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Conference noted::windows95

Title:Microsoft Windows 95 ("Chicago")
Notice:Please read topics 1 to 22 before writing anything
Moderator:EEMELI::BACKSTROM
Created:Sun Nov 13 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2958
Total number of notes:19968

2900.0. "Mysterious disk I/O" by ODIXIE::RREEVES () Tue Apr 08 1997 16:48

    I sometimes start to experience disk I/O for no apparent reason 
    when running  some games. I thought at first that this might be
    scandisk starting up but there doesn't seem to be another application 
    running besides Quake. 
    
    I have 32 Megabytes of memory on the computer and have experienced this 
    problem when running some office applications also. 
    
    Has anyone else experienced this ?  The disk I/O seems to interfere
    with the systems performance. I'm sorry for not being clearer about
    describing this issue this is the best I can do.
    
    Regards,
    
    Ray
T.RTitleUserPersonal
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2900.1COOKIE::FROEHLINVMS...riding into the setting sun!Tue Apr 08 1997 17:0413
    One sure reason is the disk cache. It takes up close to all what's left of
    free memory minus some cushion. After a few (10?) minutes or
    some disk inactivity period "dirty" pages from the cache are written 
    to disk to make disk cache memory readily available for other use.
    It's really hard to tell on Windows 95 how much memory is really in
    use.
    
    Also I have noticed disk activities even after hours I haven't touched
    the system. Don't know where this is coming from. Maybe triggered by
    something behind the network or RAS connection (Bill Gates tunelling
    in?)?
    
    Guenther
2900.2P1? nah...BSS::PROCTOR_RPC....Politically CorruptTue Apr 08 1997 18:321
    or see note 2899.* for other possible activity-related reasons.
2900.3WOTVAX::HILTONSave Water, drink beerWed Apr 09 1997 06:234
    >> running besides Quake.
    
    Quake is very heavy on resources, it's probably expanding your swop
    file.
2900.4BULEAN::BANKSSaturn SapWed Apr 09 1997 08:362
    Or, as usual, Microsoft Office's Find Fast daemon.  It always seems to
    want to beat the crap out of my disk, just when I least want it to.
2900.5How do you shut off fast find ?ODIXIE::RREEVESWed Apr 09 1997 09:563
    I would be suprised if Quake had anything to do with it, I have 32
    megabytes of memory. I just upgraded to MS Office 97  so maybe it's
    the Fast find daemon. How do you shut that little bugger off ?
2900.6NPSS::GLASERSteve Glaser DTN 226-7212 LKG1-2/W6 (G17)Wed Apr 09 1997 10:005
    Control Panel Find Fast icon is used to configure the Office 97 Find
    Fast Daemon.
    
    It can also be used to pause things when the daemon is getting in the
    way.
2900.7WOTVAX::HILTONSave Water, drink beerWed Apr 09 1997 10:094
    >>  would be suprised if Quake had anything to do with it, I have 32
    
    I wouldn't be surprised at all, Quake nicks as much memory as it can.
    
2900.8VirusScanACISS1::s_coghill.dyo.dec.com::CoghillSSteve Coghill, NSIS Solution ArchitectWed Apr 09 1997 12:411
Also, some virus scanners work in the background.
2900.9Thanks for all your suggestionsODIXIE::RREEVESWed Apr 09 1997 16:186
    I shut the Virus scanner off and this just started about the time 
    I upgraded to Office 97. So heres the deal, I'll shutdown fast find
    and blast some fellow Quakers on the Internet for an evening or two 
    and report back what I find.
    
    	Thanks for all your suggestions
2900.10Mine rattles tooSNOFS1::16.153.96.192::powellronaldAustralia!Wed Apr 09 1997 20:0210
I am running Dashboard 95 on a 64Mb pentium 120 machine. One of the features is 
that it has a resource screen showing memory in use, threads, virtual machine 
and disk capacity. This may help give you enough information on what is going 
on. My W95 running office 95 does the disk rattling thing as well, as does a 
collegues winnt4.0 machine running office95. Dashboard 95 can be downloaded from 
the web as a full function 30 day trial copy from Starfish, use Alta Vista to 
find the site.


 Ron Powell.
2900.11Another data pointCADSYS::GROSSThe bug stops hereThu Apr 10 1997 10:183
My W95 P133 with 40MB but no OFFICE* does the same thing.

Dave
2900.12another h-d 'exerciser'STRATA::LPIPERThu Apr 10 1997 13:585
    and then there's my rig at home that thrashes the hard drive for a
    minute or two well after I've put away EasyPhoto.  What it's doing
    and why is beyond me!  but rattle away it does!  No 'office' on this
    one either.
    
2900.13Swap file?EPS::GUARINOThu Apr 10 1997 14:405
    Could the thrashing be the swap file? I have noticed, after
    closing programs, that the swap file changes size and also
    after the disk was thrashing.
    
    Vin
2900.14It is the swap fileVARDAF::CHURCHDave Church@VBE (DTN 828-6125)Fri Apr 11 1997 04:4910
    RE:.13
    
    I've taken a directory listing while running MS-Exchange and took a
    listing after exiting [waiting about a minute or so for the disk
    activity to start/finish] 
    
    While running MS-Exchange - WIN386.SWP - 13,631,488 bytes
    after exiting                             3,923,968
    
    Dave
2900.15BUSY::SLABA Parting Shot in the DarkFri Apr 11 1997 08:307
    
    	Strange.
    
    	I just got the error "Invalid I/O channel" when trying to get into
    	this conference 20 seconds ago, and the first unseen was in this
    	note.
    
2900.16Wintop?CHEFS::TREVENNOR_AA child of initFri Apr 11 1997 08:3911
    Ray,
    	Can you run wintop.exe (from the addons kit) to show who is doing
    all this I/O? I have much edperience of using games in Win95 (strictly
    for business purposes - no honestly!) and I have observed the same
    things with other titles. I agree with the others it sounds like swap
    file management (contraction and optimisation). Unix systems do similar
    stuff.
    
    Regards
    Alan T.
    
2900.17hmmmm...PCBUOA::gizmo.ako.dec.com::rsudFri Apr 11 1997 12:2410
Have you gotten the "socket problem" fix 95??

Programs which use sockets extensively can cause hard disk
access due to a memory "leak".

Don't know what apps or game you are running, but if they
use sockets...then try the patch from MS.

Regards,
Rajehs.
2900.18Disk activityMIPSBX::"[email protected]"Alfred WilmsMon Apr 14 1997 10:0620
Suggestions for a 32 Meg System

1. In System.ini under [Vcache]   put

MinFileCache=6144
MaxFileCache=6144

This will take care of the disk cashing

2. Optional

    Defrag your disk (don't forget!!!)
    Under Settings/System/Performance/Virtual Memory
    define your Virtual memory settings as Fixed  Min : 64MB; Max : 200Mb

This will reduce a lot announces caused by Swapfile Changes

How this all works ?
See:  AltaVista :        +Win95 +FAQ +Vcache
[Posted by WWW Notes gateway]
2900.19Did you mean...? and if you've plenty of disk space?VARDAF::CHURCHDave Church@VBE (DTN 828-6125)Fri May 09 1997 05:0820
    re:.18
    
    ## define your Virtual memory settings as Fixed  Min : 64MB; Max : 200Mb
    
    Do you enter 64MB and 200MB as is, or 64 and 200, or...?
    
    As you get a warning that you can screw your system up I'm a little
    nervous with getting it wrong... e.g. can't restart the PC!
    
    
    Also if you're running with plenty of free disk space [>1.4GB] could
    you up the figures for both the MinFileCache/MaxFileCache and Virtual
    memory settings?
    
    I'm looking at later going to 64MB of mem would the above figures still
    be optimum or should they be upped/reduced?
    
    Thnx,
    
    Dave