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mrneilypops

Netgear Nighthawk X4S R7800 DD-WRT CPU speed tweak

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mrneilypops

I found this tweak recently to force Nighthawk CPU speed into performance mode.

It has taken me 2 years to find this openvpn speed improvement on the DD-WRT forums 😂

I learnt that the Nighthawk R7800 uses 'CPU frequency scaling' and the CPU can be running anywhere between 384MHz. and 1725MHz. ( I often noted a frequency of +/-800MHz. in the DD-WRT system monitor)

200Mbps/100Mbps fibre connection

My TorGuard openvpn speeds have increased from 40/40 to 110/100 with one command added to DD-WRT startup;

for CPUFREQ in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do [ -f $CPUFREQ ] || continue; echo -n performance > $CPUFREQ; done
  • AES-128-GCM cypher
  • fast-io

 

Note: Your mileage may vary.

Note: there is a small rise in CPU temps of ~3C using this tweak

Original forum post;

https://forum.dd-wrt.com/phpBB2/viewtopic.php?t=311146&postdays=0&postorder=asc&start=0

20190626_190655-1.jpg

Edited by mrneilypops
cpu frequency scaling addition

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Excellent and thank you for sharing :)

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