'hg push' hangs if used trough a ssh-tunnel

[Andrew Hughes]

----- Original Message -----
> Hi,
> 
> when pushing to our port repository
> http://hg.openjdk.java.net/ppc-aix-port/jdk7u/ I sometimes encounter
> strange hangs.
> 
> Because I am behind a corporate firewall, I have to use an SSH-tunnel
> to
> access the repository. I'm doing the following:
> 
> hg push ssh://simonis@
> <internel_tunnel_host>:<tunnel_port>/ppc-aix-port/jdk8/jdk
> pushing to ssh://simonis@
> <internel_tunnel_host>:<tunnel_port>/ppc-aix-port/jdk8/jdk
> Enter passphrase for key '<home_dir>/.ssh/id_rsa':
> searching for changes
> 
> After this message nothing more happens (for hours...). However if I
> interrupt the command with <Ctrl>-C I get the following:
> 
> ^Cinterrupted!
> remote: adding changesets
> remote: adding manifests
> remote: adding file changes
> remote: added 166 changesets with 654 changes to 470 files
> remote: snapshot taken
> 
> Notice that I don't get the final line "remote: notifying
> ppc-aix-port-dev at openjdk.java.net" which is usually printed after
> every
> successfull push but the mailing list is notified nevertheless (i.e.
> the
> push is complete and the corresponding notification mail is send to
> the
> list after I typed <Ctrl>-C). So actually the push succeeds but I'm
> nevertheless a little bit confused how long I have to wait until I
> can
> safely interrupt the hanging push:)
> 
> I suppose that the problem is caused by the SSH-tunnel which I have
> to use
> but I'm not sure. It only happens on the 'jdk' repository if I push
> many
> (i.e. several hundred) changesets.
> 
> Has anybody else encountered such problems and/or does anybody knows
> any
> workarounds?
> 
> I'm using Mercurial 2.0.2 on Ubuntu 12.04.
> The tunnel host uses:
> 
> debug1: Remote protocol version 1.99, remote software version
> OpenSSH_4.2
> debug1: match: OpenSSH_4.2 pat OpenSSH_4*
> debug1: Enabling compatibility mode for protocol 2.0
> debug1: Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1
> 
> Thank you and best regards,
> Volker
> 

I do know that the OpenJDK servers can be quite slow at pushing, because
they make ZFS snapshots, though it's a lot better than it used to be.

Do you have "ssh = ssh -C" in $HOME/.hgrc?  Having ssh at least use
compression might help a bit.
-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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