[syslinux] R: Re: R: Re: PXEbooting very slow
H. Peter Anvin
hpa at zytor.com
Fri Jun 5 13:53:59 PDT 2009
pfranz73 at tiscali.it wrote:
>
> Using tftpd32 v3.33 I saw these problems regularly beginning from v3.
> 81. All 3.80 versions show the problem only sometimes, so I switched
> back to tftpd32 v3.10 which exposes problems better. Here timeouts are
> always present beginning with 3.76, but there are duplicate
> acknowledges from version 3.80-pre1.
>
> Here are the logs, all with
> tftpd32 v3.10. As you can see, timeouts are much less in v3.76. This
> outcoming is quite stable over various attempts I made.
>
The 3.8x series is much more aggressive at retransmitting when it
doesn't get a reply. Perhaps it is too aggressive with respect to the
RRQ, but that should normally only cause a stale connection which should
eventually time out (not impeding the progress of the actual
transmissions). Furthermore, it should not affect a download already in
progress.
If this is something that has been addressed in the later versions of
tftpd32, I'm not all that interested in addressing it.
-hpa
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