drmatt wrote: > If you can watch the CPU clock speed that will give you an idea of when > the CPU is throttled too. >
>From 'here' (https://raspberrypi.stackexchange.com/questions/1219/how-do-i-determine-the-current-mhz) I found: Code: -------------------- sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq -------------------- ...to get maximum CPU frequency under load, minimum CPU frequency at idle, and current frequency respectively. Mine's currently at 600000 (600MHz), since it's at idle, and has a maximum of 1.5GHz. Does it jump straight to 1.5GHz under normal load conditions, such that any speed other than 600MHz or 1.5GHz indicates that it's trying to run at full speed but is being throttled? Or does it step up gradually from 600MHz according to the amount of load? If the latter, how can you tell if it's throttling or just not under enough load to need to go faster? I've just applied the firmware update posted 'here' (https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=243500&p=1490467#p1490467), and it's had a noticeable effect. I'd been logging the CPU temperature over night, and it stayed at 59 degrees all night, occasionally changing to 60 degrees, but I think that's just the precision of the sensor, since the RPi4 wasn't doing anything. A few minutes after rebooting after the firmware update and it's dropped to 56 degrees. That's the expected 3-4 degrees reduction that was reported for the new firmware. ------------------------------------------------------------------------ chill's Profile: http://forums.slimdevices.com/member.php?userid=10839 View this thread: http://forums.slimdevices.com/showthread.php?t=110727 _______________________________________________ unix mailing list unix@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/unix
