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- Path: rob.inetdirect.net!user
- From: ajbatista@inetdirect.net (Albert J. Batista Jr.)
- Newsgroups: comp.dcom.modems
- Subject: Overrun errors -- needing a solution
- Date: Mon, 08 Apr 1996 22:56:45 -0600
- Organization: Dragoon Enterprises, Inc.
- Message-ID: <AD8F4A2D96681BF6A@p6-term3.inetdirect.net>
- NNTP-Posting-Host: p6-term3.inetdirect.net
-
-
- Hello.. I am helping another PC user out with a problem he is experiencing
- with his communications...
-
- First of all, he owns an EasyData 486SX (guessing speed that it runs at
- least 66Mhz) with a USR Sportster 28.8 modem... He wants to run Netscape
- Navigator for Internet connecting..
-
- I have looked at the computer and run some tests of my own (using Quicklink
- Gold as another comm program) and I have come up with some pretty
- interesting things:
-
- 1) He can only connect at 19.2 using Netscape and not get any overrun
- errors.. Upping the Port speed to 38.4 and his modem speed to 28.8 results
- in overrun errors..
-
- 2) Now this I found interesting.. When I ran QuickLink Gold and
- downloaded a 150K file from a BBS, I got a throughput of 2669 cps, port
- speed was 57.6 and modem speed was 26.0 (didn't fully connect at 28.8) but
- the cps throughput was great...
-
- As I ran these tests, I noticed that Disk accessing was very limited in
- Quicklink Gold, compared to Netscape, which accesses the hard drive almost
- anytime you want to pull a web page from the 'net... So, I think that the
- disk accessing Netscape does causes considerable slowdown that causes the
- overruns..
-
- He has 8MB currently, and Virtual memory is set to 19MB (was set to 24MB
- but I reduced it via 19MB windows recommended; Windows 3.1 being used with
- the COMM.DRV communications driver)
-
- So, I figure that if he were to increase his "chip" memory to, let's say,
- 12MB or 16MB, that should reduce the disk drive accessing done by Windows
- to use virtual memory, therefore giving more CPU time to the comm port...
- Would that be a good solution to his problem? Or could I look at other
- alternatives??
-
- Here's what I've done to no avail:
-
- Changing Video to regular VGA (Cirrus was active before)
- Disabling some of his other things (SoundBlaster, CDROM, etc)
-
- Something I'm missing??? Any help would greatly be appreciated, as I'm
- trying to see if something other than telling him he needs more memory
- would help...
-
- Thanks
-
-
-