[obspy-users] arclink-0.4.7 data retrieval slow vs. arclink-0.4.6 ?

Christian Weidle cweidle at geophysik.uni-kiel.de
Thu Aug 11 12:45:40 CEST 2011


Perfect, fixed!

[2689] fixes the slowdown issue and [2690] speeds the requests a bit 
further by reducing routing requests.

just for documentation: time per waveform requests (incl. PAZ and 
coordinates)
versions <= arclink-0.4.6: ~4s
versions arclink-0.4.7/8: ~20s
arclink-0.4.8.dev2690: ~3s

Thanks and Cheers
Christian


On 08/11/2011 12:05 PM, Robert Barsch wrote:
> Hi Christian,
>
> this issue has been (hopefully) fixed with commit [2689] - commit [2690]
>   removes some redundant routing requests for getting PAZ and metadata.
>
> Please check out the latest obspy.arclink developer version and report
> back if you still hit the issue.
>
> Thanks for reporting + best regards,
> Robert
>
>
>
>> Thanks for the quick response,
>>
>> I'm aware that requesting PAZ and coordinates slows down the request but
>> the 4s could be acceptable for us.
>>
>> I attach logs of one run of the sample script for each version of
>> arclink with debug=True, as requested.
>> Even in the 0.4.6 version, there are 8 arclink requests (routing webdc,
>> data download grsn01.szgrf.bgr.de, and for each channel (routing grsn01,
>> metadata download)).
>> The repeated routing requests seem a bit redundant to me but I'm not too
>> familiar with ArcLink, so maybe I'm missing something here?
>>
>> Anyway, from the logs I cannot see why the arclink-0.4.7/8 requests are
>> slower?
>>
>> Puzzled,
>> Christian
>
>
>
>

-- 
Dr. Christian Weidle
Institut für Geowissenschaften
Abt. Geophysik
Christian-Albrechts-Universität zu Kiel
Otto-Hahn-Platz 1
24118 Kiel
GERMANY
++++++++++++++++++++++++++++++++++++++++++
tel:   +49 431 880 3909
email: cweidle at geophysik.uni-kiel.de
++++++++++++++++++++++++++++++++++++++++++





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