[ckan-dev] Slow upload

Harald von Waldow harald.vonwaldow at eawag.ch
Wed Jan 16 18:07:51 UTC 2019

Hi everybody!

I am suffering from very slow upload speeds. I have a default setup,
Apache proxied by NGINX. NGINX buffers, so I can separate +/- the time
the data is on the wire from the time it takes it to travel from NGINX
to disk.

Network speed is as expected, but the second part takes very long.

E.g. a 6.2 GiB file uploads to NGINX with 116 MiB/s but dripples from
there to the disk at  24 MiB/s. During that period, Apache (ckan)
almost maxes out the CPU.

I can exclude that the disk is the problem.

Any ideas?


Harald von Waldow
ICT Services
Research Data Management
Ueberlandstrasse 133
8600 Duebendorf
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