openssh-based file transfers (e.g. rsync, scp, ...) are running 40 (!!) times faster via IPv4 than IPv6

[Vincenzo Romano]

Il giorno mer 7 nov 2018 alle ore 19:38 Vincenzo Romano
<vincenzo.romano at notorand.it> ha scritto:>
> Il giorno mer 7 nov 2018 alle ore 19:30 michaelof at rocketmail.com
> <michaelof at rocketmail.com> ha scritto:
> >
> > Vincenzo,
> >
> >
> > thanks for answering !!!
> >
> > As I found out before that this slow down only happens for encrypted transmissions, I've followed your suggestion and
> > tested with a https-based download, from my Nextcloud instance on my VPS.
> >
> > Same slow speed when connecting via IPv6, and as fast as expected when connecting via IPv4.
> >
> > Just to confirm: There's NO dependency/relation between openssh and https, on Linux, correct? (Web Server is Apache)
> > If NO, sorry for wasting your time, and again THANK YOU for leading me into another direction!
> >
> >
> > Regards,
> > Michael
>
> libssl could be a common factor.
> Try FTP, please.

Nope, libssl isn't a common library.
Again , try FTP.

> > Am 07.11.18 um 19:05 schrieb Vincenzo Romano:
> > > Il giorno mer 7 nov 2018 alle ore 17:58 michaelof at rocketmail.com
> > > <michaelof at rocketmail.com> ha scritto:
> > >>
> > >> openssh 7.6p1-lp150.7.4 on OpenSuse Leap 15 (both server and client)
> > >>
> > >>
> > >>
> > >> Hi all,
> > >>
> > >>
> > >> first post to list, hopefully on-topic. Haven't found anything on the net, tried to ask at first in OpenSuse forums a
> > >> while ago (https://forums.opensuse.org/showthread.php/533588-rsnapshot-rsync-massive-performance-decrease) and today
> > >> opened a bug in OpenSuse's Bugzilla (https://bugzilla.opensuse.org/show_bug.cgi?id=1115075)
> > >>
> > >> As written in bug report, as general network issues could be excluded, any hints where to start, how to narrow down if
> > >> this is a specific openssh issue or something else?
> > >>
> > >>
> > >> Thanks in advance,
> > >> Michael
> > >
> > >
> > > Can you try the same transfer with a (totally) different protocol,
> > > like FTP, NFS, CIFS?
> > > This is to exclude any network-related slowdown.
> > >
>
>
>
> --
> Vincenzo Romano - NotOrAnd.IT
> Information Technologies
> --
> NON QVIETIS MARIBVS NAVTA PERITVS



-- 
Vincenzo Romano - NotOrAnd.IT
Information Technologies
--
NON QVIETIS MARIBVS NAVTA PERITVS