iQ-VIEW CPU USAGE

    Hi.


    I'm only staring with conquest server. Prior to Conquest server we've used filesystem to obtain dicom data.
    I've installed conquest server (with some trouble regarding dns and AET names where i had to enter hostnames in hosts file) but it basically works.
    Transferring image data from conquest server is painfully slow (queries are blazing fast).
    I've noticed that iQ-VIEW (not iqserver) uses 100% of cpu while transferring data.
    I've set uncompressed format for storage and transfer.


    known dicom providers:
    * * 104 un


    Best regards

    Hi,


    Very slow transfer happens sometimes if the IP route is not setup correctly, i.e., if there are multiple networks connected to the same computer. Can you compare speed sending to another conquest on the same machine as IQView?


    Marcel

    On the very same machine it gets exactly same speed (and cpu usage). I think that transfer speed is limited by cpu usage. Maybe some sort of on the fly compression/decompression, encryption/decryption?

    Hi,


    are these huge images? I can imagine that DSA images that are stored with JPEG compression would require quite some processing time. However, if you set "un" in acrnema.map that would cause high CPU load on the conquest server, not the viewer.


    Marcel

    Those arent big images biggest sets consist of 40MB of data and the cpu usage is on iqview process not conquest nor even iqserver.


    ps.
    weird thing for me was also that i had to have hostnames matching iqservers aet titles otherwise i could transfer images from iqview to conquest and i could make searches from iqview but i couldn't recieve any image data.

    Hi,


    40 MB for a single image? What modality is that? Viewer may have trouble with very high resolution data.


    On conquest (older versions), a viewer sends its AE to conquest. Conquest translates this to IP/PORT through 'known dicom provders'. If there is no entry, the AE is interpreted as hostname. So your ps basically means than the 'known dicom provders' in file acrname.map are not correcly configured.


    Marcel

    40mb for series not single image. and as soon as i'll get to work i'll check known dicom providers. if they're not properly configured and are getting ignored them "un" part can get ignored as well.

    Thank you for your help.
    It was a problem with acrname.map
    When i made single entries for separate hosts it transfers even a bit faster than from filesystem (NAS).
    Now I'm only faced with strange bug that when conquest server is added iq-view cant load 3d data (main: failed loading volume data) regardless of data origin if it's from filesystem or from conquest. But when i remove conquest server from it's config it magically works.



    Best regards and again thank you for help

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