On 02/10/2014 11:10 AM, Scott Talbert wrote: > On Tue, 28 Jan 2014, Scott Talbert wrote: > >>>> Also, any idea on the missing packets? It's exactly what happens on MacOSX >>>> too. Since we use hidapi-raw on both mac and windows I'm very suspicious >>>> it's >>>> something in there, or the way we're using it.. but I haven't had time to >>>> recompile my kernel and test the behavior of hidapi-raw on linux.... >>> >>> Well, on one Windows 7 box, I found that if I increase the HID driver packet >>> buffer size, the dropped packets went away. So, I'm going to submit a patch >>> to HIDAPI to do that. On a Windows XP box, I still see occassional dropped >>> packets even with the increased buffer size. It doesn't appear that the >>> buffer is getting overrun in that case. I'm really not sure what to do - as >>> best I can tell it might be a bug in the USB chipset driver or something. >>> >>> In your situation, in which case are you seeing dropped packets? Config >>> update? Config dump? Or both? And with which remote(s)? >> >> Aha! Take a look at hid_report_callback() in the Mac version of HIDAPI. >> It looks like it is doing incoming report buffering similar to what the >> Windows HID driver is doing. If the number of queued reports goes over >> 30, it starts dropping them. Try increasing that number and see if the >> dropped reports go away. > > Did you try this?
Busy few weeks. Tried it today. I got... inconsistent results. Bumping it up to 100 made it work. But then I put it back to 30, recompiled, reinstalled, and it ... still worked. Then I deleted the libraries, re-installed, and it still worked. Then it worked for a bit, then eventually failed. Once I made it fail, it failed consistently. Then I'd update it to 100, and it'd work again. I did some research and it seems like OSX does significant caching of shared objects, and there's a tool, update_dyld_shared_cache, but it doesn't seem to force a purge of the cache, even with -force. The man page seems to imply a reboot is needed. Then I took to running 'update_dyld_shared_cache -force && reboot' between each test, and I *STILL* didn't get consistent results. I've had a version installed with the val at 100 and don't 3 reboots, and it's failing. -- Phil Dibowitz p...@ipom.com Open Source software and tech docs Insanity Palace of Metallica http://www.phildev.net/ http://www.ipom.com/ "Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind." - Dr. Seuss
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