Encode-flac is one of several quick-running encode benchmarks. These are quick-running high-IPC programs with just a few threads.
This benchmark has a high retirement rate and is more CPU-bound than memory bound with low L2 miss.
AMD metrics show floating point code with not many branches.
elapsed 93.904
on_cpu 0.048 # 0.76 / 16 cores
utime 66.862
stime 4.649
nvcsw 3722 # 87.95%
nivcsw 510 # 12.05%
inblock 0 # 0.00/sec
onblock 5640680 # 60068.41/sec
cpu-clock 71525785522 # 71.526 seconds
task-clock 71529766766 # 71.530 seconds
page faults 162447 # 2271.041/sec
context switches 4477 # 62.589/sec
cpu migrations 270 # 3.775/sec
major page faults 2 # 0.028/sec
minor page faults 162445 # 2271.013/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 65228324666 # 71.850 branches per 1000 inst
branch misses 1591404724 # 2.44% branch miss
conditional 59579320218 # 65.628 conditional branches per 1000 inst
indirect 490112514 # 0.540 indirect branches per 1000 inst
cpu-cycles 323977802299 # 0.22 GHz
instructions 904831623895 # 2.79 IPC
slots 651847439922 #
retiring 311005626504 # 47.7% (47.7%)
-- ucode 65161529 # 0.0%
-- fastpath 310940464975 # 47.7%
frontend 65843616795 # 10.1% (10.1%)
-- latency 46788223812 # 7.2%
-- bandwidth 19055392983 # 2.9%
backend 244873674549 # 37.6% (37.6%)
-- cpu 153325136436 # 23.5%
-- memory 91548538113 # 14.0%
speculation 30043583943 # 4.6% ( 4.6%)
-- branch mispredict 29995069423 # 4.6%
-- pipeline restart 48514520 # 0.0%
smt-contention 80673799 # 0.0% ( 0.0%)
cpu-cycles 323744049163 # 0.22 GHz
instructions 904518738078 # 2.79 IPC
instructions 302395723028 # 15.402 l2 access per 1000 inst
l2 hit from l1 3959063208 # 2.31% l2 miss
l2 miss from l1 61181661 #
l2 hit from l2 pf 652279775 #
l3 hit from l2 pf 20257366 #
l3 miss from l2 pf 25932827 #
instructions 302701668926 # 166.545 float per 1000 inst
float 512 96 # 0.000 AVX-512 per 1000 inst
float 256 548 # 0.000 AVX-256 per 1000 inst
float 128 50413408213 # 166.545 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 113.828
on_cpu 0.048 # 0.76 / 16 cores
utime 83.861
stime 3.127
nvcsw 2748 # 86.50%
nivcsw 429 # 13.50%
inblock 162072 # 1423.83/sec
onblock 5629448 # 49455.54/sec
cpu-clock 86979198019 # 86.979 seconds
task-clock 86983205871 # 86.983 seconds
page faults 146728 # 1686.854/sec
context switches 3522 # 40.491/sec
cpu migrations 337 # 3.874/sec
major page faults 11 # 0.126/sec
minor page faults 146717 # 1686.728/sec
alignment faults 0 # 0.000/sec
emulation faults 0 # 0.000/sec
branches 63988050279 # 70.760 branches per 1000 inst
branch misses 1163447765 # 1.82% branch miss
conditional 63988063783 # 70.760 conditional branches per 1000 inst
indirect 487545594 # 0.539 indirect branches per 1000 inst
slots 1954170198794 #
retiring 942912014258 # 48.3% (48.3%)
-- ucode 99080065199 # 5.1%
-- fastpath 843831949059 # 43.2%
frontend 104879180630 # 5.4% ( 5.4%)
-- latency 40085804158 # 2.1%
-- bandwidth 64793376472 # 3.3%
backend 751955215673 # 38.5% (38.5%)
-- cpu 625940284325 # 32.0%
-- memory 126014931348 # 6.4%
speculation 160840325105 # 8.2% ( 8.2%)
-- branch mispredict 157503943312 # 8.1%
-- pipeline restart 3336381793 # 0.2%
smt-contention 0 # 0.0% ( 0.0%)
cpu-cycles 326126427127 # 0.18 GHz
instructions 904427032045 # 2.77 IPC
l2 access 7350624832 # 8.130 l2 access per 1000 inst
l2 miss 336115083 # 4.57% l2 miss
Process structure shows test overhead (clinfo) is a significant portion of time.
397 processes
50 flac 65.80 3.55
68 clinfo 15.86 5.99
38 vulkaninfo 1.14 1.14
4 vulkani:disk$0 0.12 0.12
6 glxinfo:gdrv0 0.12 0.09
2 llvmpipe-0 0.06 0.06
2 llvmpipe-1 0.06 0.06
2 llvmpipe-10 0.06 0.06
2 llvmpipe-11 0.06 0.06
2 llvmpipe-12 0.06 0.06
2 llvmpipe-13 0.06 0.06
2 llvmpipe-14 0.06 0.06
2 llvmpipe-15 0.06 0.06
2 llvmpipe-2 0.06 0.06
2 llvmpipe-3 0.06 0.06
2 llvmpipe-4 0.06 0.06
2 llvmpipe-5 0.06 0.06
2 llvmpipe-6 0.06 0.06
2 llvmpipe-7 0.06 0.06
2 llvmpipe-8 0.06 0.06
2 llvmpipe-9 0.06 0.06
2 glxinfo 0.06 0.04
2 glxinfo:cs0 0.06 0.04
2 glxinfo:disk$0 0.06 0.04
2 glxinfo:sh0 0.06 0.04
2 glxinfo:shlo0 0.06 0.04
6 php 0.05 0.10
6 clang 0.04 0.07
3 rocminfo 0.03 0.00
1 lspci 0.00 0.03
82 sh 0.00 0.00
13 gcc 0.00 0.00
10 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 encode-flac 0.00 0.00
5 phoronix-test-s 0.00 0.00
4 gmain 0.00 0.00
2 cc 0.00 0.00
2 dconf worker 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
Process structure shows processes launched in groups of 10, though not all of them run as shown by process queue at top of the page.
40642) encode-flac cpu=15 start=5.64 finish=19.65
40643) flac cpu=1 start=5.65 finish=7.29
40644) flac cpu=15 start=7.29 finish=8.67
40645) flac cpu=1 start=8.67 finish=10.03
40646) flac cpu=15 start=10.03 finish=11.41
40647) flac cpu=1 start=11.42 finish=12.78
40648) flac cpu=7 start=12.78 finish=14.16
40649) flac cpu=0 start=14.16 finish=15.53
40652) flac cpu=15 start=15.53 finish=16.91
40653) flac cpu=9 start=16.91 finish=18.28
40654) flac cpu=2 start=18.28 finish=19.65