Re: Cygwin Perl has slowed in recent months

[David Christensen <dpchrist@holgerdanske.com>]

On 5/21/22 10:55, Hans-Bernhard Bröker wrote:
> Am 18.05.2022 um 03:53 schrieb David Christensen:
> 
>  > I am working on a Perl module that runs on various Unix-like platforms.
>  > When I 'make test' on similar computers:
>  >
>  > FreeBSD 12.3-RELEASE         28 wallclock secs
>  > Debian GNU/Linux 11.3          31 wallclock secs
>  > macOS 11.6.2              36 wallclock secs
>  > Windows 7 / Cygwin 3.3.5-1    509 wallclock secs
> 
> Given the complete lack of information about what that Perl module of 
> yours might be doing, that's hard to have a meaningful discussion about.


Thank you for the response.  I was hoping there was a known issue. 
Apparently, not.


The above module is proprietary, so I thought I would profile some 
similar CPAN modules to generate discussion information:

2022-05-22 01:25:39 dpchrist@dht4s3r1 ~
$ systeminfo | egrep '^OS (Name|Version)' ; uname -a ; cygcheck -c cygwin
OS Name:                   Microsoft Windows 7 Professional
OS Version:                6.1.7601 Service Pack 1 Build 7601
CYGWIN_NT-6.1-7601 dht4s3r1 3.3.5-341.x86_64 2022-05-13 12:27 UTC x86_64 
Cygwin
Cygwin Package Information
Package              Version        Status
cygwin               3.3.5-1        OK

2022-05-22 01:26:45 dpchrist@dht4s3r1 ~
$ cpan install Devel::NYTProf
<snip>
t/50-errno.t ............. 1/8
#   Failed test '$! should not be altered by NYTProf i/o'
#   at t/50-errno.t line 58.
#          got: '0'
#     expected: '3'
# Looks like you failed 1 test of 8.
t/50-errno.t ............. Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/8 subtests
<snip>
Test Summary Report
-------------------
t/50-errno.t           (Wstat: 256 Tests: 8 Failed: 1)
   Failed test:  6
   Non-zero exit status: 1
Files=55, Tests=4736, 570 wallclock secs ( 0.64 usr  1.06 sys + 104.19 
cusr 403.73 csys = 509.62 CPU)
Result: FAIL
Failed 1/55 test programs. 1/4736 subtests failed.
make: *** [Makefile:1284: test_dynamic] Error 255
   JKEENAN/Devel-NYTProf-6.11.tar.gz
   /usr/bin/make test -- NOT OK
//hint// to see the cpan-testers results for installing this module, try:
   reports JKEENAN/Devel-NYTProf-6.11.tar.gz


STFW:

https://github.com/Perl/perl5/issues/12389


Any suggestions?

David