[THIN] Re: Load Evaluator query
- From: "Joe Shonk" <joe.shonk@xxxxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Fri, 2 Feb 2007 10:03:53 -0700
Best practices is generally:
Allocate Pagefile on a separate partition. This allows the pagefile
to be contiguous.
Set the minimum and maximum of the pagefile to the same amount.
This prevents CPU and I/O overhead to expand the pagefile during heavy
usage. It also prevents fragmentation of the pagefile.
Pagefile size should be 1.5x to 2x the amount of memory with some
exceptions. Max pagefile size is 4095 per volume without having to hack the
registry. This is also where common sense come into play. The maximum
memory for a standard 32bit Windows OS is 4 gigs with that being split
between kernel mode and user mode (2 gigs each). If you're pushing a 4 gig
pagefile then you have some a serious memory bottleneck. Either you can
tune the system (reduce memory utilization with the various tools out
there), scale out (add new servers), or scale up by moving to a 64-bit
platform and adding memory. So my recommendation? 4 gig pagefile Max for
the machine. Anything more is a waste of disk space.
Use only one pagefile if everything is on the same disk volume. The
only time having multiple pagefiles is useful is if you have multiple sets
of spindles(if using raid, not a single raid set but multiple raid sets),
otherwise you'll cause disk thrashing.
If you follow the first two recommendations, there is no need to
defrag the pagefile.
Joe
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf
Of christopher.walter@xxxxxxx
Sent: Friday, February 02, 2007 8:26 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Load Evaluator query
I personally configure the page defrag utility to run after each reboot.
I reboot my servers nightly. If your paging file is getting as used as
you say it is it should be a mess as well (By the way normal is about 1
or 2 fragments after you run the defrag utility.), unless you have the
option turned on in your OS to clear the pagefile on shutdown Wouldn't
recommend this though because it takes 5-15 minutes to reboot a server
depending on the size of the pagefile to clear it on shutdown.
My problem was CPU however with 6 gig's of pagefiles I shouldn't have
those problems again for a while.
Chris
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Angela Smith
Sent: Thursday, February 01, 2007 5:52 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Load Evaluator query
To clarify, you have a RAID 1 set with a C: and D: Drive. You have a
Pagefile on each drive (ie c and d)?
Internet Explorer is the app that is killing me. Most of our Apps are
IE
based and they use lots of memory / swap space. What issue did you have
with IE - was it using too much memory or CPU???
I didn't think the swapfile needed defragging. How high should the
fragment
setting be to dictate if it needs defragging? My Citrix servers has the
following setting when I run Page Defrag:
File Clusters Fragments
c:\pagefile 1048320 17
I would assume 17 is pretty low and hence does not need defragging..
Your thoughts?
Thanks
>From: <christopher.walter@xxxxxxx>
>Reply-To: thin@xxxxxxxxxxxxx
>To: <thin@xxxxxxxxxxxxx>
>Subject: [THIN] Re: Load Evaluator query
>Date: Thu, 1 Feb 2007 16:29:30 -0500
>
>No slowness at all. It would be better if you had a fat partition and
>for that matter on a RAID 0 but I don't have either of those. I have
>one page file both drives on a mirrored logical drive. The only
>problems I had were caused by people surfing in Internet Explorer. My
>company didn't want to limit where they could browse to (Except for the
>dirty sites) so I published each work related IE application and then
>published Internet Explorer for them. On the Published Application for
>Internet Explorer I gave the below normal CPU priority to fix that
>problem.
>
>Something else to note I use the Page Defrag utility found on the
>SysInternals website that defrags the page file nightly after a reboot.
>
>Chris
>
>-----Original Message-----
>From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
>Behalf Of Angela Smith
>Sent: Thursday, February 01, 2007 4:11 PM
>To: thin@xxxxxxxxxxxxx
>Subject: [THIN] Re: Load Evaluator query
>
>Interesting.. I would have thought adding extra swapfiles would make
>the
>system slower as it would be swapping to disk more.. I figured, if you
>had
>1 swapfile, once the server is fully loaded, the app would launch on a
>less
>loaded box which would increase performance
>
>Have you seen any addidional slowness with your approach?
>Do you have your additional swapfile on a FAT or NTFS partition?
>
>Thanks
>
>
> >From: <christopher.walter@xxxxxxx>
> >Reply-To: thin@xxxxxxxxxxxxx
> >To: <thin@xxxxxxxxxxxxx>
> >Subject: [THIN] Re: Load Evaluator query
> >Date: Thu, 1 Feb 2007 16:03:57 -0500
> >
> >Not bad at all. I have a ton of java apps which require lots of
memory
> >and swap file. I have a 4 gig page file and a 2 gig page file on
> >different drives. Works great. I balance on CPU and memory for over
> >140 servers and there is not one server that has more then 5 sessions
> >then any other server.
> >
> >If you have the option of putting a swap file on another drive or
even
>a
> >different logical drive I don't see this as bad practice at all as
long
> >as you have the free diskspace on each drive to support the page
file.
> >
> >Chris
> >
> >-----Original Message-----
> >From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
> >Behalf Of Angela Smith
> >Sent: Thursday, February 01, 2007 3:56 PM
> >To: thin@xxxxxxxxxxxxx
> >Subject: [THIN] Re: Load Evaluator query
> >
> >Chris we run Windows 2003 Standard which will not allow Pagefiles
> >greater
> >than 4096. The only thing I could do is have multiple pagefiles but
Im
> >sure
> >this is bad practice...
> >
> >
> > >From: <christopher.walter@xxxxxxx>
> > >Reply-To: thin@xxxxxxxxxxxxx
> > >To: <thin@xxxxxxxxxxxxx>
> > >Subject: [THIN] Re: Load Evaluator query
> > >Date: Thu, 1 Feb 2007 15:51:05 -0500
> > >
> > >Stupid question but have though about increasing your swap file
size.
> > >Best practices is to have a least 1.5 times your RAM anyways.
After
> >you
> > >do this you might find that your limiting factor on the servers is
> > >memory anyways.
> > >
> > >Chris
> > >
> > >-----Original Message-----
> > >From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]
On
> > >Behalf Of Angela Smith
> > >Sent: Thursday, February 01, 2007 3:41 PM
> > >To: thin@xxxxxxxxxxxxx
> > >Subject: [THIN] Re: Load Evaluator query
> > >
> > >Hi
> > >
> > >Servers all have 4Gb RAM. Swap file is 4096 (min and max). 85-95%
>of
> > >swap
> > >gets used on all servers. We will be looking at using Appsense or
> > >TScale
> > >soon which may help reduce swap usage but for now I need to use the
> >best
> > >
> > >evaluators for the current environment
> > >
> > >Regards
> > >
> > >
> > > >From: Bob <bobmails@xxxxxxxxx>
> > > >Reply-To: thin@xxxxxxxxxxxxx
> > > >To: thin@xxxxxxxxxxxxx
> > > >Subject: [THIN] Re: Load Evaluator query
> > > >Date: Thu, 1 Feb 2007 08:21:24 -0500
> > > >
> > > >How much RAM do your servers have? How big is the swap file?
How
> >much
> > >of
> > > >it gets used?
> > > >
> > > >That's a good rule choice, although I'd recommend retaining some
>user
> > >load
> > > >rule, whether it's server or application.
> > > >
> > > >
> > > >
> > > >On 1/31/07, Angela Smith <angela_smith9@xxxxxxxxxxx> wrote:
> > > >>
> > > >>Hi
> > > >>
> > > >>Just want some input on Load Evaluators. We used a custom
>evaluator
> > >which
> > > >>comprised of:
> > > >>
> > > >>- CPU Utilization
> > > >>- Memory Usage
> > > >>- Server User Load
> > > >>
> > > >>We have an issue where the load is not evenly spread across the
> > > >>farm. Some
> > > >>servers are running out of swapfile while other servers are
doing
> > >nothing.
> > > >>Most of our Apps use excess Swapfile. Im thinking of using the
> > >following
> > > >>evaluators:
> > > >>
> > > >>- CPU Utilization
> > > >>- Memory Usage
> > > >>- Page Swaps
> > > >>
> > > >>User load is not a good indicator for our farm. Can anyone see
>any
> > >issues
> > > >>with using the above?
> > > >>
> > > >>Thanks
> > > >>
> > >
>>_________________________________________________________________
> > > >>Advertisement: Fresh jobs daily. Stop waiting for the newspaper.
> > >Search
> > > >>Now!
> > > >>www.seek.com.au
> > > >>
> > >
> >
>
>>http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2
> > >Eau&_t=757263760&_r=Hotmail_EndText_Dec06&_m=EXT
> > > >>
> > > >>SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
> > > >>************************************************
> > > >>For Archives, RSS, to Unsubscribe, Subscribe or
> > > >>set Digest or Vacation mode use the below link:
> > > >>//www.freelists.org/list/thin
> > > >>************************************************
> > > >>
> > >
> > >_________________________________________________________________
> > >Advertisement: Fresh jobs daily. Stop waiting for the newspaper.
>Search
> > >now!
> > >www.seek.com.au
> >
>
>http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2E
> >a
> > >u&_t=757263760&_r=Hotmail_EndText_Dec06&_m=EXT
> > >
> > >SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
> > >************************************************
> > >For Archives, RSS, to Unsubscribe, Subscribe or
> > >set Digest or Vacation mode use the below link:
> > >//www.freelists.org/list/thin
> > >************************************************
> > >SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
> > >************************************************
> > >For Archives, RSS, to Unsubscribe, Subscribe or
> > >set Digest or Vacation mode use the below link:
> > >//www.freelists.org/list/thin
> > >************************************************
> >
> >_________________________________________________________________
> >Join the millions of Australians using Live Search. Try live.com.au
>
>http://ninemsn.com.au/share/redir/adTrack.asp?mode=click&clientID=740&r
>e
> >ferral=million&URL=http://live.com.au
> >
> >SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
> >************************************************
> >For Archives, RSS, to Unsubscribe, Subscribe or
> >set Digest or Vacation mode use the below link:
> >//www.freelists.org/list/thin
> >************************************************
> >SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
> >************************************************
> >For Archives, RSS, to Unsubscribe, Subscribe or
> >set Digest or Vacation mode use the below link:
> >//www.freelists.org/list/thin
> >************************************************
>
>_________________________________________________________________
>Advertisement: Fresh jobs daily. Stop waiting for the newspaper. Search
>Now!
>www.seek.com.au
>http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2E
a
>u&_t=757263760&_r=Hotmail_EndText_Dec06&_m=EXT
>
>SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
>************************************************
>For Archives, RSS, to Unsubscribe, Subscribe or
>set Digest or Vacation mode use the below link:
>//www.freelists.org/list/thin
>************************************************
>SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
>************************************************
>For Archives, RSS, to Unsubscribe, Subscribe or
>set Digest or Vacation mode use the below link:
>//www.freelists.org/list/thin
>************************************************
_________________________________________________________________
Advertisement: It's simple! Sell your car for just $20 at
carsales.com.au
http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fsecure%2Dau%2Eimrworldwi
de%2Ecom%2Fcgi%2Dbin%2Fa%2Fci%5F450304%2Fet%5F2%2Fcg%5F801577%2Fpi%5F100
5244%2Fai%5F838588&_t=757768878&_r=endtext_simple&_m=EXT
SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
************************************************
For Archives, RSS, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
//www.freelists.org/list/thin
************************************************
SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
************************************************
For Archives, RSS, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
//www.freelists.org/list/thin
************************************************
SBC SITES ONLY GOOGLE SEARCH: http://www.F1U.com
************************************************
For Archives, RSS, to Unsubscribe, Subscribe or
set Digest or Vacation mode use the below link:
//www.freelists.org/list/thin
************************************************
Other related posts:
