Re: NFTS problems in XPe (What are reserved clusters?)

From: KM (konstmor_at_nospam_yahoo.com)
Date: 02/22/05 

Date: Tue, 22 Feb 2005 12:38:25 -0800

Mark,

Was that a big number of files your ASP.NET web content uses?
I am wondering if the problem was about the "virtual" clusters that NTFS uses for compression.
You can read more about the compression here http://www.digit-life.com/articles/ntfs/ (look under the Compression section). 

-- 
 Regards,
        KM, BSquare Corp.
> I thought about it, but since the problem only happens when accessing
> ASP.NET webpages, I didn't try it.
>
> I followed up on the one good answer I got, and tried to uncompress the
> ASP.NET temporary directory.  It solved the problem.  I also recreated the
> problem on Windows 2000 and Windows XP by compressing the ASP.NET temporary
> directory.  On those systems, loosing 100mb of space is almost unnoticed.
> On XPe and out 470mb partition, loosing 100mb is very noticible.  I have
> opened a problem report with Microsoft.
>
> -- 
> Regards.
> Mark K Vallevand   Mark.Vallevand@Unisys.com
>
> Beer is living proof that God loves us and wants us to be happy.
> - Benjamin Franklin
>
>
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
> MATERIAL and is thus for use only by the intended recipient. If you received
> this in error, please contact the sender and delete the e-mail and its
> attachments from all computers.
>
>
> "KM" <konstmor@nospam_yahoo.com> wrote in message
> news:%23a7JEPRGFHA.2756@TK2MSFTNGP15.phx.gbl...
> > Mark,
> >
> > Sorry for repeating the tip but did you try playing with the NTFS's MFT
> > Reservation?
> > I wonder if the reserved clusters you mentioned above are for MFT.
> >
> > If so, you can tweak it using fsutil tool or through the registry:
> > Key [HKLM\SYSTEM\CurrentControlSet\Control\FileSystem]
> > Value NtfsMftZoneReservation of DWORD type (1 to 4) allows you to specify
> > MFT Zone for the newly created/formatted volumes (12.5
> > percent, 25 percent, 37.5 percent, 50 percent of NTFS volume accordingly).
> >
> > Some more info you can find here:
> > http://support.microsoft.com/default.aspx?scid=kb;en-us;Q174619
> >
> > -- 
> > Regards,
> >        KM, BSquare Corp.
> >
> >
> >> I tried to be selective about the groups I posted, and re-wrote the
> >> message
> >> for each group.  I could have sprayed.  I also could have been more
> >> efficient, or more polite, or whatever.  I was simply hoping to ask a
> >> broader range of people without stepping on too many toes.
> >>
> >> The best answer I've gotten so far is that ASP.NET likes to reserve
> >> clusters
> >> for decompressing files.  Why it reserves 100mb for decompressing 6mb of
> >> webpages into 8mb, or 16mb of compiled webpages into 20mb, is unanswered.
> >> It might simply be "because".  Just like Windows Backup requires 300mb
> >> free
> >> space.  "Because."  Now, Windows Backup is tweeked to require only 100mb
> >> free space.  Maybe ASP.NET will be tweeked as well.
> >>
> >> -- 
> >> Regards.
> >> Mark K Vallevand   Mark.Vallevand@Unisys.com
> >>
> >> Beer is living proof that God loves us and wants us to be happy.
> >> - Benjamin Franklin
> >>
> >>
> >> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
> >> MATERIAL and is thus for use only by the intended recipient. If you
> >> received
> >> this in error, please contact the sender and delete the e-mail and its
> >> attachments from all computers.
> >>
> >>
> >> "KM" <konstmor@nospam_yahoo.com> wrote in message
> >> news:eiv15mgFFHA.1188@tk2msftngp13.phx.gbl...
> >> > But at the same time be careful and forewarned that a post to very many
> >> > MS
> >> > public newsgroups may be rejected as suspected to be
> >> > spam.
> >> >
> >> > -- 
> >> > Regards,
> >> >        Konstantin
> >> >
> >> >
> >> >> Mark,
> >> >>
> >> >> Multiplying same posting at different News Groups is very bad idea
> >> >> since
> >> >> it will irritate peoples that read them all.
> >> >>
> >> >> You can post one message to all news groups at once so they are linked
> >> >> together.
> >> >> This way you will have to check only one NG for answers.
> >> >> All people will download only once post instead for each NG
> >> >> separately.
> >> >> We all can see what people from other NG suggested and give our
> >> >> comments
> >> >> as well. (So you have bigger range of different answers)
> >> >> Probably there are other benefits for all that I can't remember at the
> >> >> moment.
> >> >>
> >> >> Regards,
> >> >> Slobodan
> >> >>
> >> >> "Mark K Vallevand" <mark.vallevand@unisys.com> wrote in message
> >> >> news:%23Kf2QLgFFHA.1932@TK2MSFTNGP14.phx.gbl...
> >> >> > Thanks.  I'm posting in several other groups.
> >> >> >
> >> >> > I've heard that Microsoft Message Queuing (MSMQ) doesn't work on
> >> >> > compressed
> >> >> > NFTS.  Any one else heard this?
> >> >> >
> >> >> > http://support.microsoft.com/kb/251186/EN-US/
> >> >> >
> >> >> > Quoting:
> >> >> > If you run a program that uses transaction logging and that
> >> >> > constantly
> >> >> > writes to a database or log, configure the program to store its
> >> >> > files
> >> >> > on a
> >> >> > volume that is not compressed. If a program modifies data through
> >> >> > mapped
> >> >> > sections in a compressed file, the program can produce "dirty" pages
> >> >> > faster
> >> >> > than the mapped writer can write them. Programs such as Microsoft
> >> >> > Message
> >> >> > Queuing (also known as MSMQ) do not work with NTFS compression
> >> >> > because
> >> >> > of
> >> >> > this issue.
> >> >> >
> >> >> > Well, MSMQ core is in my image, required by DotNET framework.  Maybe
> >> >> > its not
> >> >> > being used, or maybe there is some connection.
> >> >> >
> >> >> > -- 
> >> >> > Regards.
> >> >> > Mark K Vallevand   Mark.Vallevand@Unisys.com
> >> >> >
> >> >> > Beer is living proof that God loves us and wants us to be happy.
> >> >> > - Benjamin Franklin
> >> >> >
> >> >> >
> >> >> > THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE
> >> >> > PROPRIETARY
> >> >> > MATERIAL and is thus for use only by the intended recipient. If you
> >> >> > received
> >> >> > this in error, please contact the sender and delete the e-mail and
> >> >> > its
> >> >> > attachments from all computers.
> >> >> >
> >> >> >
> >> >> > "Doug Hoeffel" <doug.hoeffelNo@SpAmMcamtronics.com> wrote in message
> >> >> > news:%23ducEUfFFHA.3608@TK2MSFTNGP14.phx.gbl...
> >> >> > > Mark:
> >> >> > >
> >> >> > > Maybe:
> >> >> > >
> >> >> > > microsoft.public.windows.file_system
> >> >> > > microsoft.public.win2000.file_system
> >> >> > >
> >> >> > > HTH... Doug
> >> >> > >
> >> >> > > "Mark K Vallevand" <mark.vallevand@unisys.com> wrote in message
> >> >> > > news:ea3g0gdFFHA.1836@tk2msftngp13.phx.gbl...
> >> >> > >> On my XPe system, the file system is EWF RAM Reg compressed NTFS
> >> >> > >> in
> >> >> > >> 470mb
> >> >> > >> partition on 512mb Compact Flash.  When ASP.NET webpages are
> >> >> > >> accessed,
> >> >> > >> the
> >> >> > >> NTFS "Total Reserved" space grows to fill the entire file system.
> >> >> > >>
> >> >> > >> What are these reserved clusters and why is IIS and ASP.NET using
> >> >> > >> them?
> >> >> > >>
> >> >> > >> If you stop IIS and delete the ASP.NET temp files (compiled
> >> >> > >> webpages),
> >> >> > >> the
> >> >> > >> reserved space is sometimes released.  The ASP.NET temp files are
> >> >> > >> quite
> >> >> > >> small (5mb) and deleting them can free 120mb reserved space.
> >> >> > >> But,
> >> >> > >> this
> >> >> > >> doesn't always free the reserved space.
> >> >> > >>
> >> >> > >> If you commit and restart, the reserved space in the file system
> >> >> > >> always
> >> >> > >> in
> >> >> > >> released.
> >> >> > >>
> >> >> > >> I have tried running with EWF disabled and it behaves the same.
> >> >> > >>
> >> >> > >> Is there a good forum to ask NTFS questions?
> >> >> > >>
> >> >> > >> -- 
> >> >> > >> Regards.
> >> >> > >> Mark K Vallevand   Mark.Vallevand@Unisys.com
> >> >> > >>
> >> >> > >> Beer is living proof that God loves us and wants us to be happy.
> >> >> > >> - Benjamin Franklin
> >> >> > >>
> >> >> > >>
> >> >> > >> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE
> >> >> > >> PROPRIETARY
> >> >> > >> MATERIAL and is thus for use only by the intended recipient. If
> >> >> > >> you
> >> >> > > received
> >> >> > >> this in error, please contact the sender and delete the e-mail
> >> >> > >> and
> >> >> > >> its
> >> >> > >> attachments from all computers.
> >> >> > >>
> >> >> > >>
> >> >> > >>
> >> >> > >
> >> >> > >
> >> >> >
> >> >> >
> >> >>
> >> >>
> >> >
> >> >
> >>
> >>
> >
> >
>
>

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