On 08-03-14 11:20, Cambridge Cycling Campaign - Simon Nuttall wrote:
A whole world nominatim installation started on 2 Feb finished on 7
Mar, and is now running at:
http://nominatim.cyclestreets.net/
It has entered the catch up phase - which began with data from 21 Jan.
It seems to be taking a day to catch up with a day's updates - so it
is not making much progress and is heavily i/o bound, even on a 32GB
VM with 2 allocated processors.
Do all these timings seem normal?
What could I do to improve performance?
Simon
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Most Virtual Machines lack IO performance. Even if underlying storage
consists of SSD's, you're only getting a slice of it. I would suggest
to assign a few more VCPU's , 2 seems a bit low. But this sounds like
a true I/O related issue.
A 'real' machine with 32GB on performant SSD's is probably the minimum
for a planet import. (I believe 64GB is recomended for this sort of
install). I would definitely blame IO limits here.
Glenn
--
"Everything is going to be 200 OK."
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