# mass\_downloader

**URL:** <https://discourse.obspy.org/t/mass-downloader/756>\
**Category:** Users Mailing List Archive\
**Tags:** archive\
**Created:** [March 3, 2018, 7:27am UTC](https://discourse.obspy.org/t/mass-downloader/756 "2018-03-03T07:27:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Blaz\_Vicic](https://discourse.obspy.org/letter_avatar_proxy/v4/letter/b/76d3ee/32.png) [@Blaz\_Vicic](https://discourse.obspy.org/u/Blaz_Vicic)\
**Post date:** [March 3, 2018, 7:27am UTC](https://discourse.obspy.org/t/mass-downloader/756/1 "2018-03-03T07:27:55Z")

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Hi.

I am trying to mass download some data of INGV, but I hit some problems on the way. I use the Continuous request as described here:  
. The waveforms start do download, then at some point i start to get msg as: If i retry from different IP it works again for some time, and then I get blocked… What to do? are INGV blocking the mass downloading? Thanks, Blaž

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**Author:** ![LionKrischer](https://discourse.obspy.org/user_avatar/discourse.obspy.org/lionkrischer/32/219_2.png) [@LionKrischer](https://discourse.obspy.org/u/LionKrischer)\
**Post date:** [March 5, 2018, 7:23am UTC](https://discourse.obspy.org/t/mass-downloader/756/2 "2018-03-05T07:23:30Z")

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Hi Blaz,

hmm - good question. I’ve downloaded a fair amount of data from the INGV and have not noticed that behavior - maybe they changed their policy. The mass downloader does send a lot of requests (it has to to work at all) but it tries to batch the request in a reasonable manner to be somewhat nice to data centers so I don’t think it does anything out of line. By default it launches up to 3 threads per data center to download in parallel (this seems to be a number the data centers are okay with) - you can try modifying this with `mdl.download(..., thread_per_client=1)`.

Can you contact the INGV and ask how to best proceed? Otherwise I can also do it.

Cheers!

Lion

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**Author:** ![Blaz\_Vicic](https://discourse.obspy.org/letter_avatar_proxy/v4/letter/b/76d3ee/32.png) [@Blaz\_Vicic](https://discourse.obspy.org/u/Blaz_Vicic)\
**Post date:** [March 5, 2018, 7:39am UTC](https://discourse.obspy.org/t/mass-downloader/756/3 "2018-03-05T07:39:08Z")

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Thanks, I will contact the INGV and see what can be done. Anyway, if I get some useful info, I’ll write it here.

Cheers,

Blaž