Mailing List Archive: "Whitescreen" issue with varnish 1.0.2-2 (debian etch)

"Whitescreen" issue with varnish 1.0.2-2 (debian etch)

denis at startsiden

May 15, 2007, 11:27 PM

Post #1 of 6 (632 views)

Hi all,

I have begun testing varnish on our main server pool, and the initial tests worked smoothly.
However as soon as I put the box under load (gave it a slice of our production traffic) it started "fumbling" requests. I know it's not a very good description, but I have a hard time understanding exactly what goes wrong where.

I did some logging, however due to the fact that the error does not appear until a sufficient amount of traffic hits the system, the logs are quite large. So I really wondered what I should start looking for? What kind of logmessages?

During my trials I stripped the Varnish config that debian ships to make sure none of those settings were causing trouble. Also I did test running Apache2.2 on it's own on that box, and that works out fine, nothing similar happens. I also disabled sendfile as per PHKs instructions.

I will try to compile a newer build, and do some more testing, but any pointers as to the kind of logentries I should look for would be excellent.

Regards
--
Denis Braekhus - Teknisk Ansvarlig ABC Startsiden AS
http://www.startsiden.no

"Whitescreen" issue with varnish 1.0.2-2 (debian etch) [ In reply to ]

Kenneth.Rorvik at hio

May 15, 2007, 11:45 PM

Post #2 of 6 (611 views)

I saw the same problems with 1.0.2 on redhat - empty documents returned
after a while, possibly related to filling up the disk backend file.

1.0.3 fixed it here, I didn't look deeper into it.

--
Kenneth R?rvik, IT HiO
Tlf 22 45 20 83
Kenneth.Rorvik at hio.no

"Whitescreen" issue with varnish 1.0.2-2 (debian etch) [ In reply to ]

denis at startsiden

May 16, 2007, 1:29 AM

Post #3 of 6 (615 views)

----- Kenneth R?rvik <Kenneth.Rorvik at hio.no> wrote:
> I saw the same problems with 1.0.2 on redhat - empty documents
> returned
> after a while, possibly related to filling up the disk backend file.
>
> 1.0.3 fixed it here, I didn't look deeper into it.

1.0.3 worked here too. I always intended to run 1.0.3, but I wanted to test the etch included package just for the fun of it.
It's a bit scary that the package in etch can give a newcomer to Varnish the impression that it is not really stable/production ready though, I am afraid new users could get a bad start.

I wanted to update the VarnishOnDebian wiki page with a small note on this situation, but it seems I need to be granted edit permissions?

Regards
--
Denis Braekhus - Teknisk Ansvarlig ABC Startsiden AS
http://www.startsiden.no

"Whitescreen" issue with varnish 1.0.2-2 (debian etch) [ In reply to ]

denis at startsiden

May 16, 2007, 2:08 AM

Post #4 of 6 (614 views)

----- Ingvar Hagelund <ingvar at linpro.no> wrote:
> Rumors says 1.0.4 is on the stairs, banging at the door. It will
> probably include an update to the Debian package.
> I don't know if changes/updates will trickle into etch over the time.
> Stig, Lars?

For that to happen someone would have to backport all the fixes to 1.0.2, right?
It's probably a more workable alternative to somehow provide an updated debian (etch compatible) package outside the official repository. But this is all speculation on my part of course.

Regards
--
Denis Braekhus - Teknisk Ansvarlig ABC Startsiden AS
http://www.startsiden.no

"Whitescreen" issue with varnish 1.0.2-2 (debian etch) [ In reply to ]

ingvar at linpro

May 16, 2007, 2:15 AM

Post #5 of 6 (612 views)

* Kenneth R?rvik
>> I saw the same problems with 1.0.2 on redhat - empty documents
>> returned after a while, possibly related to filling up the disk backend file.

* Denis Br?khus
>> 1.0.3 fixed it here, I didn't look deeper into it.
>
> 1.0.3 worked here too. I always intended to run 1.0.3, but I wanted to test the etch included package just for the fun of it.
> It's a bit scary that the package in etch can give a newcomer to Varnish the impression that it is not really stable/production ready though, I am afraid new users could get a bad start.

Rumors says 1.0.4 is on the stairs, banging at the door. It will
probably include an update to the Debian package.

I don't know if changes/updates will trickle into etch over the time.
Stig, Lars?

Ingvar

--
N?r alt annet feiler: Symlink

"Whitescreen" issue with varnish 1.0.2-2 (debian etch) [ In reply to ]

May 16, 2007, 6:05 AM

Post #6 of 6 (616 views)

Denis Br?khus <denis at startsiden.no> writes:
> I wanted to update the VarnishOnDebian wiki page with a small note on
> this situation, but it seems I need to be granted edit permissions?

Done.

DES
--
Dag-Erling Sm?rgrav
Senior Software Developer
Linpro AS - www.linpro.no