[THIN] Re: thread quanta and chkroot.cmd thingy
- From: "Joe Shonk" <joe@xxxxxxxxxxxxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Tue, 16 Sep 2003 09:37:12 -0700
The thing is, the user may notice. 60ms vs 180ms is the time allocated per
thread. If it's just one user, he/she will not notice a difference. But as
more users log into the box, so do the number of threads (provided the users
actually do something, like run an applications. Otherwise, what was the
point of them logging on).
Think of it like this: You're off to grocery store to buy a package of
toilet paper. Two checkout lanes are open (as in two CPUs), both lanes have
a queue of 3 carts (threads) each. All 6 carts are filled to the brim. It
would take an average of 5 minutes each shopper to complete their order.
Your item would only take 30 secs to process. You're looking at a 15 minute
wait to purchase single item. What if the store had a quanta limit. Say
2.5 minutes per cart, at the end of 2.5 minutes what's been processed is
saved and the remaining items in the cart go to the end of the line. So
with 3 shoppers in front, that's a 7.5 - 8 minute wait (don't for get to add
time for cashier to save current shopper's information and switch to the
next shopper (Context Switch)). Now let's say the quanta limit is 1 minute
per cart. Now it's just a 3-3 1/2 minutes wait. Granted, the shoppers with
a full cart will have to wait longer, but those with smaller orders will
not.
Hopefully, if your grocery store is smart, it will give you a priority boost
and open an express lane. If the queue gets too long, it will open new
registers and/or higher faster cashier. Maybe add some Hyperthreading and
add a bagger at each lane. If business is good and the store is small, it
maybe time to remodel and upgrade the store. Or perhaps it's time to build
add another store.
Tuning and Optimization of a terminal server is a must, there are many well
known and well documents tweaks. Personally, I would stick to those. You
may understand the internal workings of windows better than anyone else but
that's because you're special. Someday, those servers maybe someone else's
responsibility and you may not be around to help.
Joe
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of Jim Kenzig
Sent: Tuesday, September 16, 2003 7:49 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: thread quanta and chkroot.cmd thingy
And do you really think a enduser will notice the time difference between 60
ms
and 180 ms? And one other thing I want to know...how do you figure in the
human
error of the testing of these things... I mean who is stopping and starting
the
stopwatch to time this? Are there computer programs you are using to do
this?
If you blink isn't that a few hundred milliseconds lost? How can you be
sure
it is accurate?
--
Regards,
Jim Kenzig
Quoting Brian Madden <brian@
> My completely theoretical and totally unsubstantiated theory: This setting
> does not matter on a Terminal Server.
>
> Brian
>
> Brian Madden
> 202.302.3657
********************************************************
This Week's Sponsor: ThinPrint
http://www.thinprint.com
**********************************************************
Useful Thin Client Computing Links are available at:
http://thethin.net/links.cfm
For Archives, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
http://thethin.net/citrixlist.cfm
********************************************************
This Week's Sponsor: ThinPrint
http://www.thinprint.com
**********************************************************
Useful Thin Client Computing Links are available at:
http://thethin.net/links.cfm
For Archives, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
http://thethin.net/citrixlist.cfm
Other related posts:
