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<== Date ==> <== Thread ==>
Subject: RE: line scan camera with ADAravis driver skips frames
From: Mark Rivers via Tech-talk <tech-talk at aps.anl.gov>
To: 'Katie Matusik' <kmatusik at sigray.com>
Cc: EPICS Tech-Talk <tech-talk at aps.anl.gov>
Date: Tue, 6 Apr 2021 18:38:18 +0000

Hi Katie,

 

Have you set the Linux net.core.rmem_default and net.core.rmem_max settings as described here?

 

https://areadetector.github.io/master/ADGenICam/ADGenICam.html#linux-usb-and-gige-system-settings

 

If that does not help then on the Basler-features_4 screen you will see these features:

GevSCPD  Inter-packet delay

GevSCFTD Frame transmission delay

GevSCBWA  Bandwidth assigned

GevBWR  Bandwidth reserve

GevBWRA  Bandwidth reserve accumulation

 

I don’t know what those all do because they are Basler-specific, but they are discussed some here:

https://github.com/basler/pypylon/issues/129

 

Mark

 

 

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Katie Matusik via Tech-talk
Sent: Tuesday, April 6, 2021 1:07 PM
To: tech-talk <tech-talk at aps.anl.gov>
Subject: line scan camera with ADAravis driver skips frames

 

Hi everyone,

The camera that I am connecting to via GigE is a Basler Racer line scan camera (12288 x 1 px) model raL12288-8gm. When I run the camera with binning 1x1 and 8-bit pixel format at 1kHz (slowest frame rate), the driver keeps up until about 30K frames, at which point I start accumulating frame failures and underruns. With a higher frame rate, it happens almost immediately. 

 

I am using the latest areaDetector-master with ADAravis R1-3 and ADGenICam-master. I am running this IOC in a Docker using the host network which has MTU set to 9000. I made a slight adjustment to the ADAravis.cpp driver regarding setting the packet size to jumbo packets rather than determining optimum packet size, which was interfering with my network (lines 379-381 in ADAravis.cpp):

377     if (ARV_IS_GV_DEVICE(this->device)) {
378         // Automatically determine optimum packet size
379 //        arv_gv_device_auto_packet_size(ARV_GV_DEVICE(this->device));
380         // Uncomment this line to set jumbo packets
381         arv_gv_device_set_packet_size(ARV_GV_DEVICE(this->device), 9000);
382     }

I'm attaching snapshots of my camera features settings as well as my st.cmd and st.cmd.base files. Please let me know what other information you need. When I run this using the Basler pylonViewer software, I do not see these skipped frames.

 

Best,

Katie

 

 

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References:
line scan camera with ADAravis driver skips frames Katie Matusik via Tech-talk
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