[Bf-committers] move prebuilt libs from svn to git?

[Dan McGrath]

Hi,

Really, I would need to see a capture from both sides to dig into it. I
need to see what is being sent, and what is received on each side. There
could be some weird firewall stuff happening that is causing fragmentation
or blocking TCP options, or window scaling issues, etc.

As for the default settings for tortoisesvn, the connection stuff I was
referring to was about TCP/IP behaviour, rather than an application
setting. Either way, I need to see what is actually happening. The fact
that I can pull 5-8MB/sec (~40mbit) from Canada and not have a single
interruption is telling. Granted, the host only has around 100 or 200mbit
allocated, iirc. Multiply that by a few dozen people and you have a problem.

For a simpler test, maybe try a large svn check, perhaps some old FreeBSD
ports svn repo if you can find one, something also in .NL, and see how it
goes, just to help eliminate your PC/firewall. Worst case scenario, you can
also poke me in chat and we can try some server side and client side
captures.

TBH though, 1gig uplink just isn't a whole lot to serve our user base ;)

On Fri, Jun 17, 2022 at 11:45 AM Tom M <letterrip at gmail.com> wrote:

> On Fri, Jun 17, 2022 at 5:20 AM Dan McGrath <danmcgrath.ca at gmail.com>
> wrote:
> >
> > Hi Tom,
> >
> > Long time no see :)
> >
> > I did some tests from home and found that, aside from slow speeds, I was
> able to checkout at least 5 or 6 gig of the bf-blender repo without error
> or having to retransmit.
>
> Yeah, looks like I was mistaking really slow download of the larger
> (.7 GB) libraries as freezing.  I was averaging about .3 MB/s.  I used
> a different SVN client and saw that it was indeed downloading (the
> sliksvn doesn't provide any feedback on files in progress, only once a
> file completes) - It was taking about 40 minutes for each of the
> larger files.  It did complete eventually after about 5 hours.
>
> > I took the liberty of packet capturing the stream from my PC's POV, and
> placed them in the ftp download area[1], if you care to take a look.
> >
> > The gist is that I was able to get around 5MB/sec for at least 5G of the
> checkout, before I cancelled it.
> >
> Interesting, I usually get up to 3 MB/s download here normally from
> other sources, but was typically getting .3 MB/s, with occasional
> bursts of higher speed to a max of .8 MB/s when it wasn't downloading
> the large files.
>
> > Now, my IP is a bit of a special case, so I am wondering if you are just
> hitting the server so hard with http requests in separate sockets, or
> something extreme, that is causing the system to block you for a period of
> time. For comparison, my PC only had about 4 sockets open to the server for
> the transfer. I would be curious to know if you are doing pipelining, or
> sending each request in a separate connection.
> >
> Whatever the sliksvn and tortoisesvn defaults are, I'd assume they are
> setup for typical usage.
>
> > If you can, the next time it happens, see if you are unable to visit
> Phabricator or resume the svn checkout process. It may not be a firewall
> issue, but without seeing some packet captures, I wouldn't be able to
> really guess. Ideally, try to capture a few packets, until failure. At the
> very least, you will need to snap 20b+20b=40b for IP+TCP headers, but I
> would suggest a tad higher, maybe 64b.
> >
> > Cheers,
> >
> > Dan
> >
> > [1] - https://download.blender.org/ftp/dan/svn-checkout/
> >
> >
> >
> > On Thu, Jun 16, 2022 at 2:43 PM Tom M via Bf-committers <
> bf-committers at blender.org> wrote:
> >>
> >> When checking out the libraries from SVN following the directions on
> >>
> >> https://wiki.blender.org/wiki/Building_Blender/Windows
> >>
> >> The svn checkout of the libraries fails with significant frequency,
> >>
> >> if you google you might stumble across using make svnfix
> >>
> >> https://www.mail-archive.com/bf-blender-cvs@blender.org/msg151996.html
> >>
> >> Even after using it, I'm still having to do Ctrl C, and then make
> >> svnfix repeatedly (it downloads some files, than randomly freezes,
> >> sometimes after 20-50 files, sometimes after 100's of files).
> >>
> >> Git doesn't seem to have any problems, though.
> >>
> >> So might we consider migrating the libs to git, rather than using SVN?
> >>
> >> LetterRip
> >> _______________________________________________
> >> Bf-committers mailing list
> >> Bf-committers at blender.org
> >> List details, subscription details or unsubscribe:
> >> https://lists.blender.org/mailman/listinfo/bf-committers
> >
> >
> >
> > --
> > Cheers,
> > Danny
> >
> > ----------------------------------------------------------
> > Danny McGrath - danmcgrath.ca at gmail.com
> > GPG key: EDF6 AFF5 2086 F93A 1F59 36A5 44B6 26F3 6968 71CA
>


-- 
Cheers,
Danny

----------------------------------------------------------
Danny McGrath - danmcgrath.ca at gmail.com
GPG key: EDF6 AFF5 2086 F93A 1F59 36A5 44B6 26F3 6968 71CA