Re: Xwin 1.14.2 (64 bit) extreme memory page faulting

[Ryan Johnson <ryan.johnson@cs.utoronto.ca>]

On 02/10/2013 7:55 PM, Erik Soderquist wrote:
> On Wed, Oct 2, 2013 at 6:51 PM, Ryan Johnson
> <ryan.johnson@cs.utoronto.ca> wrote:
>> I doubt it's an X-server code issue. You tried it on too many machines with
>> problems, and too many other people aren't spamming the list about this,
>> which suggests it's something on your side (like BLODA). Further, the only
>> cygwin bug I've known to cause lots of paging was plugged months ago (it had
>> to do with sparse executable files and should have been irrelevant for this
>> situation anyway).
> The only (known) BLODA I have from that list is the McAfee
> A/V-firewall, which I can't remove, but I believe was completely
> disabled by the above described method.
Unfortunately, McAfee is one of the worst offenders in my experience 
[1]. I seriously doubt you can disable it completely from user space, 
given its habits of interposing on device drivers and burrowing into 
other kernel bits [2].

[1] IMO it's a cure that's worse than the disease, but that's a rant for 
a different thread.

[2] McAfee actually sued MS for "anticompetitive" behavior a while back, 
after the latter closed a bunch of security loopholes in the kernel that 
virus-writers love but McAfee also depended on (including the interrupt 
dispatch table IIRC).

>> My advice: check out the cygwin FAQ about BLODA, uninstall anything listed
>> there (or install a fresh VM image somewhere without those) and try again.
>> If it's still a problem, somebody more familiar with X than me will have to
>> take over...
>>
> If I can get the authorization for a VM test without A/V, I will and
> the results will be posted here either way.  Thank you for your time
> in looking at this.
Good luck!

Ryan


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