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Date: Mon, 04 Jun 2007 12:08:52 +0200
From: "Nenad Antic (KI/EAB)" <nenad DOT antic AT ericsson DOT com>
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To: Cygwin mailing list <cygwin AT cygwin DOT com>
Subject: Re: Is cygwin much slower on Core 2 Duo
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[snip]
> nope. here's the thread from a while ago:
> http://sourceware.org/ml/cygwin/2007-05/msg00256.html
>
>   
[snip]

Thanks for the replies. I somehow managed to miss this big thread from a 
few weeks back (maybe because the spelling was DualCore(s), as one word, 
throughout).

Anyway, after reading all that, and some more related posts that I 
found, I decided to completely remove the firewall. I have been using 
Kerio PFW for a few years. Prior to that I used to run with ZoneAlarm 
and then Symantec, both of which I ditched for various reasons. Kerio 
used to be an excellent firewall. It is is even somewhat recommended in 
the Cygwin FAQ.

However, a couple of months back I noticed something strange when 
connecting to various unix machines over ssh. It would take over five 
minutes to start vim or mc on the connected machine. This hadn't 
happened before. I couldn't see anything when trying to trace on 
processes or the network traffic. When disabling the "Network security 
module" in the firewall it would go away. I contacted Sunbelt support 
(the new owners) and after some extra data gathering nothing happened. 
Since then I have updated the firewall twice, currently I have the 
latest release. I things have been worse than ever.

Anyway, today I removed the Sunbelt Personal Firewall (as it's called 
now), and tried reinstalling PHP 5.2.2. (This might seem a bit odd, but 
it can serve as a benchmark here. The installation creates subshells at 
least four levels deep.) Before, as I wrote, it took 43 minutes. Now 
after removing the firewall it takes 10 minutes. When disabling 
antivirus (Kaspersky) it takes less than 5 minutes. My computer is 
snappy again!

Even some other minor oddities when booting up seem to be gone. Overall, 
things seem to back to normal again. Except now I have to find a working 
firewall again. Any recommendations anyone?

Conclusion: It would seem that Sunbelt have majorly screwed up the old 
Kerio Personal Firewall. It does not seem fit to be used with Cygwin 
anymore. I even question its usefulness altogether because I suddenly 
lately have had a *lot* of minor strange things happening on my 
computer. It's too early to tell if they are completely gone now though.

/nenad


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