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Groups > comp.os.linux.networking > #4707

Re: Long delay when starting slrnpull

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On 2020-11-15, Jorgen Grahn <grahn+nntp@snipabacken.se> wrote:

> On Sun, 2020-11-15, Charlie Gibbs wrote:
>
>> 13:42:28.391109 IP news.newsguy.com.nntp > cjglap2.33958: Flags [P.], seq 1:44, ack 1, win 1040, options [nop,nop,TS val 2806080439 ecr 959274415], length 43
>
> ... but then it took 28 seconds for the NNTP server to send something
> on it.  It /should/ send a welcome message like "200 wombatvax news
> server ready - posting ok" -- the length of 43 bytes roughly matches
> that.
>
> Unless your gateway drops the first packets from mewsguy, forcing it
> to retransmit, it's actually newsguy causing the delay.

I suspect there's something wrong with my gateway.  I always get the
delay at home, but I never get it at the office.  I'll try the same
experiment when I get to the office on Tuesday.

> Perhaps newsguy does something else first, like a reverse DNS lookup
> on your IP, and /that/ is what slows down?  Then you'd see the exact
> same delay every time -- the time before newsguy gives up on the DNS
> lookup.
>
> You could use online reverse DNS lookup services on your various IP
> addresses, to see if one is broken.

Thanks for the hints, I'll continue puttering.  I'm wondering whether
this also has something to do with the way my wife's Macbook sometimes
hangs while downloading web pages...

-- 
/~\  Charlie Gibbs                  |  "Some of you may die,
\ /  <cgibbs@kltpzyxm.invalid>      |  but it's sacrifice
 X   I'm really at ac.dekanfrus     |  I'm willing to make."
/ \  if you read it the right way.  |    -- Lord Farquaad (Shrek)

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Thread

Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-15 04:31 +0000
  Re: Long delay when starting slrnpull Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-11-15 08:00 +0000
    Re: Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-15 18:03 +0000
  Re: Long delay when starting slrnpull Richard Kettlewell <invalid@invalid.invalid> - 2020-11-15 11:49 +0000
    Re: Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-15 18:03 +0000
      Re: Long delay when starting slrnpull Richard Kettlewell <invalid@invalid.invalid> - 2020-11-16 17:27 +0000
        Re: Long delay when starting slrnpull Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2020-11-17 00:18 +0000

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