FS#3115 - Performance/ping/network latency regression in OpenWrt 19.07.3 vs 19.07.1 #7869
Labels
flyspray
kernel
pull request/issue with Linux kernel related changes
release/19.07
pull request/issue targeted (also) for OpenWrt 19.07 release
birdie:
Today I've upgraded from OpenWrt 19.07.1 to 19.07.3 and noticed that latency for my WDR3600 router has increased more than threefold.
In OpenWrt 19.07.1 ping from my PC to the router (connected via a 1Gb wired connection, less than a meter) took approximately 0.250ms
In OpenWrt 19.07.3 ping is now 0.860ms on average.
I haven't changed any settings after upgrading to OpenWrt 19.07.3.
This is quite a serious performance regression.
When I was carrying out the tests I had zero load and zero Internet traffic, so the router CPU was completely idle.
# uptime
15:22:59 up 4:36, load average: 0.00, 0.00, 0.00
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