets "full" it becomes unavailable for any more logins. You'll
see this happening if you use time-sheduled load balancing. When the
timescheduling cuts in, the server load goes to 10000 and no more users can get
logged on.
Considering that the default is 100 users for a full load user loading
shouldn't be too much of a problem.
But if you've got 90 users in total and want some redundancy, then setting the
servers to a maximum of less than 45-50 would be kind of counterintuitive.
All you're doing by raising the maximum user numbers is reducing the
granularity a bit. Load balancing will still work, but get a bit less well
balanced.
Of course there was the time when the IMA service on a server went haywire and
it remained the "least" loaded server despite 147 people logging on.
Interresting exercise in scalability ;-)
regards,
Rick
Ulrich Mack
Volante Systems
________________________________
From: thin-bounce@xxxxxxxxxxxxx on behalf of jstrowe@xxxxxxxxxxxxxxxx
Sent: Thu 28/10/2004 2:17 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Load Balancing, so what if ALL servers report a full load
XPe, this does seem like a basic question... ok I load balance three servers.
Users get nicely distributed from 1 to 2 to 3. What happens if ALL servers
have a full load?
Do my users rub rocksalt? Do they get moved to the "least" fully loaded server?
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