summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--ev.pod5
1 files changed, 3 insertions, 2 deletions
diff --git a/ev.pod b/ev.pod
index 69ab7ae..2f8e4d4 100644
--- a/ev.pod
+++ b/ev.pod
@@ -465,8 +465,9 @@ epoll scales either O(1) or O(active_fds).
The epoll mechanism deserves honorable mention as the most misdesigned
of the more advanced event mechanisms: mere annoyances include silently
dropping file descriptors, requiring a system call per change per file
-descriptor (and unnecessary guessing of parameters), problems with dup and
-so on. The biggest issue is fork races, however - if a program forks then
+descriptor (and unnecessary guessing of parameters), problems with dup,
+returning before the timeout value requiring additional iterations and so
+on. The biggest issue is fork races, however - if a program forks then
I<both> parent and child process have to recreate the epoll set, which can
take considerable time (one syscall per file descriptor) and is of course
hard to detect.