On 2022-04-30 08:06, Cary Lewis wrote:
I am experiencing a problem with Cygwin on my Dell 7590.
There is a multi-second delay when starting a cygwin program from a mintty
window, but only the first time that a program is run.
E.g. if run openssl version, then sometimes there is a delay before
anything is outputted.
If I run the command again, there is no delay.
I ran a test with strace, and I believe the delay occurs during the initial
loading of the cygwin dlls:
--- Process 6232 created
--- Process 6232 loaded C:\Windows\System32\ntdll.dll at 00007ffe3b4c0000
--- Process 6232 loaded C:\Windows\System32\kernel32.dll at 00007ffe3a660000
--- Process 6232 loaded C:\Windows\System32\KernelBase.dll at
00007ffe38c60000
--- Process 6232 thread 24052 created
--- Process 6232 thread 28400 created
--- Process 6232 thread 2788 created
--- Process 6232 loaded C:\cygwin64\bin\cygssl-1.1.dll at 00000003f7a60000
--- Process 6232 loaded C:\cygwin64\bin\cygcrypto-1.1.dll at
00000003fa540000
--- Process 6232 loaded C:\cygwin64\bin\cygwin1.dll at 0000000180040000
--- Process 6232 loaded C:\cygwin64\bin\cygz.dll at 00000003f7320000
--- Process 6232 loaded C:\cygwin64\bin\cygwin1.dll at 0000000000da0000
Can anyone suggest why this is happening?
Check the time stamp deltas between strace outputs for large gaps,
especially look for and around open_shared, user_info, and
initialization, e.g.
$ less '+/open_shared|user_info|initialization' ../pcmanfm.strace
and post them here or attach the complete strace startup output for
diagnosis.
The version of cygwin is:
$ uname -r
3.2.0(0.340/5/3)
By the way, I don't see this on my older PC, it's version of cygwin is:
3.1.7(0.340/5/3)
I don't really want to upgrade my older PC to the latest cygwin to test if
the 3.2 version is the culprit or not.
I also upgraded from windows 10 to windows 11 on the PC experiencing the
slow start issue, and that didn't have any effect on the problem.
Search the FAQ for slow e.g.
https://cygwin.com/faq/faq.html#faq.using.startup-slow
This sounds like large initial AD entries load delays, and/or slow
remote DC replies and/or network connection, covered in the list a few
years ago.
The recommended solution is setting up cygserver with appropriate
parameter settings to cache your AD entries across processes.
--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
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