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From Dave Fisher <dave2w...@comcast.net>
Subject Re: Registration and Update Services - What Will Be The Load?
Date Wed, 15 Aug 2012 16:26:41 GMT

On Aug 15, 2012, at 8:50 AM, Rob Weir wrote:

> On Wed, Aug 15, 2012 at 10:32 AM, Oliver-Rainer Wittmann
> <orwittmann@googlemail.com> wrote:
>> Hi,
>> 
>> 
>> On 15.08.2012 16:00, Dave Fisher wrote:
>>> 
>>> Hi,
>>> 
>>> Apologies to the Apache Infra team, the load caused by implementing
>>> INFRA-5112 caused trouble.
>>> 
>>> The changes to update*.services.openoffice.org to point to
>>> www.openoffice.org
>>> was reverted.
>>> 
>>> This was due to added load on the Apache Infrastructure.
>>> 
>>> Before we can proceed with INFRA-5112 and INFRA-5144 we absolutely must
>>> have
>>> some estimates about the volume of requests that will be received.
>>> 
>> 
>> When I saw the problems on www.openoffice.org in the morning I already
>> suggested that this might be related to the established redirects. I
>> reported my assumption at #asfinfra in the morning.
>> If I remembering it correct, Kay S. and Joe S. already observed something
>> like this earlier this year.
>> 
>> Unfortunately, I can not provide any volume.
>> In the past more than 100 million download of OpenOffice.org package had
>> been counted by the OpenOffice.org community. I do not know how much OOo
>> installation are really active and how the distribution between the
>> different versions are.
>> 
>> What I know is the following:
>> (1) update38.services.openoffice.org is used by OOo 3.4 Beta and released
>> AOO 3.4 - a redirect for it has been established at 2012-05-21 and the
>> traffic can be handled.
>> (2) update36.services.openoffice.org is used by OOo 3.3 - a redirect for it
>> has been established at 2012-06-04 and the traffic can be handled.
>> (3) update35|34.services.openoffice.org is used by OOo 3.2.1 and OOo 3.2 -
>> redirects for then have been established at 2012-07-12 and the traffic can
>> be handled.
>> (4) update33.services.openoffice.org is _not_ used - a redirect is _not_
>> necessary. Does occur any traffic on this URL?
>> (5) update32.services.openoffice.org is used by OOo 3.1.1 and OOo 3.1 - a
>> redirect has been requested and was established today. Due to the server
>> load it has been reverted. Is the traffic data available?
>> (6) update31.services.openoffice.org is _not_ used - a redirect is _not_
>> necessary. Does occur any traffic on this URL?
>> (7) update30.services.openoffice.org is used by OOo 3.0.1 and OOo 3.0. Does
>> occur any traffic on this URL?
>> (8) update.services.openoffice.org seems to be used by OOo 2.x version (at
>> least my test installation of OOo 2.2 uses it). Is the traffic data
>> available? When I remember it correct Kay S. and Joe S. observed the above
>> mentioned problems earlier this year with this URL.
>> 
>> Is it possible that somebody from the Apache Infrastructure can provide a
>> view on which URL the traffic load was soo high that the servers got in
>> trouble?
>> 
> 
> That would be good to know.  Once we know we could verify behavior
> with a change to a local hosts file.  One scenario that could
> conceivably cause a problem would be if some old version of OOo
> behaved badly when it gets a 404 error, such as getting into a retry
> loop.   We know this did not happen for OOo 3.3.0, 3.2.1 or 3.2.0.
> But it is worth confirming with earlier versions, if the HTTP logs
> suggest this is happening.

We'll have access to full logs tonight / tomorrow.

Regards,
Dave

> 
> -Rob
> 
>> Best regards, Oliver.


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