A cross-platform tool for measuring audio workloads. There is one workload which looks to be single threaded.
Topdown profile shows backend stalls with moderate retirement rate.
AMD metrics show this is floating point code with little L2 access. Backend stalls are predominately cpu.
elapsed 105.650
on_cpu 0.036 # 0.57 / 16 cores
utime 59.273
stime 0.775
nvcsw 39756 # 98.71%
nivcsw 520 # 1.29%
inblock 0 # 0.00/sec
onblock 12616 # 119.41/sec
cpu-clock 59468938031 # 59.469 seconds
task-clock 59564726441 # 59.565 seconds
page faults 148007 # 2484.810/sec
context switches 40634 # 682.182/sec
cpu migrations 266 # 4.466/sec
major page faults 2 # 0.034/sec
minor page faults 148005 # 2484.776/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 46871894861 # 94.897 branches per 1000 inst
branch misses 187526606 # 0.40% branch miss
conditional 41996871126 # 85.027 conditional branches per 1000 inst
indirect 587231450 # 1.189 indirect branches per 1000 inst
cpu-cycles 219250853248 # 0.13 GHz
instructions 490086343965 # 2.24 IPC
slots 452434780902 #
retiring 182227594048 # 40.3% (40.3%)
-- ucode 10336777 # 0.0%
-- fastpath 182217257271 # 40.3%
frontend 12201066081 # 2.7% ( 2.7%) low
-- latency 9700517124 # 2.1%
-- bandwidth 2500548957 # 0.6%
backend 253663365606 # 56.1% (56.1%)
-- cpu 205857012827 # 45.5%
-- memory 47806352779 # 10.6%
speculation 4294709493 # 0.9% ( 0.9%) low
-- branch mispredict 4276264787 # 0.9%
-- pipeline restart 18444706 # 0.0%
smt-contention 47790388 # 0.0% ( 0.0%)
cpu-cycles 220389252277 # 0.12 GHz
instructions 491261399409 # 2.23 IPC
instructions 166182218490 # 6.943 l2 access per 1000 inst
l2 hit from l1 1005763349 # 8.68% l2 miss
l2 miss from l1 36107522 #
l2 hit from l2 pf 84030790 #
l3 hit from l2 pf 6436841 #
l3 miss from l2 pf 57623846 #
instructions 165786840036 # 464.715 float per 1000 inst
float 512 56 # 0.000 AVX-512 per 1000 inst
float 256 588 # 0.000 AVX-256 per 1000 inst
float 128 77043622264 # 464.715 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
instructions 494497368571 #
opcache 58120077674 # 117.534 opcache per 1000 inst
opcache miss 779212981 # 1.3% opcache miss rate
l1 dTLB miss 71054834 # 0.144 L1 dTLB per 1000 inst
l2 dTLB miss 8664683 # 0.018 L2 dTLB per 1000 inst
instructions 494052603367 #
icache 1709122309 # 3.459 icache per 1000 inst
icache miss 280563902 # 16.4% icache miss rate
l1 iTLB miss 8377213 # 0.017 L1 iTLB per 1000 inst
l2 iTLB miss 0 # 0.000 L2 iTLB per 1000 inst
tlb flush 16750 # 0.000 TLB flush per 1000 inst
Intel metrics
elapsed 104.668
on_cpu 0.036 # 0.58 / 16 cores
utime 56.342
stime 4.307
nvcsw 48139 # 99.77%
nivcsw 113 # 0.23%
inblock 1560 # 14.90/sec
onblock 1336 # 12.76/sec
cpu-clock 59989924129 # 59.990 seconds
task-clock 60026167216 # 60.026 seconds
page faults 84456 # 1406.986/sec
context switches 48610 # 809.813/sec
cpu migrations 283 # 4.715/sec
major page faults 7 # 0.117/sec
minor page faults 84449 # 1406.870/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 45363872451 # 93.602 branches per 1000 inst
branch misses 107504576 # 0.24% branch miss
conditional 45363882499 # 93.602 conditional branches per 1000 inst
indirect 600244067 # 1.239 indirect branches per 1000 inst
slots 1343249001602 #
retiring 478430720105 # 35.6% (35.6%)
-- ucode 52612206079 # 3.9%
-- fastpath 425818514026 # 31.7%
frontend 121893034355 # 9.1% ( 9.1%)
-- latency 109851965797 # 8.2%
-- bandwidth 12041068558 # 0.9%
backend 685820239852 # 51.1% (51.1%)
-- cpu 556592250765 # 41.4%
-- memory 129227989087 # 9.6%
speculation 58889001730 # 4.4% ( 4.4%)
-- branch mispredict 58820241539 # 4.4%
-- pipeline restart 68760191 # 0.0%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 223946804452 # 0.13 GHz
instructions 484698306885 # 2.16 IPC
l2 access 3201126251 # 6.613 l2 access per 1000 inst
l2 miss 556105648 # 17.37% l2 miss
cpu-cycles 222652406059 # 10.1% memory latency
load stalls 22427575661 # 5.2% l1 bound
l1 miss 10820364309 # 4.6% l2 bound
l2 miss 646810658 # 0.2% l3 bound
l3 miss 172145664 # 0.1% dram bound
store_stalls 44575849 # 0.0% store bound
Process summary
360 processes
9 synthmark.app 177.88 0.39
68 clinfo 17.79 5.66
38 vulkaninfo 0.95 1.53
6 glxinfo:gdrv0 0.15 0.06
6 glxinfo:gl0 0.15 0.06
4 vulkani:disk$0 0.10 0.17
6 clang 0.08 0.04
2 glxinfo 0.07 0.03
2 glxinfo:cs0 0.07 0.02
2 glxinfo:disk$0 0.07 0.02
2 glxinfo:sh0 0.07 0.02
2 glxinfo:shlo0 0.07 0.02
2 llvmpipe-0 0.05 0.09
2 llvmpipe-1 0.05 0.09
2 llvmpipe-10 0.05 0.09
2 llvmpipe-11 0.05 0.09
2 llvmpipe-12 0.05 0.09
2 llvmpipe-13 0.05 0.09
2 llvmpipe-14 0.05 0.09
2 llvmpipe-15 0.05 0.09
2 llvmpipe-2 0.05 0.09
2 llvmpipe-3 0.05 0.09
2 llvmpipe-4 0.05 0.09
2 llvmpipe-5 0.05 0.09
2 llvmpipe-6 0.05 0.09
2 llvmpipe-7 0.05 0.09
2 llvmpipe-8 0.05 0.09
2 llvmpipe-9 0.05 0.09
6 php 0.04 0.09
3 rocminfo 0.03 0.00
1 lspci 0.00 0.02
1 ps 0.00 0.01
82 sh 0.00 0.00
13 gcc 0.00 0.00
12 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
3 gmain 0.00 0.00
3 synthmark 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 dconf worker 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 qdbus 0.00 0.00
1 readlink 0.00 0.00
1 realpath 0.00 0.00
1 sed 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 block
98316) synthmark cpu=12 start=39.59 finish=69.64
98317) synthmark.app cpu=13 start=39.60 finish=69.64
98318) synthmark.app cpu=15 start=39.60 finish=69.60
98319) synthmark.app cpu=0 start=39.60 finish=69.60
98320) synthmark cpu=12 start=73.64 finish=103.69
98321) synthmark.app cpu=5 start=73.65 finish=103.69
98322) synthmark.app cpu=5 start=73.65 finish=103.65
98323) synthmark.app cpu=7 start=73.65 finish=103.65