[docs] record some micro-benchmarks
- to keep some record of it - to help people estimate the cost of primitives Change-Id: I5c29886c5aacf87b3d8c5fda54d8320dfebd7292
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Carlos Pizano
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@@ -20,11 +20,10 @@ changes, and locking (via futexes).
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Currently there are some temporary syscalls that have been used for early
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bringup work, which will be going away in the future as the long term
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syscall API/ABI surface is finalized. The expectation is that there will
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be 10s, not 100s of syscalls.
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be about 100 syscalls.
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Magenta syscalls are generally non-blocking. The wait (one, many, set)
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family of syscalls, ioport reads, and thread sleep being the notable
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exceptions.
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Magenta syscalls are generally non-blocking. The wait_one, wait_many
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port_wait and thread sleep being the notable exceptions.
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This page is a non-comprehensive index of the magenta documentation.
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@@ -39,3 +38,4 @@ This page is a non-comprehensive index of the magenta documentation.
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+ [Thread Objects](docs/objects/thread.md)
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+ [Handles](docs/handles.md)
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+ [System Calls](docs/syscalls.md)
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+ [Micro-benchmarks](docs/benchmarks/microbenchmarks.md)
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@@ -0,0 +1,131 @@
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### Micro-benchmarks
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The benchmarks recorded below are obtained by running magenta-benchmarks in a
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release build of fuchsia via ssh. When the benchmarks are recorded the Fuchsia user
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shell (GPU-accelerated) is running but no user has yet logged in.
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These are the running processes at the time of the benchmark:
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```
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ps
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TASK PSS PRIVATE SHARED NAME
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j:1029 796.8M 783.9M root
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p:1044 558.8M 558.8M 28k bin/devmgr
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j:1078 48.1M 39.6M magenta-drivers
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p:1752 180.8k 180k 28k devhost:root
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p:1791 1596.8k 1596k 28k devhost:acpi
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p:1840 592.8k 592k 28k devhost:misc
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p:4684 35.0M 26.7M 16.5M devhost:pci#1:8086:5916
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p:4730 1420.8k 1420k 28k devhost:pci#3:8086:9d2f
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p:4858 8540.8k 8540k 28k devhost:pci#6:8086:9d03
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p:4979 532.8k 532k 28k devhost:pci#14:8086:9d71
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p:5052 546.8k 380k 360k devhost:pci#16:8086:15d8
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j:1179 5745.4k 1624k magenta-services
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p:1182 256.8k 256k 28k crashlogger
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p:1330 4490.8k 440k 8128k virtual-console
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p:1425 266.8k 200k 160k netsvc
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p:4547 176.8k 176k 28k sh:console
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p:6058 184.8k 184k 28k vc:sh
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p:6093 184.8k 184k 28k vc:sh
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p:6148 184.8k 184k 28k vc:sh
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j:1180 184.3M 183.9M fuchsia
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p:1234 588.8k 588k 28k appmgr
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j:2000 183.8M 183.3M root
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p:2045 688.8k 688k 28k bootstrap
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j:2336 183.1M 182.6M boot
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p:2427 1320.8k 1320k 28k wlanstack
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p:2467 316.8k 316k 28k device_runner
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p:2505 320.8k 320k 28k listen
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p:2707 3532.8k 3432k 228k netstack
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p:3001 288.8k 288k 28k device_runner_monitor
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p:3101 468.8k 468k 28k netconnector
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p:3412 336.8k 336k 28k trace_manager
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p:3529 356.8k 356k 28k root_presenter
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p:3587 124.2M 124.0M 404k flutter:userpicker_device_shell
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p:3810 288.8k 288k 28k ktrace_provider
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p:3955 332.8k 332k 28k view_manager
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p:4110 49.2M 49.1M 356k scene_manager
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p:4269 456.8k 456k 28k icu_data
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p:4404 456.8k 456k 28k fonts
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p:24555 296.8k 296k 28k oauth_token_manager
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j:3240 1102.3k 1100k tcp:22
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j:24964 1102.3k 1100k fe80::a2b3:ccff:fefb:4467:43218
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p:24965 712.8k 712k 28k /system/bin/sshd
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p:25157 216.8k 216k 28k /boot/bin/sh
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p:25311 172.8k 172k 28k /boot/bin/ps
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```
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The typical thread load of the system before running the benchmarks:
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```
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cpu load sched (cs ylds pmpts) pf sysc ints (hw tmr tmr_cb) ipi (rs gen)
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0 0.01% 32 0 0 2 51 0 3 3 9 0
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1 0.03% 255 0 0 3 496 0 115 115 10 0
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2 0.45% 55 0 0 1 4218 6 11 11 8 0
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3 0.02% 24 0 0 0 44 0 7 7 5 0
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cpu load sched (cs ylds pmpts) pf sysc ints (hw tmr tmr_cb) ipi (rs gen)
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0 0.00% 17 0 0 1 27 0 1 1 9 0
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1 0.00% 13 0 0 1 19 0 2 2 8 0
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2 0.48% 297 0 0 1 3800 5 129 129 6 1
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3 0.02% 28 0 0 3 45 0 5 5 9 1
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cpu load sched (cs ylds pmpts) pf sysc ints (hw tmr tmr_cb) ipi (rs gen)
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0 0.16% 236 0 0 16 483 11 62 62 36 25
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1 0.19% 96 0 0 35 344 0 5 5 27 39
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2 0.57% 161 0 0 15 4715 6 15 15 53 31
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3 0.15% 196 0 0 20 492 0 60 60 32 28
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```
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It is believed that the running processes has a very minor impact on benchmark results.
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## Run 8-17-2017
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Intel NUC Model: NUC7i3BNK
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Processor: i3-7100U @ 2.40 GHz (Cache: 3M)
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Memory type: DDR4-2133 1.2V SO-DIMM
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Max Memory Bandwidth 34.1 GB/s
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```
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buildid: GIT_5E66D79D5A167878ACF9A944AF92D0EBB6A60DF2
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ELF build ID: d1af6f49136a548ddc216a079f29341e7f4f8df9
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Benchmark Time CPU Iterations
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---------------------------------------------------------------------
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Channel/Create 896 ns 897 ns 778195
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Channel/Write/64 728 ns 730 ns 950200 83.6564MB/s
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Channel/Write/1024 771 ns 773 ns 906612 1.23397GB/s
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Channel/Write/32k 2147 ns 2149 ns 323812 14.1992GB/s
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Channel/Write/64k 3600 ns 3599 ns 192480 16.9572GB/s
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Channel/Read/64 717 ns 718 ns 972365 85.0027MB/s
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Channel/Read/1024 750 ns 751 ns 934482 1.27003GB/s
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Channel/Read/32k 2102 ns 2101 ns 332341 14.5272GB/s
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Channel/Read/64k 3550 ns 3545 ns 198392 17.217GB/s
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ChannelMultiProcess/Write/64 88319 ns 1114 ns 100000 54.7862MB/s
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ChannelMultiProcess/Write/1024 238838 ns 1779 ns 100000 548.933MB/s
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ChannelMultiProcess/Write/32k 322097 ns 22632 ns 38626 1.34843GB/s
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ChannelMultiProcess/Write/64k 207986 ns 39543 ns 19765 1.54353GB/s
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ChannelMultiProcess/Read/64 1141 ns 1025 ns 671510 59.561MB/s
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ChannelMultiProcess/Read/1024 1292 ns 1148 ns 602280 850.681MB/s
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ChannelMultiProcess/Read/32k 19830 ns 5456 ns 128700 5.59307GB/s
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ChannelMultiProcess/Read/64k 38534 ns 10650 ns 67404 5.73121GB/s
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Event/Create 591 ns 594 ns 1181620
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Event/Close 681 ns 680 ns 1032407
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Event/Signal 201 ns 199 ns 3506137
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EventPair/Create 870 ns 871 ns 802191
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Fifo/Create 1030 ns 1028 ns 685065
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Port/Create/0 607 ns 610 ns 1146240
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Port/Create/0 607 ns 609 ns 1147258
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Socket/Write/64 698 ns 701 ns 1001960 87.0535MB/s
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Socket/Write/1024 717 ns 720 ns 969184 1.3249GB/s
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Socket/Write/32k 3055 ns 3047 ns 230028 10.0172GB/s
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Socket/Write/64k 5372 ns 5327 ns 131993 11.458GB/s
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Socket/Read/64 649 ns 652 ns 1073736 93.671MB/s
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Socket/Read/1024 673 ns 674 ns 1039222 1.41413GB/s
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Socket/Read/32k 2933 ns 2919 ns 240752 10.4564GB/s
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Socket/Read/64k 5986 ns 5945 ns 122719 10.2659GB/s
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Syscall/Null 69 ns 68 ns 10327057
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Syscall/ManyArgs 77 ns 76 ns 9134297
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Thread/Create 4992 ns 4967 ns 141135
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```
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