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Date: Thu, 04 Aug 2011 08:07:46 +0200
From: Marco atzeri <marco DOT atzeri AT gmail DOT com>
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To: cygwin AT cygwin DOT com
Subject: Re: Commands slow in wait_sig.
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On 8/4/2011 3:59 AM, texas salsa wrote:
>
>> Nothing in the above indicates that there is a problem in wait_sig.
>> The delta times in an strace do not mean "This is how long an operation
>> took". They just indicate the number of microseconds since the last
>> update to strace output.
>>
>> What the above says is:
>>
>> 1) wait_sig is about to call ReadFile. It has been 9743 microseconds
>> since strace last reported anytinng.
>>
>> 2) There was a lag of 342445 microseconds before something happened in
>> main. That could be symptomatic of the problem which the 8/01 snapshot
>> works around. Or not.
>>
>> If it is only happening on one system that obviously points to BLODA.
>>
>> cgf
>>
>
>
> Hi,
>
> Marco, cgf, Thanks for the reply.
>
> I don't use bash-completion.
> $ cygcheck -cd bash-completion
> Cygwin Package Information
> Package              Version
> $
> I do use symantec antivirus which is in the BLODA list. I disabled it and observed a little performance improvement.
>
>        2 Thu Aug  4 09:41:55     2011
>        1 Thu Aug  4 09:41:56     2011
>        2 Thu Aug  4 09:41:57     2011
>        1 Thu Aug  4 09:41:58     2011
>        2 Thu Aug  4 09:41:59     2011
>        1 Thu Aug  4 09:42:00     2011
>        2 Thu Aug  4 09:42:01     2011
>
>
> But not dramatically. Other PCs I have also have symantec antivirus and no problem. Also in the problem PC symantec antivirus
> had been installed from the beginning and no performance issue was seen before. So I doubt symantec is the main contributor
> to the command delay. But since no other systems with the same dll level do no see the problem, I think it is possible there
> may be other software that interfares cygwin's work. Is there any good way to find a specific BLODA that is having main effect
> to my PC?
>
> Regards,
> Yuta

the only real way is to remove the software and check for improvment.
Antivirus are bad beasts, in one case I saw the disabled AV worst than 
the active one.

Marco



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