[Expectperl-discuss] Beginner Questions: Reference & How to Handle Large Output

[Rick_Jasper/Delphion%<DEL...@de...>]

David Blackstone wrote,
>>  If you have the third edition camel, look up the command for how to
>> profile your code.  I believe it involves running a command called
dprofpp ...

I know exactly which line of Perl I'm on.  It's the expect() call that is
waiting for the command output to get all transferred.

Roland Giersig wrote,
>> Ugh, and there is no other way to do that?  Is it really an interactive
>> application?  How about just doing a ssh command and capture the
>> output?  Or having the remote system dump that data to a disk and then
>> transfer that with scp?

Yes, this is the approach I decided to take and it works fine.  I posted
the question in order to understand what Expect was doing under the covers,
why it was so slow, and whether or not there was anything I could tweak to
speed things up.  Yes, I can code around it, but this provides me a
learning opportunity to better understand Expect.  Also to find better
learning material.

>> That's no wonder.  Expect keeps a buffer for matching, and if you
>> do not set max_match ...
I tried setting max_match to 600MB.  It didn't help at all.  Even if I
wasn't trying to match anything, the data transfer was very slow.

>> IMHO your best bet is to change the approach to the problem, see my
suggestions above.
I agree, and that's what I am doing, but I'd still like to know if there's
anything I can do to speed up Expect's data collection.  It sounds like no,
there isn't.

Rick Jasper