Re: [Treebase-devel] Fwd: Treebase Dev problems

[Rutger V. <R....@re...>]

Hey Carl,

production isn't that much more ironclad to be honest. If a user is
doing some serious harvesting of dozens/hundreds of requests for
studies there's a good chance some of those are going to be ones that
will construct long running queries to re-constitute all the data in a
study.

Until we have some caching strategy there's not really a good
recommendation to make for rate of calls: even relatively low rates
(several seconds apart, say) may be able to bring the server to its
knees.

Rutger

On Tue, Nov 15, 2011 at 12:48 AM, Carl Boettiger <cbo...@gm...> wrote:
> Based on the logs it looks like that's happening due to calls from some user
> of my treebase package.  I'm switching it over to call only the production
> server, not the development server.  I'll also see what I can do to prevent
> the user from making too high a rate of queries.  Sorry about this.  Any
> suggestions/guidelines for rate of calls?
>
> Carl
>
> On Mon, Nov 14, 2011 at 3:04 PM, Hilmar Lapp <hl...@ne...> wrote:
>>
>> Perhaps some URLs to the dev site that are running stray?
>>
>> -hilmar
>> Sent with a tap.
>> On Nov 14, 2011, at 4:10 PM, William Piel <wil...@ya...> wrote:
>>
>>
>> Is anyone hitting dev with a lot of queries (e.g. asking for
>> publication=="Nature") ?  Or is there anything else in these logs that
>> indicates what might be taking down treebasedev ? (please see the attached
>> logs)
>> Admittedly, it doesn't take much to cause a denial-of-service... But I was
>> thinking that it might be in our group, seeing as dev is being hit.
>> bp
>>
>> Begin forwarded message:
>>
>> From: Mattison Ward <mat...@ne...>
>> Date: November 14, 2011 4:12:35 PM EST
>> To: William Piel <wil...@ya...>, Harry Shyket
>> <har...@ya...>
>> Cc: David Palmer <dav...@ne...>
>> Subject: Treebase Dev problems
>>
>> Hi Bill and Harry.
>>
>> Starting late last night, the treebasedev tomcat process has been
>> overloading the server.  I restarted tomcat several times today but
>> after a few hours the problem occurred again.  No changes have been
>> made to the system recently and I don't see any deployments from
>> Hudson recently either.
>>
>> I have the treebasedev tomcat service shut down now.
>>
>> I have attached the logs for you to review to see if it looks like an
>> application problem.  I can send them in a different format if you
>> don't like tgz files.
>>
>> Regards,
>>
>> Mattison
>>
>> ---------- Forwarded message ----------
>> From: root <ro...@tr...>
>> Date: Mon, Nov 14, 2011 at 4:07 PM
>> Subject: treebaselogs
>> To: mat...@gm...
>>
>>
>> logs
>>
>>
>>
>> --
>> Mattison Ward
>> NESCent at Duke University
>> 2024 W. Main Street, Suite A200
>> Durham, NC 27705-4667
>> 919-668-4585 (desk)
>> 919-668-4551 (alternate)
>> 919-668-9198 (fax)
>>
>> <logs.tgz>
>>
>>
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>
>
>
> --
> Carl Boettiger
> UC Davis
> http://www.carlboettiger.info/
>
>
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-- 
Dr. Rutger A. Vos
School of Biological Sciences
Philip Lyle Building, Level 4
University of Reading
Reading, RG6 6BX, United Kingdom
Tel: +44 (0) 118 378 7535
http://rutgervos.blogspot.com