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From: Jeffrey Walton <noloader@gmail.com>
To: Jeff King <peff@peff.net>
Cc: Git List <git@vger.kernel.org>
Subject: Re: Git port to Debian SH4 may have trouble
Date: Tue, 29 Nov 2022 16:49:30 -0500	[thread overview]
Message-ID: <CAH8yC8=zv30qNKVGZcT02hfTWgn4x1RCEUioB=jG9yq9X_Qp=g@mail.gmail.com> (raw)
In-Reply-To: <Y4ZXRx4mf0UMk4H6@coredump.intra.peff.net>

On Tue, Nov 29, 2022 at 2:02 PM Jeff King <peff@peff.net> wrote:
>
> On Tue, Nov 29, 2022 at 12:01:01PM -0500, Jeffrey Walton wrote:
>
> > This is a crummy bug report... I am  testing on Debian Unstable within
> > a SH4 Chroot. I'm seeing a hang during a git pull. Eventually I have
> > to CTRL+C, which results in "fatal: fetch-pack: invalid index-pack
> > output."
>
> The message is probably a red herring. Once you terminate index-pack,
> the fetch-pack process reading from it will see EOF before reading the
> expected "pack ..." line, and generate that message.
>
> So the hang is probably the only interesting part.
>
> > (sh4) debian-chroot:~# git clone -vv https://github.com/weidai11/cryptopp
> > Cloning into 'cryptopp'...
> > POST git-upload-pack (175 bytes)
> > want e9cbc4698a6b3ed067910862ad1355069f348d2b (HEAD)
> > want e9cbc4698a6b3ed067910862ad1355069f348d2b (refs/heads/master)
> > ...
> > want 511806c0eba8ba5b5cedd4b4a814e96df92864a6 (refs/tags/CRYPTOPP_8_7_0)
> > POST git-upload-pack (gzip 1602 to 825 bytes)
> > remote: Enumerating objects: 28448, done.
> > remote: Counting objects: 100% (68/68), done.
> > remote: Compressing objects: 100% (50/50), done.
> > remote: Total 28448 (delta 29), reused 49 (delta 18), pack-reused 28380
> > Receiving objects: 100% (28448/28448), 27.01 MiB | 4.30 MiB/s, done.
> > Resolving deltas:   0% (0/20757)
> > ^Cfatal: fetch-pack: invalid index-pack output
>
> If we're in the "resolving deltas" section, then that means we're
> probably not hanging on receiving input from the remote side. At this
> point we should have gotten all of the data and would be CPU-bound
> reassembling deltas and computing their hashes.
>
> Just a hunch, but does:
>
>   git config --global pack.threads 1
>
> help? The delta resolution is multi-threaded, but nothing else in the
> clone should be.

Yes, `git config --global pack.threads 1` allowed things to continue.
The check-out was successful.

Jeff

  reply	other threads:[~2022-11-29 21:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-11-29 17:01 Git port to Debian SH4 may have trouble Jeffrey Walton
2022-11-29 19:02 ` Jeff King
2022-11-29 21:49   ` Jeffrey Walton [this message]
2022-11-29 22:14     ` Jeff King
2022-11-29 22:33       ` Jeffrey Walton

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