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Forum Discussion
[SOLVED] 516 gets "CPU temp exceeded safety threshold"
I've seen temps hit 86C+ with two PLEX (v0.9.9.0) transcodes running at once. I saw it peak up near 72C with just a single transcode, where CPU usage was reported by top at up to 250% (for the process...
Been a while! I've got a trip upcoming, so I'm taking advantage of offline transcoding and syncing to my mobile device with PLEX. This has renewed my interest in having better fan behavior in ROS6 (now 6.1.8).
Upon setting sync options for a couple of my favorite shows, PLEX has the CPU comfortably pegged at 320-350% CPU. :) But while ~800RPM fan speed is fine with the CPU is cool, this level of activity quickly causes temps to rise above 70C and then slowly up to 86C where the NAS starts sending alerts. In this time, the fan speed increased from 808 to a whopping 856.
Something is very wrong there.
I referred back to the beta forum and stepped up values of /sys/class/hwmon/hwmon1/device/pwm1 from 90, 100, 120, and finally 160... at which time the RPM hit about 2500 and I started to see CPU temp drop noticeably. Once temp hit about 70, fan was back down to about 1900 (and I'm sure still quite noisy, but I'm not there to hear it right now). But that still seems warm. So I bumped pwm1 to 190 and fan increased to ~2570 RPM, and temps began to recede to about 58C.
Generally the normal activity of my 516 allows for a nice, quiet 800RPM fan. Almost don't know it's there. But when CPU gets busy and the temps spike, it would be nice to know the fan can respond accordingly. What's the best way to ensure this happens?? I've never fully understood why this is such a challenge.
Upon setting sync options for a couple of my favorite shows, PLEX has the CPU comfortably pegged at 320-350% CPU. :) But while ~800RPM fan speed is fine with the CPU is cool, this level of activity quickly causes temps to rise above 70C and then slowly up to 86C where the NAS starts sending alerts. In this time, the fan speed increased from 808 to a whopping 856.
Something is very wrong there.
I referred back to the beta forum and stepped up values of /sys/class/hwmon/hwmon1/device/pwm1 from 90, 100, 120, and finally 160... at which time the RPM hit about 2500 and I started to see CPU temp drop noticeably. Once temp hit about 70, fan was back down to about 1900 (and I'm sure still quite noisy, but I'm not there to hear it right now). But that still seems warm. So I bumped pwm1 to 190 and fan increased to ~2570 RPM, and temps began to recede to about 58C.
Generally the normal activity of my 516 allows for a nice, quiet 800RPM fan. Almost don't know it's there. But when CPU gets busy and the temps spike, it would be nice to know the fan can respond accordingly. What's the best way to ensure this happens?? I've never fully understood why this is such a challenge.
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