Google libwebp2 library with image encoding. There are five workloads that run differing amounts of time. Looks like the last one takes a majority of the time.
Topdown profile shows overall a high retirement rate
AMD metrics confirm the higher retirement rate. Some floating point code and lower amount of L2 access.
elapsed 6454.668
on_cpu 0.938 # 15.01 / 16 cores
utime 96826.664
stime 45.413
nvcsw 494978 # 29.55%
nivcsw 1179978 # 70.45%
inblock 8 # 0.00/sec
onblock 190864 # 29.57/sec
cpu-clock 96875999087966 # 96875.999 seconds
task-clock 96876761793744 # 96876.762 seconds
page faults 10494175 # 108.325/sec
context switches 1706972 # 17.620/sec
cpu migrations 160719 # 1.659/sec
major page faults 3 # 0.000/sec
minor page faults 10494172 # 108.325/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 126898490547422 # 158.007 branches per 1000 inst
branch misses 1318886240479 # 1.04% branch miss
conditional 77448549388599 # 96.435 conditional branches per 1000 inst
indirect 13673282628499 # 17.025 indirect branches per 1000 inst
cpu-cycles 384962570882363 # 3.72 GHz
instructions 803239029833114 # 2.09 IPC
slots 769854586083126 #
retiring 284609100009382 # 37.0% (62.1%) high
-- ucode 4043501393113 # 0.5%
-- fastpath 280565598616269 # 36.4%
frontend 78261693919570 # 10.2% (17.1%)
-- latency 42905861803014 # 5.6%
-- bandwidth 35355832116556 # 4.6%
backend 80176935537309 # 10.4% (17.5%) low
-- cpu 49494451462269 # 6.4%
-- memory 30682484075040 # 4.0%
speculation 15095623143789 # 2.0% ( 3.3%)
-- branch mispredict 15003422604144 # 1.9%
-- pipeline restart 92200539645 # 0.0%
smt-contention 311710573425872 # 40.5% ( 0.0%)
cpu-cycles 384784177103671 # 3.71 GHz
instructions 803248721506170 # 2.09 IPC
instructions 267743308628030 # 7.474 l2 access per 1000 inst
l2 hit from l1 1602663711417 # 7.55% l2 miss
l2 miss from l1 35570585376 #
l2 hit from l2 pf 282998514358 #
l3 hit from l2 pf 43222627984 #
l3 miss from l2 pf 72300954073 #
instructions 267647173786960 # 121.102 float per 1000 inst
float 512 79 # 0.000 AVX-512 per 1000 inst
float 256 616 # 0.000 AVX-256 per 1000 inst
float 128 32412525008255 # 121.102 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
instructions 803109168877818 #
opcache 127066718164852 # 158.218 opcache per 1000 inst
opcache miss 3493204387362 # 2.7% opcache miss rate
l1 dTLB miss 665818661116 # 0.829 L1 dTLB per 1000 inst
l2 dTLB miss 6124862374 # 0.008 L2 dTLB per 1000 inst
instructions 803111520402727 #
icache 4365248868945 # 5.435 icache per 1000 inst
icache miss 710717117556 # 16.3% icache miss rate
l1 iTLB miss 95935516176 # 0.119 L1 iTLB per 1000 inst
l2 iTLB miss 0 # 0.000 L2 iTLB per 1000 inst
tlb flush 142328 # 0.000 TLB flush per 1000 inst
Intel metrics
elapsed 8161.727
on_cpu 0.937 # 15.00 / 16 cores
utime 122359.757
stime 47.232
nvcsw 1448562 # 50.39%
nivcsw 1426173 # 49.61%
inblock 22528 # 2.76/sec
onblock 179512 # 21.99/sec
cpu-clock 122409623127842 # 122409.623 seconds
task-clock 122410292988041 # 122410.293 seconds
page faults 10143595 # 82.866/sec
context switches 2915091 # 23.814/sec
cpu migrations 124435 # 1.017/sec
major page faults 82 # 0.001/sec
minor page faults 10143513 # 82.865/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 127006812912740 # 158.044 branches per 1000 inst
branch misses 1410065467341 # 1.11% branch miss
conditional 127006812933188 # 158.044 conditional branches per 1000 inst
indirect 50858947018231 # 63.288 indirect branches per 1000 inst
slots 557076544137674 #
retiring 400021032719744 # 71.8% (71.8%) high
-- ucode 43305567539593 # 7.8%
-- fastpath 356715465180151 # 64.0%
frontend 80086580625828 # 14.4% (14.4%)
-- latency 33826533132000 # 6.1%
-- bandwidth 46260047493828 # 8.3%
backend 27264603206660 # 4.9% ( 4.9%) low
-- cpu 19162921555765 # 3.4%
-- memory 8101681650895 # 1.5%
speculation 59508409749058 # 10.7% (10.7%) high
-- branch mispredict 59089662975152 # 10.6%
-- pipeline restart 418746773906 # 0.1%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 346572446103804 # 2.67 GHz
instructions 760195516210084 # 2.19 IPC
l2 access 2119361444064 # 5.371 l2 access per 1000 inst
l2 miss 440106375672 # 20.77% l2 miss
cpu-cycles 179557431925404 # 11.4% memory latency
load stalls 20166657919693 # 8.7% l1 bound
l1 miss 4621141485201 # 1.9% l2 bound
l2 miss 1141520305635 # 0.2% l3 bound
l3 miss 849908241729 # 0.5% dram bound
store_stalls 259645621514 # 0.1% store bound
Process overview shows time spent in cwp2
512 processes
234 cwp2 896093.32 511.22
34 clinfo 10.01 3.00
19 vulkaninfo 0.74 0.76
2 vulkani:disk$0 0.07 0.08
6 clang 0.05 0.07
1 llvmpipe-0 0.04 0.04
1 llvmpipe-1 0.04 0.04
1 llvmpipe-10 0.04 0.04
1 llvmpipe-11 0.04 0.04
1 llvmpipe-12 0.04 0.04
1 llvmpipe-13 0.04 0.04
1 llvmpipe-14 0.04 0.04
1 llvmpipe-15 0.04 0.04
1 llvmpipe-2 0.04 0.04
1 llvmpipe-3 0.04 0.04
1 llvmpipe-4 0.04 0.04
1 llvmpipe-5 0.04 0.04
1 llvmpipe-6 0.04 0.04
1 llvmpipe-7 0.04 0.04
1 llvmpipe-8 0.04 0.04
1 llvmpipe-9 0.04 0.04
1 ps 0.00 0.01
68 sh 0.00 0.00
13 gcc 0.00 0.00
13 rm 0.00 0.00
13 webp2 0.00 0.00
11 gsettings 0.00 0.00
8 systemd-detect- 0.00 0.00
7 stat 0.00 0.00
6 llvm-link 0.00 0.00
4 glxinfo 0.00 0.00
4 phoronix-test-s 0.00 0.00
3 gmain 0.00 0.00
2 grep 0.00 0.00
2 which 0.00 0.00
1 cc 0.00 0.00
1 date 0.00 0.00
1 dconf worker 0.00 0.00
1 dirname 0.00 0.00
1 ifconfig 0.00 0.00
1 ip 0.00 0.00
1 lscpu 0.00 0.00
1 mktemp 0.00 0.00
1 qdbus 0.00 0.00
1 readlink 0.00 0.00
1 realpath 0.00 0.00
1 sed 0.00 0.00
1 setterm 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
28 processes running
47 maximum processes
Computation blocks
13497) webp2 cpu=0 start=13.20 finish=16.73
13498) cwp2 cpu=9 start=13.20 finish=16.71
13499) cwp2 cpu=8 start=13.70 finish=16.67
13500) cwp2 cpu=15 start=13.70 finish=16.67
13501) cwp2 cpu=0 start=13.70 finish=16.67
13502) cwp2 cpu=7 start=13.70 finish=16.67
13503) cwp2 cpu=11 start=13.70 finish=16.67
13504) cwp2 cpu=15 start=13.70 finish=16.67
13505) cwp2 cpu=7 start=13.70 finish=16.67
13506) cwp2 cpu=13 start=13.70 finish=16.67
13507) cwp2 cpu=10 start=13.70 finish=16.67
13508) cwp2 cpu=4 start=13.70 finish=16.67
13509) cwp2 cpu=12 start=13.70 finish=16.67
13510) cwp2 cpu=6 start=13.70 finish=16.67
13511) cwp2 cpu=1 start=13.70 finish=16.67
13512) cwp2 cpu=3 start=13.70 finish=16.69
13513) cwp2 cpu=2 start=13.70 finish=16.69
13514) cwp2 cpu=11 start=13.70 finish=16.69
13515) cwp2 cpu=14 start=13.70 finish=16.70
13517) rm cpu=2 start=16.73 finish=16.73