A multi-media communication library. There are three tests. Overall not all cores are used.
Topdown profile shows patterns for the first two workloads with increasing backend stalls and stead more front-end dominated third test.
AMD metrics confirm ~3 cores used. This has a low amount of floating point and some L2 access/miss. Retirement rate is low.
elapsed 872.680
on_cpu 0.181 # 2.90 / 16 cores
utime 1471.931
stime 1054.997
nvcsw 104739970 # 99.99%
nivcsw 13391 # 0.01%
inblock 0 # 0.00/sec
onblock 19360 # 22.18/sec
cpu-clock 2447341449035 # 2447.341 seconds
task-clock 2480102291249 # 2480.102 seconds
page faults 14806187 # 5969.990/sec
context switches 104757512 # 42239.190/sec
cpu migrations 205635 # 82.914/sec
major page faults 2 # 0.001/sec
minor page faults 14806185 # 5969.990/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 1128582198076 # 213.850 branches per 1000 inst
branch misses 47870033453 # 4.24% branch miss
conditional 693597720831 # 131.427 conditional branches per 1000 inst
indirect 48446812498 # 9.180 indirect branches per 1000 inst
cpu-cycles 4979308073975 # 0.60 GHz
instructions 3332596284211 # 0.67 IPC low
slots 9590503738338 #
retiring 1157720464051 # 12.1% (13.4%) low
-- ucode 5521946715 # 0.1%
-- fastpath 1152198517336 # 12.0%
frontend 3682466302037 # 38.4% (42.5%)
-- latency 2964712224432 # 30.9%
-- bandwidth 717754077605 # 7.5%
backend 3732946857573 # 38.9% (43.1%)
-- cpu 287450185120 # 3.0%
-- memory 3445496672453 # 35.9%
speculation 90555733372 # 0.9% ( 1.0%)
-- branch mispredict 89531846934 # 0.9%
-- pipeline restart 1023886438 # 0.0%
smt-contention 920983823302 # 9.6% ( 0.0%)
cpu-cycles 4974037708645 # 0.60 GHz
instructions 3337759127969 # 0.67 IPC low
instructions 1067429416158 # 77.346 l2 access per 1000 inst
l2 hit from l1 73991456271 # 23.13% l2 miss
l2 miss from l1 13819645625 #
l2 hit from l2 pf 3289759922 #
l3 hit from l2 pf 3690946118 #
l3 miss from l2 pf 1589510836 #
instructions 1062162717684 # 37.920 float per 1000 inst
float 512 70 # 0.000 AVX-512 per 1000 inst
float 256 376 # 0.000 AVX-256 per 1000 inst
float 128 40277396596 # 37.920 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
instructions 3271752497547 #
opcache 807851793032 # 246.917 opcache per 1000 inst
opcache miss 364522750050 # 45.1% opcache miss rate
l1 dTLB miss 18076511385 # 5.525 L1 dTLB per 1000 inst
l2 dTLB miss 6912031728 # 2.113 L2 dTLB per 1000 inst
instructions 3241047487847 #
icache 651603170877 # 201.047 icache per 1000 inst
icache miss 151656213181 # 23.3% icache miss rate
l1 iTLB miss 4500504772 # 1.389 L1 iTLB per 1000 inst
l2 iTLB miss 0 # 0.000 L2 iTLB per 1000 inst
tlb flush 27633 # 0.000 TLB flush per 1000 inst
Intel metrics show L2 contributing most to memory stalls.
elapsed 628.100
on_cpu 0.271 # 4.33 / 16 cores
utime 1091.855
stime 1629.278
nvcsw 151030991 # 99.93%
nivcsw 109554 # 0.07%
inblock 11128 # 17.72/sec
onblock 6552 # 10.43/sec
cpu-clock 2583472462864 # 2583.472 seconds
task-clock 2613444209838 # 2613.444 seconds
page faults 5468293 # 2092.370/sec
context switches 151143522 # 57833.078/sec
cpu migrations 1129211 # 432.078/sec
major page faults 75 # 0.029/sec
minor page faults 5468218 # 2092.342/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 648571518382 # 193.231 branches per 1000 inst
branch misses 6479755096 # 1.00% branch miss
conditional 648571535662 # 193.231 conditional branches per 1000 inst
indirect 184234923106 # 54.890 indirect branches per 1000 inst
slots 9992331641624 #
retiring 2316526686439 # 23.2% (23.2%)
-- ucode 271324146085 # 2.7%
-- fastpath 2045202540354 # 20.5%
frontend 3415663041163 # 34.2% (34.2%)
-- latency 2120574401746 # 21.2%
-- bandwidth 1295088639417 # 13.0%
backend 3818905787350 # 38.2% (38.2%)
-- cpu 1985792510508 # 19.9%
-- memory 1833113276842 # 18.3%
speculation 680472023318 # 6.8% ( 6.8%)
-- branch mispredict 627083874564 # 6.3%
-- pipeline restart 53388148754 # 0.5%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 6930631634594 # 0.68 GHz
instructions 3663941525969 # 0.53 IPC low
l2 access 120844116452 # 67.688 l2 access per 1000 inst
l2 miss 32589491360 # 26.97% l2 miss
cpu-cycles 3286115076954 # 40.3% memory latency
load stalls 1313147926015 # 7.7% l1 bound
l1 miss 1060648082367 # 6.0% l2 bound
l2 miss 862603162359 # 23.5% l3 bound
l3 miss 91443384427 # 2.8% dram bound
store_stalls 12488939402 # 0.4% store bound
Process overview shows pjsip-perf as the primary test process
768 processes
304 pjsip-perf 31540.46 15983.96
68 clinfo 19.84 5.99
38 vulkaninfo 1.71 1.33
80 threaded-ml 0.38 0.76
4 vulkani:disk$0 0.18 0.14
6 glxinfo:gdrv0 0.18 0.04
6 glxinfo:gl0 0.18 0.04
6 php 0.09 0.17
2 llvmpipe-0 0.09 0.07
2 llvmpipe-1 0.09 0.07
2 llvmpipe-10 0.09 0.07
2 llvmpipe-11 0.09 0.07
2 llvmpipe-12 0.09 0.07
2 llvmpipe-13 0.09 0.07
2 llvmpipe-14 0.09 0.07
2 llvmpipe-15 0.09 0.07
2 llvmpipe-2 0.09 0.07
2 llvmpipe-3 0.09 0.07
2 llvmpipe-4 0.09 0.07
2 llvmpipe-5 0.09 0.07
2 llvmpipe-6 0.09 0.07
2 llvmpipe-7 0.09 0.07
2 llvmpipe-8 0.09 0.07
2 llvmpipe-9 0.09 0.07
2 glxinfo 0.08 0.02
2 glxinfo:cs0 0.08 0.02
2 glxinfo:disk$0 0.08 0.02
2 glxinfo:sh0 0.08 0.02
2 glxinfo:shlo0 0.08 0.02
6 clang 0.06 0.04
3 rocminfo 0.06 0.00
1 lspci 0.01 0.02
86 sh 0.00 0.00
17 sed 0.00 0.00
16 pjsip 0.00 0.00
13 gcc 0.00 0.00
9 gsettings 0.00 0.00
8 stat 0.00 0.00
8 systemd-detect- 0.00 0.00
6 llvm-link 0.00 0.00
5 phoronix-test-s 0.00 0.00
4 gmain 0.00 0.00
3 dconf worker 0.00 0.00
2 cc 0.00 0.00
2 lscpu 0.00 0.00
2 uname 0.00 0.00
2 which 0.00 0.00
2 xset 0.00 0.00
1 date 0.00 0.00
1 dirname 0.00 0.00
1 dmesg 0.00 0.00
1 dmidecode 0.00 0.00
1 grep 0.00 0.00
1 ifconfig 0.00 0.00
1 ip 0.00 0.00
1 lsmod 0.00 0.00
1 mktemp 0.00 0.00
1 ps 0.00 0.00
1 qdbus 0.00 0.00
1 readlink 0.00 0.00
1 realpath 0.00 0.00
1 sort 0.00 0.00
1 stty 0.00 0.00
1 systemctl 0.00 0.00
1 template.sh 0.00 0.00
1 wc 0.00 0.00
1 xrandr 0.00 0.00
0 processes running
47 maximum processes
Computation blocks
15666) pjsip cpu=15 start=5.72 finish=71.82
15667) pjsip-perf cpu=15 start=5.72 finish=71.76
15668) threaded-ml cpu=9 start=5.74 finish=5.74
15669) threaded-ml cpu=13 start=5.74 finish=5.74
15670) pjsip-perf cpu=9 start=5.74 finish=5.74
15671) pjsip-perf cpu=12 start=5.74 finish=5.74
15672) threaded-ml cpu=2 start=5.74 finish=5.74
15673) threaded-ml cpu=1 start=5.74 finish=5.74
15674) threaded-ml cpu=9 start=6.05 finish=6.05
15675) pjsip-perf cpu=9 start=6.05 finish=69.52
15676) pjsip-perf cpu=8 start=6.05 finish=68.50
15677) pjsip-perf cpu=5 start=6.05 finish=68.56
15678) pjsip-perf cpu=3 start=6.05 finish=68.91
15679) pjsip-perf cpu=4 start=6.05 finish=68.48
15680) pjsip-perf cpu=12 start=6.05 finish=68.34
15681) pjsip-perf cpu=14 start=6.05 finish=68.76
15682) pjsip-perf cpu=15 start=6.05 finish=68.78
15683) pjsip-perf cpu=0 start=6.05 finish=68.48
15684) pjsip-perf cpu=6 start=6.05 finish=68.19
15685) pjsip-perf cpu=8 start=6.05 finish=68.72
15686) pjsip-perf cpu=3 start=6.05 finish=68.47
15687) pjsip-perf cpu=10 start=6.05 finish=68.52
15688) pjsip-perf cpu=1 start=6.05 finish=68.40
15689) pjsip-perf cpu=11 start=6.05 finish=68.87
15690) pjsip-perf cpu=7 start=6.05 finish=68.68
15692) sed cpu=8 start=71.82 finish=71.82