Slow performance on startup

[GoogleCodeExporter]

Hi,

I think this is related to defect #2. I also experience a delay of up to 12 
seconds from the moment when I start puttycyg, until I get the login prompt. 
Taking into accounts the comments by medgar123, I disabled the local FW prior 
to running the below tests:

A. Baseline, without using puttycyg (times reported are averages real time on 5 
consecutive runs)

1. C:\>bash -c "time bash -c 'echo hello world'"         ==> 0m0.108s
2. C:\>bash -c "time bash --login -c 'echo hello world'" ==> 0m3.662s

B. Puttycyg tests (times measured by hand)
I created a shortcut, and set "start in" equal to putty.exe folder. 

1. target "C:\Program Files\PuTTYcyg\putty.exe" -cygterm bash          ==> <1s 
(nearly immediate)
2. target "C:\Program Files\PuTTYcyg\putty.exe" -cygterm -             ==> ~4s
3. target "C:\Program Files\PuTTYcyg\putty.exe" -cygterm bash --login  ==> ~4s

So far, so good - times are consistent with Windows console and bad performance 
is probably caused by cygwin login process itself (btw, I have default profile 
and bashrc). 

Now the next step, using a saved session, shortcut on Destkop
4. target "C:\Program Files\PuTTY\PuTTYcyg\putty.exe" -load CygWin     ==> ~4s
5. same as 4, but shortcut is copied to quick start                    ==> ~4s

Here comes the weird part. When I modify shortcuts 4 & 5, to have the "start 
in" field empty (same target)
6. shortcut on destkop     ==> ~4s, still consistent
7. shortcut in quick start ==> 10-12s !!!!!

Obviously this is not critical as I have found a workaround, but still the 
behavior is quite strange, although I'm not sure it's really caused by puttycyg 
itself.

This behavior was consistently reproduced on 2 different XP machines.

As a side note, if you have any idea why the cygwin login process is taking so 
long, I would love to hear it.


PutTTYcyg version: 20101029
Cygwin version: 1.7.7-1
Windows version: XP SP3 (5.1.2600)

If you are experiencing performance issues, do you have a multi-core system
or multiple CPUs? Yes (Intel Core2 Duo)

Do you have any firewall software installed? Yes, McAfee HIPS (disabled for the 
tests above, but identical results when running)

Original issue reported on code.google.com by dre...@gmail.com on 11 Nov 2010 at 10:33

Attachments:

• putty.reg

[GoogleCodeExporter]

By the way, in case anyone is interested, the reason for the slow startup of 
bash at login, is due to the introduction of bash completion in Cygwin 1.7, the 
loading of which is taking a long time.

Reference: http://sourceware.org/ml/cygwin/2010-08/msg00651.html

Original comment by dre...@gmail.com on 11 Nov 2010 at 6:56

[GoogleCodeExporter]

Thanks for the explanation!  I've updated the FAQ.

Original comment by medgar123 on 15 Nov 2010 at 9:28

• Changed state: WontFix

[GoogleCodeExporter]

Check /etc/profile.d/bash_completion.sh. This by far was taking the most time 
in my situation and I solved it by adding an immediate "return" at the top of 
said script.

Original comment by cla...@anodized.com on 25 Jan 2011 at 10:14