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From: | Marc Rosen |
Subject: | Re: GPS Mac OS challenges |
Date: | Fri, 10 Dec 2021 08:58:00 -1000 |
( next looking for an open spot to get a GPS signal) add a text file “plist" to /Library/LaunchDaemons the file name is immaterial - I found a useful file and edited it to my needs the text file plist is very sensistive - beware of spaces in value strings and misspellings sudo launchctl load com.wsjtx.sysctl.plist sudo launchctl unload com.wsjtx.sysctl.plist the text of the file I used ultimately is: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>Label</key> <string>com.wsjtx.sysctl</string> <key>Program</key> <string>/usr/sbin/sysctl</string> <key>ProgramArguments</key> <array> <string>/usr/sbin/sysctl</string> <string>kern.sysv.shmmax=52428800</string> <string>kern.sysv.shmall=25600</string> <string>kern.sysv.shmmni=128</string> <string>kern.sysv.shmseg=32</string> </array> <key>RunAtLoad</key> <true/> </dict> </plist> Marc On Dec 9, 2021, at 2:20 PM, Gary E. Miller <gem@rellim.com> wrote: Yo Marc! On Thu, 9 Dec 2021 18:16:38 -0600 Marc Rosen <marc.rosen@mac.com> wrote: One improvement - after rereading the instructions I realized that the magic numbers for user space gpsd are 2 and 3, I changed those in the ntpd.conf and the permission issue went away ( ntpshmmon) But did you get any data from gpsd to ntpd on SHM(2)? Forget SHM(3), you do not have any PPS. I don’t have great visibility to the GPS sky right now Putting you antenna next to a south facing window can help. - here’s the last debug: Nothing new there. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 gem@rellim.com Tel:+1 541 382 8588 Veritas liberabit vos. -- Quid est veritas? "If you can't measure it, you can't improve it." - Lord Kelvin |
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