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<p class="MsoNormal" style="margin-left:36.0pt">The solution seems to be to cache the user info locally instead of it having to query the domain controller everytime.
<o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Ah yes: here’s a better expressed post:
<a href="http://bjg.io/guide/cygwin-ad/">http://bjg.io/guide/cygwin-ad/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">I did the following<o:p></o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-left:0cm;mso-list:l0 level1 lfo1"><span style="mso-fareast-language:EN-US">commented out the “db” part for passwd and group in c:/msys64/etc/nsswitch.conf, to give this:<o:p></o:p></span></li></ul>
<p class="Code"><b><span style="mso-fareast-language:EN-US"># Begin /etc/nsswitch.conf<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">passwd: files #db<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">group: files #db<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">db_enum: cache builtin<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">db_home: windows<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">db_shell: cygwin desc<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">db_gecos: cygwin desc<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US"># End /etc/nsswitch.conf<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<ul style="margin-top:0cm" type="disc">
<li class="MsoListParagraph" style="margin-top:6.0pt;margin-bottom:6.0pt;margin-left:0cm;mso-list:l0 level1 lfo1">
<span style="mso-fareast-language:EN-US">Note that I also set db_home to ‘windows’, so that it gets my windows home directory. I think an explicit path would also be OK<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-top:6.0pt;margin-bottom:6.0pt;margin-left:0cm;mso-list:l0 level1 lfo1">
<span style="mso-fareast-language:EN-US">However I discovered that having just “files” for “passwd” in nsswitch.conf means that
<b>ssh looks in c:/msys64/etc/passwd</b> to find the home directory for .ssh, <b>
totally ignoring</b> the $HOME environment variable, and ignoring the db_home setting.
<o:p></o:p></span></li><li class="MsoListParagraph" style="margin-top:6.0pt;margin-bottom:6.0pt;margin-left:0cm;mso-list:l0 level1 lfo1">
<span style="mso-fareast-language:EN-US">But there IS no /etc/passwd file! So I created one<o:p></o:p></span></li></ul>
<p class="Code"><b><span style="mso-fareast-language:EN-US">mkpasswd -c > /etc/passwd<o:p></o:p></span></b></p>
<p class="Code"><b><span style="mso-fareast-language:EN-US">mkgroup -c > /etc/group<o:p></o:p></span></b></p>
<p class="MsoListParagraph" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:36.0pt">
<span style="mso-fareast-language:EN-US">And then I manually edited /etc/passwd to put in the correct home directory.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:36.0pt">
<span style="mso-fareast-language:EN-US">What a saga!<o:p></o:p></span></p>
<p class="MsoListParagraph" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:36.0pt">
<span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
<span style="mso-fareast-language:EN-US">Is it faster now? Hard to tell.<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
<span style="mso-fareast-language:EN-US">Simon<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:6.0pt;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
<span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Phyx <lonetiger@gmail.com>
<br>
<b>Sent:</b> 03 April 2018 07:00<br>
<b>To:</b> Simon Peyton Jones <simonpj@microsoft.com><br>
<b>Cc:</b> ghc-devs@haskell.org<br>
<b>Subject:</b> Re: More windows<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi Simon, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hmm I'm not sure about replacing sh with bash. I think bash has some Non-POSIX extensions that may affect the behavior of valid posix scripts. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Is bash --login slow as well? How about once sh or bash starts, are commands still slow then? <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I assume your computer is domain joined and you may be hitting a very long standing issue with certain domain joined machines <a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FAlexpux%2FMSYS2-packages%2Fissues%2F138%23issuecomment-70813762&data=02%7C01%7Csimonpj%40microsoft.com%7C185492e20be9494ebdf008d599282bcd%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636583320164876915&sdata=MYHQSKqds%2FJXXEkX1jXF2psZmZntrrgtBqEUXtfGQBs%3D&reserved=0">https://github.com/Alexpux/MSYS2-packages/issues/138#issuecomment-70813762</a><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">The solution seems to be to cache the user info locally instead of it having to query the domain controller everytime. See solution 2 here <br>
<a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgist.github.com%2Fk-takata%2F9b8d143f0f3fef5abdab&data=02%7C01%7Csimonpj%40microsoft.com%7C185492e20be9494ebdf008d599282bcd%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636583320164876915&sdata=Qb1BMV9NoSijP%2F%2F5e4ZNNJ%2FGHhMrGksFTM6eVRL4dQQ%3D&reserved=0">https://gist.github.com/k-takata/9b8d143f0f3fef5abdab</a>
for instructions <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Does that help the problem? <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I believe you had a similar problem last time setting up a new machine. At that time magit was also slow. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Kind regards, <o:p></o:p></p>
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<p class="MsoNormal">Tamar <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Mon, Apr 2, 2018, 23:23 Simon Peyton Jones <<a href="mailto:simonpj@microsoft.com">simonpj@microsoft.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Tamar<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’ve noticed that “sh” (which is invoked at lot by make etc) takes AGES to start up. At least I think it’s ‘sh’ that is causing the delay.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I think it’s c:/msys64/usr/bin/sh.exe<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">From searching the web (eg
<a href="https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww2.cs.duke.edu%2Fcsl%2Fdocs%2Funix_course%2Fintro-60.html&data=02%7C01%7Csimonpj%40microsoft.com%7C185492e20be9494ebdf008d599282bcd%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636583320164876915&sdata=74ecRU4VAdzlHW1Tjul6VEqdxsEsnd7xBSYnMoYsqfg%3D&reserved=0" target="_blank">
https://www2.cs.duke.edu/csl/docs/unix_course/intro-60.html</a>) it seems likely that it executes c:/msys64/etc/profile first.
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">And If I put an ‘echo’ at the start and end of that file, they do seem to take place with a significant gap between them.<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I have not started sprinkling more echos, but does that ring any bells?
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Can I replace ‘sh’ with c:/msys64/usr/bin/bash.exe, which seems to be faster? (My evnt variable SHELL already points to bash.exe. ) And if so, how would I do that? An environment
variable. Physically copy bash.exe to sh.exe? Or what?<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Simon<o:p></o:p></p>
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