Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!tut.cis.ohio-state.edu!ucbvax!hplabs!hp-pcd!hplsla!kens
From: kens@hplsla.HP.COM (Ken Snyder)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Problem: modem errors w/ disk cacheing?
Message-ID: <5190079@hplsla.HP.COM>
Date: 2 Mar 90 20:41:09 GMT
References: <1421@oak8.UUCP>
Organization: HP Lake Stevens, WA
Lines: 22

> From hamilton@cell.mot.COM Thu Mar  1 07:59:40 1990
> 
> When transferring files at high rates (9600, 14400), I encounter
> frequent errors (like every other block) using ymodem or xmodem.
> 
> A friend told me that the disk cacheing is to blame because interrupts
> are disabled while the cacheing is being executed and at high bit rates
> 
> Can anyone confirm that this is true?  If it is true, is there any way

   Yes this is true.  There are a couple of ways to get around it.  I'm
familiar with pckwik & pc-cache & both systems allow you to turn caching
off and on from the command line.  Another solution is that both allow you
to specify the maximum block size to be transfered to the disk.  This sets
the maximum time the interrupts will be disabled.  Pckwik, at least, has a
discussion of this in their manual.  The pc-cache manual discusses the
disabling of interrupts but doesn't specifically relate it to communications
programs.

Hope this helps,

Ken