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Date: Wed, 18 Feb 2015 16:41:45 +0300
From: Andrey Repin <anrdaemon@yandex.ru>
Reply-To: cygwin@cygwin.com
Message-ID: <564682794.20150218164145@yandex.ru>
To: "Dennis Hagarty (dehagart)" <dehagart@cisco.com>, cygwin@cygwin.com
Subject: Re: Very slow Cygwin startup on Windows 7
In-Reply-To: <3FEEC3A37A0B0A48AA326075128C32EE4EE26D98@xmb-rcd-x01.cisco.com>
References: <3FEEC3A37A0B0A48AA326075128C32EE4DC9F0E8@xmb-rcd-x01.cisco.com>         <87mw4nugdx.fsf@Rainer.invalid>     <3FEEC3A37A0B0A48AA326075128C32EE4DC9F137@xmb-rcd-x01.cisco.com>    <869208266.20150210030528@yandex.ru>    <3FEEC3A37A0B0A48AA326075128C32EE4EE263B8@xmb-rcd-x01.cisco.com>   <435476431.20150217135513@yandex.ru>   <3FEEC3A37A0B0A48AA326075128C32EE4EE266FE@xmb-rcd-x01.cisco.com>  <455098417.20150218134327@yandex.ru>  <3FEEC3A37A0B0A48AA326075128C32EE4EE26D98@xmb-rcd-x01.cisco.com>
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Greetings, Dennis Hagarty (dehagart)!

>>>>Could you please do me a favor and repeat the test with a little deviation of
>>>>my previous suggestion?

>>>>1. Remove /etc/{nsswitch.conf,passwd,group} files. (Rename, move away - by
>>>>your choice.)
>>>>2. Stop cygserver, if it is running, and any other Cygwin-related programs.
>>>>3. Start the mintty (elevated, if need) with write access to /etc. Supposedly,
>>>>this will be slow.
>>>>4. Make sure id -G lists all the groups you're member of.
>>>>The `id -znG | tr "\0" "\n"` would probably be more visible.
>>>>5. Repeat the steps from previous suggestion.
>>>>    getent passwd $(id -u) > /etc/passwd
>>>>    getent group $(id -G) > /etc/group
>>>>    printf "%s\n" "passwd: files db" "group: files db" > /etc/nsswitch.conf
>>>> 6. Close and restart mintty

>>> After I'd run the id -znG, it found 87 groups.
>>> Then I did this (even with cygserver running)

>>> ~ getent passwd $(id -u) > /etc/passwd
>>> ~ getent group $(id -G) > /etc/group
>>>       0 [main] getent 48156 transport_layer_pipes::connect: lost connection to cygserver, error = 2

>>That prompts to repeat the previous question from Corinna: are you by chance
>>remote from your DC? (VPN connection?)

> Yes - although it's pretty quick link (and not the other side of the world).
> Seems to be a node called  \\ADC-AER1-C1-2 

> Pinging adc-aer1-c1-2.cisco.com [173.xx.xxx.xxx] with 32 bytes of data:
> Reply from 173.38.200.156: bytes=32 time=36ms TTL=124
> Reply from 173.38.200.156: bytes=32 time=44ms TTL=124
> Reply from 173.38.200.156: bytes=32 time=37ms TTL=124
> Reply from 173.38.200.156: bytes=32 time=56ms TTL=124


>>> ~ wc -l /etc/group
>>> 58 /etc/group
>>
>>> Since it seems like cygserver stopped, it took a while to complete.
>>> Anyway, with cygserver stopped, I ran the getent again elevated and got 83.
>>> ~ wc -l /etc/group
>>> 83 /etc/group
>>
>>83 vs. 87, still not the right number.
>>
>>> Not really sure how many groups I'm a member of (in another tool), but seems about right.

>>Anyway, how was the results after these manipulations?

> Performance now is good - as long as the cygserver is running.
> With:
>>cmd /v:on /c "echo !TIME! & C:\cygwin64\bin\mintty.exe /bin/echo "test" & echo !TIME!"
> 12:13:43.53
> 12:13:43.65 = 0:00.12

> Without:
> C:\Users\dehagart>cmd /v:on /c "echo !TIME! & C:\cygwin64\bin\mintty.exe /bin/echo "test" & echo !TIME!"
> 12:14:36.28
> 12:16:24.85 = 1:48.57

Thank you. Not the results I was hoping for, but thank you anyway.
Please continue investigation with Corinna.
And be sure your help is much appreciated :)


--
WBR,
Andrey Repin (anrdaemon@yandex.ru) 18.02.2015, <16:40>

Sorry for my terrible english...


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