From 305275829a554d9fb4bb73bdead0f8deae838c98 Mon Sep 17 00:00:00 2001 From: Matt Mascarenhas Date: Mon, 9 Apr 2018 18:06:36 +0100 Subject: [PATCH] Annotate bitwise013_1 --- pervognsen/bitwise/bitwise/bitwise013_1.hmml | 31 ++++++++++++++++++++ pervognsen/bitwise/bitwise/bitwise013_2.hmml | 2 ++ 2 files changed, 33 insertions(+) create mode 100644 pervognsen/bitwise/bitwise/bitwise013_1.hmml create mode 100644 pervognsen/bitwise/bitwise/bitwise013_2.hmml diff --git a/pervognsen/bitwise/bitwise/bitwise013_1.hmml b/pervognsen/bitwise/bitwise/bitwise013_1.hmml new file mode 100644 index 0000000..b481bcd --- /dev/null +++ b/pervognsen/bitwise/bitwise/bitwise013_1.hmml @@ -0,0 +1,31 @@ +[video member=pervognsen stream_platform=twitch project=bitwise title="More Code Generation, Part 1" vod_platform=youtube id=uIjd094EKPM annotator=Miblo] +[0:08][Recap and set the stage for the day][:speech] +[0:45][:Run the program and consult the :performance profile with a few words on our :memory allocation] +[5:18][Explain some of the :performance considerations involved in allocating :memory, including TLB (translation lookaside buffer) misses and demand clearing of memory pages][:speech] +[8:02][Recommend Intel VTune[ref + site="IntelĀ® Software" + page="Choose & Download | IntelĀ® System Studio" + url=https://software.intel.com/en-us/system-studio/choose-download] and Windows Performance Toolkit[ref + site="Microsoft Docs" + page="Windows Performance Toolkit" + url=https://docs.microsoft.com/en-us/windows-hardware/test/wpt/]][:research] +[14:44][:Run the program and consult VTune's Advanced Hotspot Analysis, and ReactOS[ref + site=ReactOS + page="ntoskrnl/mm/mmfault.c Source File" + url=https://doxygen.reactos.org/db/d74/mmfault_8c_source.html]][:performance] +[19:25][:Run the program and consult VTune's General Exploration Microarchitecture Analysis, with an explanation of basic sampling vs instrumentation :profiling, and mentions of PerfMon Events[ref + site="PerfMon Events" + url=https://download.01.org/perfmon/index/index.html#pltfrm=skylake.html&pltfrmevent=DTLB_LOAD_MISSES.WALK_ACTIVE] and perf[ref + site="Brendan Gregg" + page="Linux perf Examples" + url=http://brendangregg.com/perf.html]][:performance] +[27:01][Switch back to using xmalloc() and enable the full :"code generation" code][:memory] +[27:29][:Run it to see that it's way slower, and investigate why][:performance] +[36:04][@praet_a51][processExplorer has a search feature that can locate file locks] +[36:36][Continue to investigate this slowdown][:performance :run] +[37:38][Revert buf__grow() to the old committed code][:memory] +[38:35][:Run it to find that it's still very slow][:performance] +[39:24][@badflydog][If you go to 'Users' in Task Manager you can see if the CPU usage comes from other places than your account] +[40:49][@elventhief][Any VTune service process running?] +[40:53][Reboot][:admin] +[/video] diff --git a/pervognsen/bitwise/bitwise/bitwise013_2.hmml b/pervognsen/bitwise/bitwise/bitwise013_2.hmml new file mode 100644 index 0000000..e4e2ea6 --- /dev/null +++ b/pervognsen/bitwise/bitwise/bitwise013_2.hmml @@ -0,0 +1,2 @@ +[video member=pervognsen stream_platform=twitch project=bitwise title="More Code Generation, Part 2" vod_platform=youtube id=PVnRVadB7g0 annotator=] +[/video]