A set of C++ compiler performance benchmarks. There are seven workloads but the 4th workload takes ~75% of the time and the 3rd workload takes 13% of the time. It looks to be mostly single-threaded.
Topdown profile shows the longest workload is backend bound.
AMD metrics show low frontend stalls, a moderate amount of floating point and low L2 access.
elapsed 4152.282
on_cpu 0.061 # 0.97 / 16 cores
utime 4028.006
stime 0.861
nvcsw 2304 # 10.11%
nivcsw 20482 # 89.89%
inblock 0 # 0.00/sec
onblock 13664 # 3.29/sec
cpu-clock 4029353979373 # 4029.354 seconds
task-clock 4029386424465 # 4029.386 seconds
page faults 161021 # 39.962/sec
context switches 43316 # 10.750/sec
cpu migrations 570 # 0.141/sec
major page faults 2 # 0.000/sec
minor page faults 161019 # 39.961/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 5053525210204 # 148.848 branches per 1000 inst
branch misses 86945679275 # 1.72% branch miss
conditional 4056265160749 # 119.474 conditional branches per 1000 inst
indirect 209326902213 # 6.166 indirect branches per 1000 inst
cpu-cycles 18870987219583 # 0.28 GHz
instructions 33949846979899 # 1.80 IPC
slots 37743699269016 #
retiring 11352214902392 # 30.1% (30.1%)
-- ucode 6928674796 # 0.0%
-- fastpath 11345286227596 # 30.1%
frontend 3328560349222 # 8.8% ( 8.8%)
-- latency 2235953077110 # 5.9%
-- bandwidth 1092607272112 # 2.9%
backend 21313619382131 # 56.5% (56.5%)
-- cpu 10866513489890 # 28.8%
-- memory 10447105892241 # 27.7%
speculation 1747934988006 # 4.6% ( 4.6%)
-- branch mispredict 1746614988191 # 4.6%
-- pipeline restart 1319999815 # 0.0%
smt-contention 1368585558 # 0.0% ( 0.0%)
cpu-cycles 18866636234420 # 0.28 GHz
instructions 33951875487897 # 1.80 IPC
instructions 11323796838173 # 0.388 l2 access per 1000 inst
l2 hit from l1 4168381036 # 0.81% l2 miss
l2 miss from l1 24526213 #
l2 hit from l2 pf 214160338 #
l3 hit from l2 pf 6348965 #
l3 miss from l2 pf 4623318 #
instructions 11315727437411 # 166.242 float per 1000 inst
float 512 68 # 0.000 AVX-512 per 1000 inst
float 256 632 # 0.000 AVX-256 per 1000 inst
float 128 1881152882630 # 166.242 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
instructions 33950818366915 #
opcache 4901373308194 # 144.367 opcache per 1000 inst
opcache miss 2315040492 # 0.0% opcache miss rate
l1 dTLB miss 31795935 # 0.001 L1 dTLB per 1000 inst
l2 dTLB miss 5675743 # 0.000 L2 dTLB per 1000 inst
instructions 33950996153328 #
icache 5905104655 # 0.174 icache per 1000 inst
icache miss 897406472 # 15.2% icache miss rate
l1 iTLB miss 7905312 # 0.000 L1 iTLB per 1000 inst
l2 iTLB miss 0 # 0.000 L2 iTLB per 1000 inst
tlb flush 19119 # 0.000 TLB flush per 1000 inst
Intel metrics
elapsed 4467.158
on_cpu 0.061 # 0.97 / 16 cores
utime 4342.517
stime 0.608
nvcsw 2027 # 9.04%
nivcsw 20386 # 90.96%
inblock 48 # 0.01/sec
onblock 2416 # 0.54/sec
cpu-clock 4343393637491 # 4343.394 seconds
task-clock 4343415265454 # 4343.415 seconds
page faults 152329 # 35.071/sec
context switches 44509 # 10.247/sec
cpu migrations 1413 # 0.325/sec
major page faults 1 # 0.000/sec
minor page faults 152328 # 35.071/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 5050781688168 # 148.766 branches per 1000 inst
branch misses 105902632923 # 2.10% branch miss
conditional 5050781701544 # 148.766 conditional branches per 1000 inst
indirect 209332837884 # 6.166 indirect branches per 1000 inst
slots 98709135518408 #
retiring 36963729109576 # 37.4% (37.4%)
-- ucode 2799260266597 # 2.8%
-- fastpath 34164468842979 # 34.6%
frontend 2241641598206 # 2.3% ( 2.3%) low
-- latency 833581705701 # 0.8%
-- bandwidth 1408059892505 # 1.4%
backend 57810001474260 # 58.6% (58.6%)
-- cpu 47545445041758 # 48.2%
-- memory 10264556432502 # 10.4%
speculation 1590680411824 # 1.6% ( 1.6%)
-- branch mispredict 1587076175543 # 1.6%
-- pipeline restart 3604236281 # 0.0%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 16468750380538 # 0.23 GHz
instructions 33952046966307 # 2.06 IPC
l2 access 11355265062 # 0.334 l2 access per 1000 inst
l2 miss 185670977 # 1.64% l2 miss
cpu-cycles 16465770641254 # 7.9% memory latency
load stalls 1286875525462 # 7.7% l1 bound
l1 miss 11102829142 # 0.1% l2 bound
l2 miss 800643499 # 0.0% l3 bound
l3 miss 306221980 # 0.0% dram bound
store_stalls 6164687781 # 0.0% store bound
Process overview crashed part way through but had the most time in the random_numbers application
260 processes
2 random_numbers 1995.58 0.00
3 mathlib 607.24 0.00
3 ctype 116.07 0.00
3 atol 90.41 0.00
34 clinfo 10.25 3.00
19 vulkaninfo 0.57 0.94
2 vulkani:disk$0 0.06 0.10
6 clang 0.06 0.06
3 glxinfo:gdrv0 0.05 0.06
3 glxinfo:gl0 0.05 0.06
1 llvmpipe-0 0.03 0.05
1 llvmpipe-1 0.03 0.05
1 llvmpipe-10 0.03 0.05
1 llvmpipe-11 0.03 0.05
1 llvmpipe-12 0.03 0.05
1 llvmpipe-13 0.03 0.05
1 llvmpipe-14 0.03 0.05
1 llvmpipe-15 0.03 0.05
1 llvmpipe-2 0.03 0.05
1 llvmpipe-3 0.03 0.05
1 llvmpipe-4 0.03 0.05
1 llvmpipe-5 0.03 0.05
1 llvmpipe-6 0.03 0.05
1 llvmpipe-7 0.03 0.05
1 llvmpipe-8 0.03 0.05
1 llvmpipe-9 0.03 0.05
1 glxinfo 0.03 0.02
1 glxinfo:cs0 0.03 0.02
1 glxinfo:disk$0 0.03 0.02
1 glxinfo:sh0 0.03 0.02
1 glxinfo:shlo0 0.03 0.02
1 ps 0.00 0.01
64 sh 0.00 0.00
13 gcc 0.00 0.00
11 cpp-perf-bench 0.00 0.00
8 systemd-detect- 0.00 0.00
7 gsettings 0.00 0.00
7 stat 0.00 0.00
6 llvm-link 0.00 0.00
4 dconf worker 0.00 0.00
4 gmain 0.00 0.00
4 phoronix-test-s 0.00 0.00
2 which 0.00 0.00
1 cc 0.00 0.00
1 date 0.00 0.00
1 dirname 0.00 0.00
1 grep 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 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
1 xset 0.00 0.00
11 processes running
47 maximum processes
Random numbers is also where it crashed
841561) cpp-perf-bench cpu=9 start=874.16 finish=1871.99
841562) random_numbers cpu=3 start=874.16 finish=1871.99
842462) cpp-perf-bench cpu=9 start=1876.00 finish=2873.75
842463) random_numbers cpu=3 start=1876.00 finish=2873.75
842636) ?? cpu=0 start=2877.75 finish=0.00
842637) ?? cpu=0 start=2877.76 finish=0.00