Help - slow,slow, slip,slip, slow

Help - slow,slow, slip,slip, slow

Post by Frank McGui » Tue, 29 Aug 1995 04:00:00



        I'm trying to connect to the Net using Linux.

        Everything works fine in Windows..14.4k,Cslip

        When I connect using Dip/Slip it's VERY SLOW.

        Ping to local ISP host 300ms using Windows...

        about 12secs using Linux and a lot of errors

        (lost pkts). The modem has a 16550A uart,connects

        at 14400 Rel LAPM ok and I've the speed set to 38400

        in Dip....(stty shows speed 38400 and crtscts set)

        Any advice/help would be appreciated.
                                             Thanks,FMcG

 
 
 

Help - slow,slow, slip,slip, slow

Post by Frank McGui » Wed, 30 Aug 1995 04:00:00



Quote:

>        I'm trying to connect to the Net using Linux.

>        Everything works fine in Windows..14.4k,Cslip

>        When I connect using Dip/Slip it's VERY SLOW.

>        Ping to local ISP host 300ms using Windows...

>        about 12secs using Linux and a lot of errors

>        (lost pkts). The modem has a 16550A uart,connects

>        at 14400 Rel LAPM ok and I've the speed set to 38400

>        in Dip....(stty shows speed 38400 and crtscts set)

>        Any advice/help would be appreciated.
>                                             Thanks,FMcG

                        _______________

        I posted this article earlier today, but I've since
        discovered what the problem was....I had a getty
        running on ttys0 but not being used. My modem
        is on ttys2 and these share the same IRQ(4).Linux
        was polling ttys0 using IRQ4..and screwing up the
        modem. I killed getty(s0) and the modem's OK now.
                        ________________

 
 
 

Help - slow,slow, slip,slip, slow

Post by Martia » Fri, 08 Sep 1995 04:00:00


I wonder if youre IRQ situation is kinda off...
Linux will not share irqs, so it will be awfully slow...
check to see what port the modem is on.
use 1 or 2 never 3 or 4 unless you have a serial port that will let you
change the IRQ to 2 or 5 or something else.

Lee.

 On 28 Aug 1995, Frank McGuire

Quote:>    I'm trying to connect to the Net using Linux.

>    Everything works fine in Windows..14.4k,Cslip

>    When I connect using Dip/Slip it's VERY SLOW.

>    Ping to local ISP host 300ms using Windows...

>    about 12secs using Linux and a lot of errors

>    (lost pkts). The modem has a 16550A uart,connects

>    at 14400 Rel LAPM ok and I've the speed set to 38400

>    in Dip....(stty shows speed 38400 and crtscts set)

>    Any advice/help would be appreciated.
>                                         Thanks,FMcG

 
 
 

1. Slow slow connection over 14.4 dip/slip 19.2

: I am running (slackware) Linux 1.1.59 and am certainly new at this.  I
: have connected via dip with my script.  My first outing onto the internet was
: to sunsite via ftp.  Just to get to the end of the anonymous login screen took
: nearly 10 minutes!  My machine is 486DX2/66.  The necesasry software
: seems to be installed, as the necesary protocols are running.  The line settings
: are at 19200 (above the spped that the 14.4 modem is connecting)  The
: DNS server is my internet provider's and specified so.  I am sure I have done
: something wrong and/or am missing something, as I have a queasy feeling
: that I am seriously behind in my version, patches, etc.
: I don't need quickfixes, and I'm trying to read every damn thing that has
: the word Linux in it, although the whole thing is getting a bit swimmy.
: I didn't come across this problem in the 600+ articles I read today,
: so any info would be truly appreciated.


: NetPress Co.
: http://www.interport.net/~ford/ (personal)

Could be the 'net was slow that day?  Try:

    traceroute sunsite.unc.edu    (or your favorite host)

and see if things are backing up on the network.  From what I've seen,
the network quickly saturates (is your service provider running
anything slower than 56Kb frame relay)?

Traffic jams on the information superhighway. ;-)

--
-- Carlos Perez                               "My other car is Ada"

-- team Ada (Ada9X:  object-oriented, multi-threaded, totally-cool)

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