Willy Tarreau wrote:

What would you consider a good indicator of its reliability? Would
running flawlessly for a week straight be enough of testing?

The fact that it runs a lot longer than previous run is a natural
indicator of reliability. However it's not an indicator of correctness.

I sure agree that it isn't any proof of its correctness but I can only say that it's been running for more than 40 hours now and I don't see any problems. I'll spare you the details of how many times the backend servers crashed in that time ;-)

> Whatever we spot, I'll keep in mind that we can get it to crash on
> your machine in 31-bit mode. If ever I come across a vicious bug
> that could explain that, I'd be happy to ask you to give it a try.

And I'll be happy to give it a go if I only still have access to that platform. Just in case you ever need it, you can run Debian (or, I imagine, any other distribution which supports s390/s390x) under the Hercules VM, here's a very nice HOWTO http://www.josefsipek.net/docs/s390-linux/hercules-s390.html. I haven't tried using HAProxy on it though but I guess there shouldn't be any issues.

Last, are you aware of any version that has worked reliably on
your platform ?

Not really, it's the first time we're using HAProxy on that platform.

OK so I wish you that it works well for this first time :-)

Cheers!

--
Dariusz Suchojad

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