Re: load average calculation failing -- fixed by Windows update

[Mark Geisert <mark@maxrnd.com>]

Jon Turney wrote:
> On 10/05/2022 09:34, Mark Geisert wrote:
>> Corinna Vinschen wrote:
>>> [redirect back to cygwin-developers]
> 
>>>
>>>>> 0x800007D0 == PDH_CSTATUS_NO_MACHINE. The code (at line 68 mentioned
>>>
>>> This is a weird error.
>>>
>>>    "The path did not contain a computer name and the function was unable
>>>     to retrieve the local computer name."
>>>
>>> Yeah, sure.
>>>
>>> Mark, did you try to add the computer name to the path by calling
>>> GetComputerName() in load_init?
> 
> As we've seen before, this error also seems to be also used for "not authorized" 
> problems.
> 
> https://sourceware.org/git/?p=newlib-cygwin.git;a=commitdiff;h=de7f13aa9acec022ad1e4b3f929d4dc982ddf60b 

Sheesh.  This all seems entirely too complicated.

But thankfully, after installing latest Windows patches (from yesterday's MS Patch 
Tuesday) I find myself on W10 21H2 Build 19044.1706.  Xload, uptime, and Jon's 
initial PoC code now show good load averages.  I had previously been on Build 
19044.1645.

The first counter read now gets error 0xC0000BC6 == PDH_INVALID_DATA, but no 
errors on subsequent counter reads.  This sounds like it now matches what Corinna 
reported for W11.  I wonder if she's running build 1706 already.

It seems to me MS broke PDH or its interfacing for one build, 1645, and fixed it 
for the next, 1706.  That's all I can surmise from the data we have.

I think my work and/or damage here (on this topic) is done.
Cheers,

..mark