🚀 go-pugleaf

In article <39sbrt$ogp@ixnews1.ix.netcom.com> BJSpace@ix.netcom.com (B. E. Johnson) writes:
>Path: tequesta.gate.net!news.sprintlink.net!howland.reston.ans.net!ix.netcom.com!netnews
>From: BJSpace@ix.netcom.com (B. E. Johnson)
>Newsgroups: comp.sys.ibm.pc.hardware.storage,demon.tech.pc
>Subject: Re: Rocket versus 32-bit file access
>Date: 10 Nov 1994 05:42:21 GMT
>Organization: Netcom
>Lines: 60
>Distribution: world
>Message-ID: <39sbrt$ogp@ixnews1.ix.netcom.com>
>References: <674529809wnr@rosebery.demon.co.uk>
>NNTP-Posting-Host: ix-mon1-02.ix.netcom.com


>In <674529809wnr@rosebery.demon.co.uk> Brian@rosebery.demon.co.uk (Brian 
>Sheehan) writes: 

>>
>>I'm currently trying to decide to establish my windows 3.11 
>>setup with either 32 bit file and disk acccess enabled or 
>>to use the utility Rocket. Under DOS I'm certainly getting 
>>better performance but under Windows the performance seems
>>almost identical (I'm using the Western Digital driver for 
>>my two hard disks), although throughput figures measured 
>>with PC Tools for Windows gives Rocket a slight edge. 
>>The throughput is about 1200kbs. 
[snip]

>My jury is still out on DR but the 'feel' you get that the machine is 
>faster with 32-bit enabled is real and has little to do with the 
>transfer rate. What is making the big difference is that with standard 
>Windows the Windows system drops repeatedly into real mode to do disk 
>transfers and then back up into 386 enhanced after each file is read in. 
[snip]
>   .^:_._:^.                               :
>   :-:.^.:-:  B.E.Johnson                  : As has always been,
>   :_:|=|:_:  American Air&Space Artist    : We navigate by the stars.
>   : :|.|: :                               :
>   :-/|.|\-:                               : Only now...
[snip]

The other factor is that as I recall, vcache is a file cache as opposed to 
a track cache -- as a result all, or a significant portion, of a file a read 
in to the cache so its available more readily.  the track cache approach reads 
one or more tracks in, which may or maynot contain the data needed next.


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