Selenium is a browser benchmark. I had difficulty running all browsers, getting messages about compatibility between the driver and the browser, so ran just the first workload (ARES6) with firefox. The benchmark runs just a few processes with a run queue typically around three but overall lower on cpu.

Topdown overview suggests a higher retirement rate with some backend stalls.

AMD metrics show mostly integer code with a high number of branches but not much branch misses and low overall on cpu

elapsed              244.145
on_cpu               0.054          # 0.87 / 16 cores
utime                197.677
stime                13.944
nvcsw                294406         # 99.30%
nivcsw               2063           # 0.70%
inblock              0              # 0.00/sec
onblock              585104         # 2396.54/sec
cpu-clock            210435207355   # 210.435 seconds
task-clock           210714505551   # 210.715 seconds
page faults          2129926        # 10108.113/sec
context switches     298494         # 1416.580/sec
cpu migrations       6407           # 30.406/sec
major page faults    3              # 0.014/sec
minor page faults    2129743        # 10107.244/sec
alignment faults     0              # 0.000/sec
emulation faults     0              # 0.000/sec
branches             531372177492   # 202.159 branches per 1000 inst
branch misses        2256411550     # 0.42% branch miss
conditional          423144534863   # 160.984 conditional branches per 1000 inst
indirect             25126567512    # 9.559 indirect branches per 1000 inst
cpu-cycles           906962298539   # 0.24 GHz
instructions         2617297002300  # 2.89 IPC
slots                1829185537386  #
retiring             847932420279   # 46.4% (46.5%)
-- ucode             1073947736     #     0.1%
-- fastpath          846858472543   #    46.3%
frontend             329493102883   # 18.0% (18.1%)
-- latency           201425245470   #    11.0%
-- bandwidth         128067857413   #     7.0%
backend              604787513825   # 33.1% (33.1%)
-- cpu               138736153423   #     7.6%
-- memory            466051360402   #    25.5%
speculation          42992495765    #  2.4% ( 2.4%)
-- branch mispredict 40637669597    #     2.2%
-- pipeline restart  2354826168     #     0.1%
smt-contention       3973031484     #  0.2% ( 0.0%)
cpu-cycles           904753979023   # 0.24 GHz
instructions         2612030239842  # 2.89 IPC
instructions         873487738738   # 16.964 l2 access per 1000 inst
l2 hit from l1       13244902201    # 14.32% l2 miss
l2 miss from l1      1012185314     #
l2 hit from l2 pf    462440572      #
l3 hit from l2 pf    661522379      #
l3 miss from l2 pf   448806142      #
instructions         873833873136   # 17.897 float per 1000 inst
float 512            127            # 0.000 AVX-512 per 1000 inst
float 256            658            # 0.000 AVX-256 per 1000 inst
float 128            15638730810    # 17.897 AVX-128 per 1000 inst
float MMX            0              # 0.000 MMX per 1000 inst
float scalar         4              # 0.000 scalar per 1000 inst

Intel metrics

elapsed              264.794
on_cpu               0.057          # 0.91 / 16 cores
utime                230.965
stime                11.144
nvcsw                296464         # 98.62%
nivcsw               4148           # 1.38%
inblock              0              # 0.00/sec
onblock              579584         # 2188.81/sec
cpu-clock            239482735231   # 239.483 seconds
task-clock           239746975024   # 239.747 seconds
page faults          2070170        # 8634.812/sec
context switches     302686         # 1262.523/sec
cpu migrations       12715          # 53.035/sec
major page faults    20             # 0.083/sec
minor page faults    2070054        # 8634.328/sec
alignment faults     0              # 0.000/sec
emulation faults     0              # 0.000/sec
branches             531296721916   # 201.841 branches per 1000 inst
branch misses        1711688564     # 0.32% branch miss
conditional          531296788764   # 201.841 conditional branches per 1000 inst
indirect             27582906382    # 10.479 indirect branches per 1000 inst
slots                4960585610336  #
retiring             2395814439979  # 48.3% (48.3%)
-- ucode             76264399787    #     1.5%
-- fastpath          2319550040192  #    46.8%
frontend             1017415424911  # 20.5% (20.5%)
-- latency           470893075843   #     9.5%
-- bandwidth         546522349068   #    11.0%
backend              1351344616681  # 27.2% (27.2%)
-- cpu               1069481769666  #    21.6%
-- memory            281862847015   #     5.7%
speculation          253324512051   #  5.1% ( 5.1%)
-- branch mispredict 232416409730   #     4.7%
-- pipeline restart  20908102321    #     0.4%
smt-contention       0              #  0.0% ( 0.0%)
cpu-cycles           868096608466   # 0.21 GHz
instructions         2721244665497  # 3.13 IPC
l2 access            47512553676    # 18.243 l2 access per 1000 inst
l2 miss              7768419170     # 16.35% l2 miss

Process overview has a timer process with several different worker threads and a high number of threads overall.

1833 processes
	 39 Timer                  195.29    10.97
	 30 StyleThread#1          195.22    10.88
	 30 StyleThread#2          195.21    10.88
	 30 StyleThread#3          195.21    10.88
	 30 StyleThread#4          195.21    10.88
	 30 StyleThread#5          195.21    10.88
	 30 ImageIO                195.20    10.87
	 30 ImageBridgeChld        195.17    10.85
	 30 ProcessHangMon         194.88    10.68
	 36 ProfilerChild          176.81     3.89
	 24 RemVidChild            176.71     3.74
	 90 firefox                 27.92     9.66
	 68 clinfo                  19.50     6.65
	 11 gmain                   18.51     7.14
	  6 AudioIP~allback         18.51     7.14
	  6 Shutdow~minator         18.51     7.14
	  6 Softwar~cThread         18.51     7.14
	  6 gdbus                   18.51     7.14
	  6 Compositor              18.49     7.13
	  6 GMPThread               18.49     7.13
	  6 Permission              18.49     7.13
	  6 SandboxReporter         18.49     7.13
	  6 Renderer                18.47     7.13
	  6 WRWorker#0              18.47     7.13
	  6 WRWorker#1              18.47     7.13
	  6 WRWorker#2              18.47     7.13
	  6 WRWorker#3              18.47     7.13
	  6 WRWorkerLP#0            18.47     7.13
	  6 WRWorkerLP#1            18.47     7.13
	  6 WRWorkerLP#2            18.47     7.13
	  6 WRWorkerLP#3            18.47     7.13
	  6 WRWorkerLP#4            18.47     7.13
	  6 WRWorkerLP#5            18.47     7.13
	  6 WRWorkerLP#6            18.47     7.13
	  6 WRWorkerLP#7            18.47     7.13
	  6 MemoryPoller            18.43     7.06
	  6 glean.dispatche         18.42     7.06
	  6 glean.mps               18.42     7.06
	  6 glean.shutdown          18.42     7.06
	  6 Cookie                  18.25     6.95
	  6 WRRende~ckend#1         18.11     6.88
	  6 WRScene~derLP#1         18.11     6.88
	  6 WRScene~ilder#1         18.11     6.88
	  6 SwComposite             18.11     6.87
	 12 pool-firefox            15.86     5.29
	 15 glean.upload            15.32     4.47
	  3 RemoteLzyStream         14.62     5.96
	  6 SaveScripts             11.67     3.98
	  6 glean.init               6.09     1.80
	  6 glean.ping_dire          6.09     1.79
	  1 FSBroker72380            4.92     1.92
	  1 FSBroker72491            4.92     1.91
	  1 FSBroker72499            4.90     1.91
	  1 FSBroker72510            4.90     1.91
	  1 FSBroker72517            4.90     1.91
	  1 FSBroker72560            4.90     1.91
	  1 FSBroker72401            4.89     1.90
	  1 FSBroker72894            4.88     2.02
	  1 FSBroker73007            4.87     2.02
	  1 FSBroker73014            4.86     2.02
	  1 FSBroker73028            4.86     2.02
	  1 FSBroker73032            4.86     2.02
	  1 FSBroker73077            4.86     2.02
	  1 FSBroker72916            4.84     2.02
	  1 FSBroker71877            4.82     2.01
	  1 FSBroker71990            4.81     2.00
	  1 FSBroker72000            4.80     2.00
	  1 FSBroker72010            4.80     2.00
	  1 FSBroker72019            4.80     2.00
	  1 FSBroker72061            4.80     2.00
	  1 FSBroker71899            4.79     1.99
	  1 FSBroker72941            2.43     0.85
	  1 FSBroker72427            2.39     0.76
	  1 FSBroker71926            2.33     0.93
	  1 FSBroker73197            1.31     0.37
	  1 FSBroker73310            1.30     0.37
	  1 FSBroker72185            1.28     0.39
	  1 FSBroker72294            1.28     0.37
	  1 FSBroker72692            1.26     0.39
	  1 FSBroker72811            1.25     0.39
	  1 FSBroker73220            1.24     0.33
	  1 FSBroker73244            1.23     0.33
	  1 FSBroker72205            1.22     0.33
	  1 FSBroker72228            1.22     0.33
	  1 FSBroker72718            1.20     0.35
	  1 FSBroker72745            1.20     0.35
	 38 vulkaninfo               1.15     1.52
	  6 WebExtensions            1.02     0.37
	  6 BGReadURLs               0.61     0.21
	  7 python3                  0.32     0.08
	  6 glxinfo:gdrv0            0.15     0.13
	  4 vulkani:disk$0           0.12     0.17
	  2 glxinfo                  0.07     0.05
	  2 glxinfo:cs0              0.07     0.05
	  2 glxinfo:disk$0           0.07     0.05