Test to encrypt a 2.7GB file with GnuPG. Looks like a single-threaded program that runs in about a minute.
Topdown profile shows speculation stalls as particularly high and backend stalls as low.
AMD metrics confirm a single-threaded program. Little floating point and little L2 access. Not many indirect branches but still very high branch mis-prediction. Frontend stalls are more latency than bandwidth
elapsed 169.011
on_cpu 0.057 # 0.92 / 16 cores
utime 151.248
stime 3.799
nvcsw 2031 # 72.85%
nivcsw 757 # 27.15%
inblock 0 # 0.00/sec
onblock 4207744 # 24896.30/sec
cpu-clock 155083495851 # 155.083 seconds
task-clock 155087202998 # 155.087 seconds
page faults 148931 # 960.305/sec
context switches 3455 # 22.278/sec
cpu migrations 256 # 1.651/sec
major page faults 2 # 0.013/sec
minor page faults 148929 # 960.292/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 204801389499 # 146.104 branches per 1000 inst
branch misses 14376986247 # 7.02% branch miss
conditional 191213671302 # 136.411 conditional branches per 1000 inst
indirect 142014949 # 0.101 indirect branches per 1000 inst
cpu-cycles 715665699465 # 0.27 GHz
instructions 1400096299132 # 1.96 IPC
slots 1434267036432 #
retiring 445645996834 # 31.1% (31.1%)
-- ucode 47579507 # 0.0%
-- fastpath 445598417327 # 31.1%
frontend 473772218359 # 33.0% (33.0%)
-- latency 248750339964 # 17.3%
-- bandwidth 225021878395 # 15.7%
backend 214028036606 # 14.9% (14.9%) low
-- cpu 63033651425 # 4.4%
-- memory 150994385181 # 10.5%
speculation 300713825870 # 21.0% (21.0%) high
-- branch mispredict 300208618021 # 20.9%
-- pipeline restart 505207849 # 0.0%
smt-contention 106654498 # 0.0% ( 0.0%)
cpu-cycles 718195890990 # 0.27 GHz
instructions 1400152976411 # 1.95 IPC
instructions 467215406957 # 17.124 l2 access per 1000 inst
l2 hit from l1 4745977338 # 1.02% l2 miss
l2 miss from l1 31050704 #
l2 hit from l2 pf 3203773986 #
l3 hit from l2 pf 17341357 #
l3 miss from l2 pf 33443160 #
instructions 467198274463 # 23.010 float per 1000 inst
float 512 43 # 0.000 AVX-512 per 1000 inst
float 256 654 # 0.000 AVX-256 per 1000 inst
float 128 10750115468 # 23.010 AVX-128 per 1000 inst
float MMX 0 # 0.000 MMX per 1000 inst
float scalar 0 # 0.000 scalar per 1000 inst
Intel metrics
elapsed 205.884
on_cpu 0.058 # 0.93 / 16 cores
utime 189.745
stime 2.491
nvcsw 1952 # 70.17%
nivcsw 830 # 29.83%
inblock 0 # 0.00/sec
onblock 4196488 # 20382.77/sec
cpu-clock 192257964300 # 192.258 seconds
task-clock 192261256286 # 192.261 seconds
page faults 138112 # 718.356/sec
context switches 3632 # 18.891/sec
cpu migrations 281 # 1.462/sec
major page faults 0 # 0.000/sec
minor page faults 138112 # 718.356/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 203656765790 # 145.850 branches per 1000 inst
branch misses 14459480379 # 7.10% branch miss
conditional 203656778046 # 145.850 conditional branches per 1000 inst
indirect 146325163 # 0.105 indirect branches per 1000 inst
slots 4363710725378 #
retiring 1314816821795 # 30.1% (30.1%)
-- ucode 86447683819 # 2.0%
-- fastpath 1228369137976 # 28.1%
frontend 819185548728 # 18.8% (18.8%)
-- latency 377630877144 # 8.7%
-- bandwidth 441554671584 # 10.1%
backend 510111406692 # 11.7% (11.7%) low
-- cpu 416279869681 # 9.5%
-- memory 93831537011 # 2.2%
speculation 1725289697089 # 39.5% (39.5%) high
-- branch mispredict 1713750484505 # 39.3%
-- pipeline restart 11539212584 # 0.3%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 727399626683 # 0.22 GHz
instructions 1396330348949 # 1.92 IPC
l2 access 11452117161 # 8.202 l2 access per 1000 inst
l2 miss 432509657 # 3.78% l2 miss
Process overview shows the gpg process and rest is test system overhead.
363 processes
3 gpg 149.76 1.32
68 clinfo 17.20 5.72
38 vulkaninfo 0.95 1.33
6 glxinfo:gdrv0 0.15 0.04
6 glxinfo:gl0 0.15 0.04
4 vulkani:disk$0 0.10 0.14
6 clang 0.08 0.04
2 glxinfo 0.07 0.02
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
6 php 0.05 0.08
2 llvmpipe-0 0.05 0.07
2 llvmpipe-1 0.05 0.07
2 llvmpipe-10 0.05 0.07
2 llvmpipe-11 0.05 0.07
2 llvmpipe-12 0.05 0.07
2 llvmpipe-13 0.05 0.07
2 llvmpipe-14 0.05 0.07
2 llvmpipe-15 0.05 0.07
2 llvmpipe-2 0.05 0.07
2 llvmpipe-3 0.05 0.07
2 llvmpipe-4 0.05 0.07
2 llvmpipe-5 0.05 0.07
2 llvmpipe-6 0.05 0.07
2 llvmpipe-7 0.05 0.07
2 llvmpipe-8 0.05 0.07
2 llvmpipe-9 0.05 0.07
3 rocminfo 0.03 0.00
1 dd 0.00 1.72
1 rm 0.00 0.25
1 lspci 0.00 0.02
84 sh 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 gnupg 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 bash 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 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
The core computation sections
1173365) gnupg cpu=4 start=7.23 finish=57.56
1173366) gnupg cpu=5 start=7.24 finish=7.24
1173367) gpg cpu=14 start=7.24 finish=57.56
1173372) gnupg cpu=13 start=61.57 finish=111.85
1173373) gnupg cpu=14 start=61.57 finish=61.57
1173374) gpg cpu=8 start=61.57 finish=111.85
1173376) gnupg cpu=4 start=115.86 finish=166.37
1173377) gnupg cpu=5 start=115.86 finish=115.86
1173378) gpg cpu=14 start=115.86 finish=166.37