Re: (PM) Slow throughput

John W Baxter (jwblist@olympus.net)
Sat, 13 Jun 1998 11:53:06 -0700

At 22:01 -0400 6/12/98, Joe Hartley wrote:
>Robert Hough (rch@iserve.net) wrote:
>> I was just wondering if anyone has noticed any slow, or sluggish throughput
>> with the pm3 when connected via modem? I've had a few people complain that
>> it 'feels' slower than when they connect to our pm2 & mp16's... Connect
>> rates are high, and seem very stable.
>
>I had a chance to experience this firsthand today when I was at a client's
>site. I had dialed in to check email, and my first thought was "cool,
>45K! This is great!" It was so damn slow that it felt like 2400bps!
>
>Not all the time - it seemed very "bursty". I went to our website and
>watched what happened. I'd be pulling down images at 5.5Kb according to
>Netscape, then boom - nothing for 5, 10, 15 seconds, then the data would
>start up again.
>
>This was with a USR V.90 Sportster and ComOS 3.8b15.

Check
show m##
for the call. I see the burstiness when I have a connection which
renegotiates a lot (on an extreme case, I can get into the three digit
count range in just a few minutes, although those calls have a tendence to
die altogether).

Here's my current call (which started at 48000):

xxxx> show m15
Card Type: Lucent Chipset
State: ACTIVE
Active Port: S6
Transmit Rate: 45333
Receive Rate: 24000
Connection Type: LAPM/V42BIS
Chars Sent: 780893539
Chars Received: 95592277
Retrains: 0
Renegotiations: 32

Total Calls: 1319
Modem Detects: 1268
Good Connects: 1268

This is with a USR 56K V.90/X2, calling from 360-437 (which has its own CO
with a DMS-10), from which I can't get Flex connections at all (with any
modem I've tried, on any line I've tried from). I don't see this sort of
connection when I carry the modem from home (where I work) to the office
(close to the central office in another town).

On a really bad day, I switch to calling our POTS/analog-modem hunt group
(where the modem almost always does 28.8, talking to its aunts and uncles
(MP8s and MP16s)).

--John

--
John Baxter   jwblist@olympus.net      Port Ludlow, WA, USA
Give a man a fish and you feed him for a day.  Teach him to fish,
and you get rid of him for the weekend.
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