[OPEN-ILS-GENERAL] Evergreen & Software Performance Analysis

[Rogan Hamby]

Hi Joshua,

I don't know if you had a chance to see my message below so I'll copy you
in directly as well and maybe touch base again after labor day.  With the
Evergreen community having a rich collection of input from various
contributors (many like yourself paid to do individual development by
community members) all participating in the open source spirit and putting
their code out there, allowing others to build on top of it or modify it or
package it into master it would be exciting to see this work since you've
indicated it's had a big impact for your customers.

I did a quick mark mail search since I sometimes lose emails to spam
filters and noticed that back in Feb you mentioned that your Evergreen
customer has been KCLS.  I know that at the conference they talked about
setting up a public repo that would be available right after the
conference.  Maybe they can chime in on an update on that?


On Fri, Aug 9, 2013 at 11:52 AM, Rogan Hamby <rogan.hamby at yclibrary.net>wrote:

> HI Josh,
>
> Can you share with folks some more specifics?
>
> For example:
>
> In regards to optimizing the conf file can you share what kind of
> optimizations and the benchmarks?  E.g. with X records we see Y performance
> in activity Z.
>
> A lot of other changes obviously touch on changes to code and/or schema
> changes.  Are these going to be released on a public repo or fed back into
> master?
>
>
>
>
>
> On Thu, Aug 8, 2013 at 2:01 PM, Joshua D. Drake <jd at commandprompt.com>wrote:
>
>>
>> On 08/07/2013 10:12 AM, Rogan Hamby wrote:
>>
>>> I'm guessing maybe Joshua doesn't keep track of the list serv but is
>>> there someone else from Command Prompt or whomever they did the
>>> development work for that could chime in?  When he says they've made
>>> improvements do those include GPLed code?
>>>
>>
>> Sorry folks, I do watch this list but not as much as the postgresql
>> lists. We have also been very busy. Here are some of the basic things we
>> have done:
>>
>> 1. Optimized the postgresql.conf, it is amazing how much you can get from
>> some minor tweaks after some performance analysis.
>>
>> 2. Converted some of the procedures to C, for example translate_isbn1013
>>
>> 3. Modified the holds process to use a look up table.
>>
>> 4. Changed the process for holds so they don't indefinitely exist but get
>> migrated out for reporting but does not affect performance of the active
>> table.
>>
>> 5. Partitioning of larger tables
>>
>> 6. Upgraded versions of PostgreSQL to more modern versions (this can also
>> result in noticeable gains in performance).
>>
>> 7. Lots of query tuning, adding indexes where appropriate, increasing
>> maintenance on particular tables to reduce bloat more aggressively etc...
>>
>> As well as various other things (stabilizing the system so there isn't
>> weird overloads, unexpected apache load events etc..). It certainly has
>> been a rather wild ride over the last 9 months as we get further and
>> further into the adventure that is the Evergreen software.
>>
>> Sincerely,
>>
>> Joshua D. Drake
>>
>>
>>
>>
>> --
>> Command Prompt, Inc. - http://www.commandprompt.com/  509-416-6579
>>
>> PostgreSQL Support, Training, Professional Services and Development
>> High Availability, Oracle Conversion, Postgres-XC, @cmdpromptinc
>> For my dreams of your image that blossoms
>>    a rose in the deeps of my heart. - W.B. Yeats
>>
>
>
>
> --
>
> Rogan Hamby, MLS, CCNP, MIA
> Managers Headquarters Library and Reference Services,
> York County Library System
>
> "You can never get a cup of tea large enough or a book long enough to suit
> me."
> -- C.S. Lewis <http://www.goodreads.com/author/show/1069006.C_S_Lewis>
>



-- 

Rogan Hamby, MLS, CCNP, MIA
Managers Headquarters Library and Reference Services,
York County Library System

"You can never get a cup of tea large enough or a book long enough to suit
me."
-- C.S. Lewis <http://www.goodreads.com/author/show/1069006.C_S_Lewis>
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