| From: | Thomas Munro <tmunro(at)postgresql(dot)org> |
|---|---|
| To: | pgsql-committers(at)lists(dot)postgresql(dot)org |
| Subject: | pgsql: Use signalfd(2) for epoll latches. |
| Date: | 2021-03-01 01:26:45 |
| Message-ID: | E1lGXKf-0007dp-JK@gemulon.postgresql.org |
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| Thread: | |
| Lists: | pgsql-committers |
Use signalfd(2) for epoll latches.
Cut down on system calls and other overheads by reading from a signalfd
instead of using a signal handler and self-pipe. Affects Linux sytems,
and possibly others including illumos that implement the Linux epoll and
signalfd interfaces.
Reviewed-by: Andres Freund <andres(at)anarazel(dot)de>
Discussion: https://postgr.es/m/CA+hUKGJjxPDpzBE0a3hyUywBvaZuC89yx3jK9RFZgfv_KHU7gg@mail.gmail.com
Branch
------
master
Details
-------
https://git.postgresql.org/pg/commitdiff/6a2a70a02018d6362f9841cc2f499cc45405e86b
Modified Files
--------------
src/backend/libpq/pqsignal.c | 4 +-
src/backend/storage/ipc/latch.c | 159 ++++++++++++++++++++++++++------------
src/backend/utils/init/miscinit.c | 10 +--
3 files changed, 118 insertions(+), 55 deletions(-)
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