> From [EMAIL PROTECTED] Thu Oct 12 20:22:21 2000
> Date: Thu, 12 Oct 2000 20:31:08 +0000
> From: David Livingstone <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED], [EMAIL PROTECTED]
> Subject: Re: LPRng: Problem with ifhp-3.3.21
>
>
> Found the solution !!
>
> On the ExtendNet external print servers there is a port configuration parameter
> for "Language Switching"(ie PCL/PS), on mine the value was set to "Auto". The trick
> is to set this to "off". Now the "pjl echo" is returned almost immediately.
>Obviously the
> transfer time does not improve. I verified this with other setups. Suggest you add
>this
> to the documentation ...
>
> Question : What arguments can I use to persuade our IT department to switch from
>external
> ExtendNet print servers to internal JetDirect cards ?
Could you please look at the LPRng-HOWTO,
and the section on 'Network Print Server Configuration Information'
a) Send me the 'table' entry (straight text is fine)
b) Send me the additional 'configuration' setup that must be done.
As for the IT department, I don't know.
By the way, I think that the problem here is that the 'parallel' port
transfer rate may be the problem... I have a horrible suspicion that
what is going on at the hardware level is:
while( there is data ){
get a SINGLE character;
check the parallel port for 'ready'
write a SINGLE character to the parallel port;
check the parallel port for 'status'
(time out on this is 1 msec?)
}
This would also explain the slow transfer rate...
On the other hand, since the LPD port method does NOT
expect allow data, it probably does:
while( there this data ){
get a BLOCK of characters;
while stuff left in the block:
check the parallel port for 'ready'
write a SINGLE character to the parallel port;
}
}
No check for status from printer would speed things up...
Just a wild guess...
Patrick
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