/ipibench

Benchmark IPI performance on Linux Kernel using on_each_cpu

Primary LanguageC

IPI Bench

Benchmark IPI performance on Linux Kernel using on_each_cpu

How to use

make
sudo insmod ipibench.ko
# Test for nr_cpu*10**5 times
echo 100000 | sudo tee /sys/kernel/ipibench/status
cat /sys/kernel/ipibench/status

You will get result like this:

32 of CPUs online.
IPI takes 204225607 ktime, 204225607 ns

Test Result

SoC / CPU Kernel 1e5 timespent Note
Intel Core i9 13900K Debian 6.6.11-1 (2024-01-14) 203409168 ns
StarFive VisionFive2(Sifive U74) Linux v6.8-rc2 + defconfig 454372218 ns Mainline OpenSBI v1.3
LicheePi 4A TH1520 T-Head Linux SDK V1.4.2 1311311167 ns Mainline OpenSBI v1.3
LicheePi 4A TH1520 th1520-v6.7.2 1697927600 ns Mainline OpenSBI v1.3
Milk-V Pioneer(SG2042)(1 cluster) a7e8fb0 933509238 ns Modified OpenSBI without sfence.vma errata fix
Milk-V Pioneer(SG2042) a7e8fb0 14843102479 ns Modified OpenSBI without sfence.vma errata fix