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Reply-To: Brian DOT Inglis AT SystematicSw DOT ab DOT ca
Subject: Re: getent doesn't work properly
To: cygwin AT cygwin DOT com
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From: Brian Inglis <Brian DOT Inglis AT SystematicSw DOT ab DOT ca>
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Date: Mon, 28 Oct 2019 18:03:20 -0600
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On 2019-10-28 11:29, Andrey Repin wrote:
>>> You aren't running Cygwin Cygserver and I don't see your nsswitch setup.
>> I have the default nsswitch - This is my configuration:
>> # /etc/nsswitch.conf
>> #
>> #    This file is read once by the first process in a Cygwin process tree.
>> #    To pick up changes, restart all Cygwin processes.  For a description
>> #    see https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-mapping-nsswitch
>> #
>> # Defaults:
>> # passwd:   files db
>> # group:    files db
>> # db_enum:  cache builtin
>> # db_home:  /home/%U
>> # db_shell: /bin/bash
>> # db_gecos: <empty>
> That should be sufficient for most use cases.

>> Why do I need cygserver?
> You don't exactly NEED cygserver. But if you have
> 1. Domain (or even multi-domain) environment.
> 2. and/or remote/slow/flaky connection to the domain server.
> cygserver may provide a smoother experience as it caches some information
> related to names resolution.

Running cygserver will also cache info and speed up processing if you run many:

- service daemons under Cygwin, especially cron jobs or ssh sessions
- concurrent processes, especially deeply nested, forked, or background
  (some cron jobs background subprocesses *heavily* to reduce run time)
- XSI IPC message queues
- semaphores
- shared memory segments

otherwise that has to be managed by either the process itself or the root parent
process, possibly in parallel threads.

-- 
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada

This email may be disturbing to some readers as it contains
too much technical detail. Reader discretion is advised.

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