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epoll-lt : a very scalable event polling mechanism
The epoll mechanism is a powerful replacement for poll() and select() because
it is not sensible to the number of file-descriptors. It can transparently
support tens of thousands of FDs without any measurable slow down. It has been
merged into 2.6, but this patch allows demanding applications to achieve very
high performance on 2.4 too.
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| Description: | a very scalable event polling mechanism |
| Author(s): | Davide Libenzi |
| See also: | poll-optim-jiffies |
| Abstract: | The epoll mechanism is a powerful replacement for poll() and select() because
it is not sensible to the number of file-descriptors. It can transparently
support tens of thousands of FDs without any measurable slow down. It has been
merged into 2.6, but this patch allows demanding applications to achieve very
high performance on 2.4 too.
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Notes
This patch only implements the level-triggered (LT) mode. The edge-triggered
mode (ET) is only available in 2.6 kernels. Anyway, most applications only
use the LT mode.
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(C) Willy Tarreau - 2008-06-01