Created
August 22, 2024 05:59
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| > ~/github/tsuna/contextswitch make all ✔ mrcroxx@homelab 05:55:12 | |
| gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror -lrt -lpthread timectxsw.c -o timectxsw | |
| gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror -lrt -lpthread timectxswws.c -o timectxswws | |
| gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror -lrt -lpthread timesyscall.c -o timesyscall | |
| gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror -lrt -lpthread timetctxsw.c -o timetctxsw | |
| gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror -lrt -lpthread timetctxsw2.c -o timetctxsw2 | |
| ./cpubench.sh | |
| model name : AMD Ryzen 9 7950X 16-Core Processor | |
| 1 physical CPUs, 16 cores/CPU, 2 hardware threads/core = 32 hw threads total | |
| -- No CPU affinity -- | |
| 10000000 system calls in 1017933137ns (101.8ns/syscall) | |
| 2000000 process context switches in 4232319466ns (2116.2ns/ctxsw) | |
| 2000000 thread context switches in 4425227681ns (2212.6ns/ctxsw) | |
| sched_setscheduler(): Operation not permitted | |
| 2000000 thread context switches in 172368054ns (86.2ns/ctxsw) | |
| -- With CPU affinity -- | |
| 10000000 system calls in 975160980ns (97.5ns/syscall) | |
| 2000000 process context switches in 5335977552ns (2668.0ns/ctxsw) | |
| 2000000 thread context switches in 5004306873ns (2502.2ns/ctxsw) | |
| sched_setscheduler(): Operation not permitted | |
| 2000000 thread context switches in 995713966ns (497.9ns/ctxsw) | |
| -- With CPU affinity to CPU 0 -- | |
| 10000000 system calls in 974760363ns (97.5ns/syscall) | |
| 2000000 process context switches in 4164152540ns (2082.1ns/ctxsw) | |
| 2000000 thread context switches in 4319097459ns (2159.5ns/ctxsw) | |
| sched_setscheduler(): Operation not permitted | |
| 2000000 thread context switches in 172233551ns (86.1ns/ctxsw) |
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