[openstreetmap/openstreetmap-website] Disk IO Performance (#2623)

[Legolash2o]

Hi,

I currently have the latest OpenStreetMap clone running on a VM on Azure - with the PostgreSQL on it's own server outside the VM (works fine). Currently running in Development as I haven't had chance to change to production yet.

I have to keep restarting the VM server hosting Rails every so often so it starts doing a big disk IO. From the Azure overview panel it shows that it was trying to read a large file with 100% Disk operations/sec.

Does the current implementation write to the disk (part from logs)? i.e. caching. I would have thought it would have been done in memory.

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