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Re: Xwin 1.14.2 (64 bit) extreme memory page faulting
- From: Erik Soderquist <erik dot soderquist at gmail dot com>
- To: cygwin-xfree at cygwin dot com
- Date: Thu, 3 Oct 2013 12:46:27 -0400
- Subject: Re: Xwin 1.14.2 (64 bit) extreme memory page faulting
- Authentication-results: sourceware.org; auth=none
- References: <CACoZoo0vCM6TeFqeqkAUOPqs5GECZzmFYOzHPh1SOAm1rzuOEA at mail dot gmail dot com> <524CA379 dot 207 at cs dot utoronto dot ca> <CACoZoo2VtsGHdJ=hyfO0S=1ku5z0Mv51MFoaoJGGnPZdYGigpw at mail dot gmail dot com> <524D78AF dot 3040607 at cs dot utoronto dot ca> <CACoZoo3eiCNc7JE58WtAGLFajkSS0CddUTFQiJUVVD7Cri33Yg at mail dot gmail dot com> <524D9AEB dot 7030507 at cs dot utoronto dot ca>
- Reply-to: cygwin-xfree at cygwin dot com
<snip>
> I just fired up a 64-bit Ubuntu VM I had laying around, installed firefox,
> and tunneled it to cygwin64/X on my win7-64 machine. X isn't even visible in
> the task manager when I sort descending by PF delta, CPU, or memory. This in
> spite of having half a dozen tabs with content (including ads, an html5
> game, and a youtube video playing).
>
> Opening a couple dozen more empty tabs brought PFdelta up to the ~7k range,
> but the rate dropped back to ~0 as soon as the dust settled. Typing remains
> fully responsive, and I'm officially out of ideas.
>
>
> Ryan
That is the kind of responsiveness I expect, and what other people
I've discussed this with experience, which is why I think it is
something unusual in my setup or environment... Unfortunately, I'm
currently unable to find it myself, and can reliably reproduce the
issue even in a virgin environment.
So far, the only common factors (that I see) across each of these has
been my Linux host, (CentOS 5.8 at present) and my various
tabs/accounts. However, I am at a complete loss as to even guess at
how these could affect page faulting on the X server.
For reference: on the Linux host, when the Windows host is
experiencing these page faults, the Linux host is reporting 20-30% CPU
usage overall, no swap usage.
--- Erik
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