Image Writer: Slow when network drive is mapped in system (windows)

[dietzc]

please reproduce and check what's going on.

[imagejan]

On a related note: I'm working in an environment (domain integration, Windows 7) where a dozen of network drives is auto-mounted upon login, so I wasn't able to compare speeds with and without network drives mapped.
But I noticed that writing in ics/ids format is much, much faster compared to all other formats available in the Image Writer node.

[imagejan]

And another one:
None of the writer nodes can write on mapped network drives, they all complain about missing writing permissions (although the logged-in user does have permission to write). I tried with Image Writer, CSV Writer and XLS Writer, so it's a general problem with KNIME. I'll also report it on the forum then.

[dietzc]

On a related note: I'm working in an environment (domain integration, Windows 7) where a dozen of network drives is auto-mounted upon login, so I wasn't able to compare speeds with and without network drives mapped.
But I noticed that writing in ics/ids format is much, much faster compared to all other formats available in the Image Writer node.

thanks for letting us know. I didn't know this. But I think @hinerm already knows that?!

[imagejan]

I had the chance to test on a computer without mounted drives and again after mounting a network drive, and found no difference.
I think the main issue is scifio/scifio#310, as discussed in #131.

[dietzc]

see also https://tech.knime.org/forum/knime-image-processing/image-writer-cannot-write-to-network-drives#comment-48710