This issue has been observed in applications that use the video1394 driver for Linux, which is accessed by imaging libraries such as libdc1394. It may be especially common on video systems that transmit large-format images from 2 MP or 5 MP color cameras such as Grasshoper GRAS-20S4C/50S5C, Flea2 FL2-20S4/FL2G-50S5 and Ladybug3. 

To verify if low virtual memory may be the source of these errors, view the Linux general message log (/var/log/messages) or kernel ring buffer log (/var/log/dmesg) while running the FlyCap2.exe demo program included with the FlyCapture 2.0 SDK. Both logs will show entries similar to the following:

vmap allocation for size 57634816 failed: use vmalloc= to increase size.

• In your application, manually reduce the number of requested image buffers to lower than the default value of 10. Using the FlyCapture 2.0 interface, set the numBuffers member of the FC2Config struct. Then, call the SetConfiguration member function of the Camera object.

• Increase the amount of virtual memory available to the system. To determine the current amount, issue the following command:
  
  
  cat /proc/meminfo
  
  
  The relevant parts of the output are:
  
  
  VmallocTotal—Total available virtual memory
  VmallocUsed—Amount used
  VmallocChunk—Largest contiguous piece
  
  
  To increase VmallocTotal, use GRUB to add the vmalloc command to the Linux kernel boot line. For a persisted change in virtual memory, use the GRUB configuration editor. Alternatively, use the GRUB selection menu each time at system boot up. For example, to increase virtual memory to 256 MB, specify:
  
  
  vmalloc=256M
  

• Transmit images in Raw8 pixel format, and perform color processing in your application.

• Run your application on a newer installation of Linux that uses the Juju FireWire kernel driver stack. We have not observed the same virtual memory issues using this driver stack. Juju is compatible with libdc1394 v2, and allows buffer sizes greater than 64 MB. For more information, see https://ieee1394.wiki.kernel.org/index.php/Juju_Migration.