diff options
| author | Davi Arnaut <davi@haxent.com.br> | 2007-05-23 13:58:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-23 20:14:14 -0700 |
| commit | b3762bfc8d046342db664d855f8f875e8a4c2ca1 (patch) | |
| tree | fefa7bf1aecbdf458f31d4896498282f5ee9d1e7 /fs/char_dev.c | |
| parent | 0532cb427ed2a5957d39e98cb5a4741b68fc6102 (diff) | |
signalfd: retrieve multiple signals with one read() call
Gathering signals in bulk enables server applications to drain a signal
queue (almost full of realtime signals) more efficiently by reducing the
syscall and file look-up overhead.
Very similar to the sigtimedwait4() call described by Niels Provos, Chuck
Lever, and Stephen Tweedie in a paper entitled "Analyzing the Overload
Behavior of a Simple Web Server". The paper lists more details and
advantages.
Signed-off-by: Davi E. M. Arnaut <davi@haxent.com.br>
Acked-by: Davide Libenzi <davidel@xmailserver.org>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/char_dev.c')
0 files changed, 0 insertions, 0 deletions