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Re: Cygwin Emacs and two other Cygwin processes seem to do a lot of "other" I/O while seemingly idle
- From: Václav Zeman <vhaisman at gmail dot com>
- To: cygwin at cygwin dot com
- Date: Fri, 01 Nov 2013 21:28:12 +0100
- Subject: Re: Cygwin Emacs and two other Cygwin processes seem to do a lot of "other" I/O while seemingly idle
- Authentication-results: sourceware.org; auth=none
- References: <B8D164BED956C5439875951895CB4B22114D4BAC at WABOTH9MSGUSR8C dot ITServices dot sbc dot com> <B8D164BED956C5439875951895CB4B221876C0F2 at WABOTH9MSGUSR8C dot ITServices dot sbc dot com>
On 11/01/2013 07:15 PM, KARR, DAVID wrote:
>> -----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.
You could try running the emacs under strace to see what is going on in it.
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