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Subject: Re: Please report your indexing speed
From: Jan Lehnardt <jan@apache.org>
In-Reply-To: <BCFF40D0-D247-4AEE-9700-31C148004C68@apache.org>
Date: Sun, 4 Mar 2012 18:24:19 +0100
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References: 
 <CAN-3CBKk7rykwrwdWwizwPGOUk41xP-uYFG-i49=nZsOMZe-VQ@mail.gmail.com>
 <BCFF40D0-D247-4AEE-9700-31C148004C68@apache.org>
To: dev@couchdb.apache.org

I updated the google doc with results from an EC2 cc1.4xlarge instance =
(details are in the spreadsheet)

This on EBS and Ubuntu 11.04/64.

The results are bit different from the previous machine, but that isn't =
at all unexpected.

tl;dr: for small docs (10bytes, 100bytes) 1.2.x-filipe beats 1.2.x and =
1.1.1 , for large docs (1000bytes), 1.2.x beats 1.2.x-filipe  (6% =
difference).

This still makes me want to include Filipe's patch into 1.2.x.

Cheers
Jan
--=20

On Mar 4, 2012, at 10:24 , Jan Lehnardt wrote:

> Hey all,
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> I made another run with a bit of a different scenario.
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>=20
> # The Scenario
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> I used a modified benchbulk.sh for inserting data (because it is an =
order of magnitude faster than the other methods we had). I added a =
command line parameter to specify the size of a single document in bytes =
(this was previously hardcoded in the script). Note that this script =
creates docs in a btree-friendly incrementing ID way.
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> I added a new script benchview.sh which is basically the lower part of =
Robert Newson's script. It creates a single view and queries it, =
measuring execution time of curl.
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> And a third matrix.sh (yay) that would run, on my system, different =
configurations.
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> See https://gist.github.com/1971611 for the scripts.
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> I ran ./benchbulk $size && ./benchview.sh for the following =
combinations, all on Mac OS X 10.7.3, Erlang R15B, Spidermonkey 1.8.5:
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> - Doc sizes 10, 100, 1000 bytes
> - CouchDB 1.1.1, 1.2.x (as of last night), 1.2.x-filipe (as of last =
night + Filipe's patch from earlier in the thread)
> - On an SSD and on a 5400rpm internal drive.
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> I ran each individual test three times and took the average to compare =
numbers. The full report (see below) includes each individual run's =
numbers)
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> (The gist includes the raw output data from matrix.sh for the 5400rpm =
run, for the SSDs, I don't have the original numbers anymore. I'm happy =
to re-run this, if you want that data as well.)
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> # The Numbers
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> See =
https://docs.google.com/spreadsheet/ccc?key=3D0AhESVUYnc_sQdDJ1Ry1KMTQ5enB=
DY0s1dHk2UVEzMHc for the full data set. It'd be great to get a second =
pair of eyes to make sure I didn't make any mistakes.
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> See the "Grouped Data" sheet for comparisons.
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> tl;dr: 1.2.x is about 30% slower and 1.2.x-filipe is about 30% faster =
than 1.1.1 in the scenario above.
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>=20
> # Conclusion
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> +1 to include Filipe's patch into 1.2.x.
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>=20
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> I'd love any feedback on methods, calculations and whatnot :)
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> Also, I can run more variations, if you like, other Erlang or =
SpiderMokney versions e.g., just let me know.
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>=20
> Cheers
> Jan
> --=20
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> On Feb 28, 2012, at 14:17 , Jason Smith wrote:
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>> Forgive the clean new thread. Hopefully it will not remain so.
>>=20
>> If you can, would you please clone =
https://github.com/jhs/slow_couchdb
>>=20
>> And build whatever Erlangs and CouchDB checkouts you see fit, and run
>> the test. For example:
>>=20
>>   docs=3D500000 ./bench.sh small_doc.tpl
>>=20
>> That should run the test and, God willing, upload the results to a
>> couch in the cloud. We should be able to use that information to
>> identify who you are, whether you are on SSD, what Erlang and Couch
>> build, and how fast it ran. Modulo bugs.
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