Hi Denis, On May 26 19:21, Denis Excoffier wrote: > Hello, > > I tried the snapshot dated 2016-05-20. Okay, this one was not announced. > > Functionally it seems ok. But some simple tasks now take a lot of time > compared to the last non-snapshot version (2.5.1): > > 1) searching into a small text file > A simple text file (created with "seq 10000") takes several seconds to load > in vim. Lookup for the string "9999" then takes 5 seconds. Previously, > searching "9999999" in a bigger file (created with "seq 10000000") used to > take 2 seconds only.
I can't reproduce this.
> Note: The "seq 10000000 > myfile" itself makes no notable difference.
>
> 2) ls in a large directory
> My /usr/bin contains 8098 files. Previously, a plain "ls -F" in this folder
> took some initialization time (2 seconds), then the display of the files was
> quite instantaneous. With the new snapshot, the initialization (stat and
> sort) takes more or less the same time, but afterwards, each single line is
> displayed at a visible pace, a clear screen is executed after each set of ~24
> lines and the whole directory is listed in about 10 minutes.
I can't reproduce this either.
> Note: "ls | wc -l" itself makes no notable difference.
>
> This occurs under X-Windows (xterm) or not (login window). Under x86, Windows
> 7. I switched back to 2.5.1.
>
> This message just in case it could be useful.
The problem is, there's no change at all in the snapshot which would
explain a slowdown of such basic functions:
- Assorted select(2) improvements:
commits a23e6a35d896a075640db714b28ce74bb6b8d7ff
e5665d8c930485d5ac6d8913573e27b9e5043d92
- There's a change to the sched_* functions, which is used only rarely
and which doesn't introduce any waits or loops.
commits 450f557feee5dd4900e3fd4f16cbb6cabe89fbc6
4b51e4c142445c133d6075d2a68ce98e8ec6058b
- Fix a size restriction to 2 GB areas
commit 0aa738220bb9dea2ad479e484560767b36701947
- Replace toupper with explicit tests of character values in the rare
case TZ isn't set
commit 030d86d04dbd6ae878ff894256c5a465890d5970
And that's it. All other changes since 2.5.1 only affect non-Cygwin
targets in newlib and libgloss.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Maintainer cygwin AT cygwin DOT com
Red Hat
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