[ome-users] Can somebody explain the pyramid building concept to me?

[Josh Moore]

On Aug 28, 2012, at 7:17 AM, Jake Carroll wrote:

> Hi all.

Hi Jake,

> I'm currently trying to understand some of the time-frames it takes to ingest big images into Omero. We're putting a 9.8GB image in currently, and it looks like it'll take a very very long time. We've thrown 16GB of RAM at it, 4 * vCPU's and copious amounts of high speed hardware.

How have you configured the RAM?


> drwxrwsr-x 2 linuxadmin staff  4.0K Aug 28 14:45 .
> -rw-rw-r-- 1 linuxadmin staff     0 Aug 28 14:45 .201_pyramid.pyr_lock
> -rw-rw-r-- 1 linuxadmin staff   80M Aug 28  2012 .201_pyramid4066596291236323213.tmp
> 
> Found that in the "Pixels" directory.
> 
> It generates ever so slowly.

Could you possibly send use the var/log/PixelData*log files which should have timing information.


> So I have a better handle on it all, can somebody explain why it's such a slow procedure? It's barely using any CPU time or RAM currently. Perhaps it's my lack of understanding as to how the rendering/generation works that makes me perceive it as "slow".

While it's working, could you possibly attach to the PID with jstack and send us the output?


> Thanks!
> --JC

Thanks as well,
~Josh.