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bug#6443: 23.2; Many files take 6-15 seconds to open after upgrade to 23
bug#6443: 23.2; Many files take 6-15 seconds to open after upgrade to 23.2 on WinXP
Thu, 17 Jun 2010 07:04:10 -0600
Thunderbird 18.104.22.168 (Macintosh/20100228)
Keith M Swartz wrote:
Upgraded from emacs 22.3 to 23.2.1 on Windows XP SP 3, using pre-built
binaries from ftp.gnu.org. I've found that emacs is frequently
unresponsive, would hang for several seconds during routine operations,
including auto-save, etc. Did some searching, and found that default
setting for w32-get-true-file-attributes had changed, so I reverted that
back to nil -- this helped.
Now, at best, opening files takes about 1-2 seconds, which is
acceptable. But sometimes, it still takes 6-8 seconds to open files.
I've confirmed there is no CPU usage during this time, and Process
Monitor does not show enough specific information to determine whether
it's an I/O call it's hanging on, or what I/O call that is. Ctrl-G is
unresponsive and doesn't act until after control resumes. I can
reproduce this even with no startup files, and it happens just as often.
It APPEARED for a while that turning off font-lock-mode globally helped,
but I think that may be a red herring. When turning it off, the first
few file opens would usually go quickly, but after that, opening a file
from a new location would bring back the 6-8 second hang. Not EVERY file
opens this slowly, but enough do that it definitely interrupts the work
All of my operations are happening locally, and not on a network drive.
I have a network drive defined, but even when the drive is not mounted,
the hangs still occur.
I have AV software installed, but can't disable it (due to corporate
settings) -- however, I haven't seen this problem manifest in any other
program, so I'm hesitant to blame that.
I am working on testing with another machine to see if I can reproduce,
but advice on key differences to look for would be helpful.
Try this on each machine: (elp-instrument-file "/files\\.elc\\'")
Then visit a file, and M-x elp-results.
You'll need the attached helper function.
Denver, Colorado, USA