con:SetImage()

[Rob H]

This seems to be very slow - about 10 seconds to transfer 24 fairly small (e.g. 19k) images. I can't be more precise on the timing since the transfer is asynchronous. This is all on the same PC by the way. Doesn't seem to make any difference whether the image is a JPG or a PNG.

[Rob H]

Any thoughts on this?

[Promixis]

Rob,

This is a G -> NR transfer?

[Rob H]

Yup

[Ron]

When I was developing this thing I was testing G->G and that still can transfer 500kB within a second. So maybe the PPC network connection isn't very fast?

[Rob H]

This is Girder -> NR Win32 on the same PC

It's possible that it's Ben's drv_girder.dll that's the culprit

[Ben S]

Is this to one client? Do you blast all 24 in a loop to one client, or do you loop through the list of clients for each image?

If you can put together a quick test file for me, I'll run it local and see what's happening.

[Rob H]

It's all to one client, using LDJ.

I'll try to come up with a test.

[Ben S]

Thanks for the test, Rob.

I put some timing into the send function in the lua, and it returns almost immediately for each one, so I'm assuming this is threading, in some way.

On the NetRemote side, from command received to image set is 30 milliseconds. There is about a half second between each send, however.

12588 : Got command
12588 : Got command 2
12598 : Got image set
12598 : Parsing command
12598 : Parsed command
12598 : Writing image data
12608 : Setting variable
12618 : Set variable

-----------------------
13089 : Got command
13089 : Got command 2
13099 : Got image set
13099 : Parsing command
13099 : Parsed command
13109 : Writing image data
13109 : Setting variable
13119 : Set variable

So the time between 12618 and 13089 is about a half second wait between calls coming into NetRemote.

Now I originally thought it was because I wasn't ACK'ing back to Girder on an image receive, and it was waiting a half second for an ACK. But I added that in and no dice.

Ron, any ideas?

[Rob H]

Right, so the transfer is quick, but it's not visiting the queue often enough perhaps?