[tahoe-dev] multi-second delays when uploading mutable files Re: warning: Boing-Boinging imminent

[Zooko O'Whielacronx]

On Wed, Sep 29, 2010 at 5:34 PM, Greg Troxel <gdt at ir.bbn.com> wrote:
>
> I have updated sunpal7 (62nlabgfiuzbfseufd2yoymbjzsenbuz) to 1.8.0
> release.  I just did a few 'tahoe ls' on it after starting, and the
> local stats show nothing unremarkable about linuxpal's answer times.
> The only response time that jumped out at me was 2.5s, once, from
> xflgj7cg.

That's pubgrid.tahoe-lafs.org! soultcer at crashdown . Maybe it is
heavily loaded from Boing Boingers? :-)

> Perhaps I'm not experienced enough, but I haven't been bothered by 1s
> delays -- the problems that seem serious are the fragility of keeping a
> directory healthy by repairing it when servers come and go as much as
> they do in the pubgrid and I get the dreaded Uncoordinated Write Error.

Those sound like serious issues, too! Does #1209 cover all of the
issues that you've seen as far as you can tell?

> 'tahoe manifest' is hanging on sunpal7.  Are we sure there no
> endian/wordsize bugs?  sunpal7 is sparc64 which is LP64 and big endian,
> so I am curious if there has been confirmed success on LP64 and/or big
> endian.

Could we run a buildslave on sunpal7? That would be the ideal way to
answer this question.

Regards,

Zooko

http://tahoe-lafs.org/trac/tahoe-lafs/ticket/1209# repair of
directories (all immutable files?) should not increment the sequence
number