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From: "KARR, DAVID" <dk068x AT att DOT com>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: RE: Cygwin Emacs and two other Cygwin processes seem to do a lot of "other" I/O while seemingly idle
Date: Fri, 1 Nov 2013 18:15:26 +0000
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> -----Original Message-----
> Sent: Friday, October 18, 2013 11:20 AM
> Subject: Cygwin Emacs and two other Cygwin processes seem to do a lot of
> "other" I/O while seemingly idle
> 
> Win7x32, Cygwin 1.7.25, Emacs 24.3.1.
> 
> I've noticed when I scan the processes in SysInternals Process Explorer and
> sort by "I/O Delta Other Bytes", my Cygwin Emacs process is almost always at
> the top of the list.  In fact, the next processes in that sorted order are
> "at-spi-bus-launcher" and "at-spi2-registryd", both also from Cygwin.  The
> total from everything else in the list, again for the "I/O Delta Other Bytes"
> value, is just a fraction of the total from these three processes.
> 
> This is happening when Emacs is seemingly idle.
> 
> I'm not sure what "Other" is, compared to read or write.  At the current
> time, when I see it at the top of that sorted list, I don't see the disk
> light flashing a lot, and my cpu indicator is pretty low.  Also at the
> current time, I have four shell buffers open, all of which are just sitting
> at the shell prompt (these are all that show up in "list-processes").
> 
> However, I'm constantly annoyed with performance problems on my laptop, so
> I'm wondering whether this is having any impact.
> 
> This may be considered "trivial" or expected behavior, I'd just like to
> understand it a bit.

I'm continuing to see this problem.  I find that when my system is very sluggish, if I check total IO, those three processes are at the top of the list, and this is when I'm not doing anything directly with Cygwin.  At this point, if I kill my Emacs, rxvt, and X server, my performance improves considerably.


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