Willy Tarreau 6c11bd2f89 OPTIM: raw-sock: don't speculate after a short read if polling is enabled ... This is the reimplementation of the "done" action : when we experience a short read, we're almost certain that we've exhausted the system's buffers and that we'll meet an EAGAIN if we attempt to read again. If the FD is not yet polled, the stream interface already takes care of stopping the speculative read. When the FD is already being polled, we have two options : - either we're running from a level-triggered poller, in which case we'd rather report that we've reached the end so that we don't speculate over the poller and let it report next time data are available ; - or we're running from an edge-triggered poller in which case we have no choice and have to see the EAGAIN to re-enable events. At the moment we don't have any edge-triggered poller, so it's desirable to avoid speculative I/O that we know will fail. Note that this must not be ported to SSL since SSL hides the real readiness of the file descriptor. Thanks to this change, we observe no EAGAIN anymore during keep-alive transfers, and failed recvfrom() are reduced by half in http-server-close mode (the client-facing side is always being polled and the second recv can be avoided). Doing so results in about 5% performance increase in keep-alive mode. Similarly, we used to have up to about 1.6% of EAGAIN on accept() (1/maxaccept), and these have completely disappeared under high loads.		2014-01-26 00:42:32 +01:00
..
acl.h	MINOR: acl/pattern: use types different from int to clarify who does what.	2013-12-02 23:31:33 +01:00
arg.h	MAJOR: sample: maintain a per-proxy list of the fetch args to resolve	2013-04-03 02:13:02 +02:00
auth.h	MINOR: acl/pattern: use types different from int to clarify who does what.	2013-12-02 23:31:33 +01:00
backend.h
channel.h	BUG/MAJOR: http: always ensure response buffer has some room for a response	2013-06-08 13:14:17 +02:00
checks.h	MINOR: checks: use an inline function for health_adjust()	2013-12-31 23:47:37 +01:00
compression.h	MINOR: compression: CPU usage limit	2012-11-21 02:15:16 +01:00
connection.h	CLEANUP: connection: use conn_xprt_ready() instead of checking the flag	2014-01-26 00:42:31 +01:00
cttproxy.h
dumpstats.h	Revert "MEDIUM: stats: add support for HTTP keep-alive on the stats page"	2013-12-29 00:43:40 +01:00
fd.h	OPTIM: raw-sock: don't speculate after a short read if polling is enabled	2014-01-26 00:42:32 +01:00
freq_ctr.h
frontend.h
hdr_idx.h
lb_chash.h
lb_fas.h
lb_fwlc.h
lb_fwrr.h
lb_map.h
listener.h	CLEANUP: fix missing include <string.h> in proto/listener.h	2013-06-14 19:52:17 +02:00
log.h	MINOR: log: indicate it when some unreliable sample fetches are logged	2013-04-03 02:12:56 +02:00
map.h	MINOR: map: export parse output sample functions	2013-12-12 15:44:05 +01:00
obj_type.h	MINOR: obj: introduce a new type appctx	2013-12-09 15:40:22 +01:00
pattern.h	MINOR: pattern: move functions for grouping pat_match_* and pat_parse_* and add documentation.	2014-01-21 22:14:21 +01:00
payload.h	MINOR: payload: split smp_fetch_rdp_cookie()	2013-08-01 21:17:13 +02:00
peers.h
pipe.h
port_range.h
proto_http.h	MINOR: http: switch the http state to an enum	2013-12-09 16:06:22 +01:00
proto_tcp.h	BUG/MINOR: config: report the correct track-sc number in tcp-rules	2013-12-02 23:31:32 +01:00
proto_uxst.h
protocol.h
proxy.h
queue.h
raw_sock.h
sample.h	MINOR: sample: make sample_parse_expr() use memprintf() to report parse errors	2013-12-12 23:16:54 +01:00
server.h	BUG/MINOR: stats: correctly report throttle rate of low weight servers	2013-12-16 18:04:57 +01:00
session.h	MINOR: session: add a simple function to retrieve a session from a task	2013-12-09 15:40:21 +01:00
shctx.h	MINOR: ssl: Setting global tune.ssl.cachesize value to 0 disables SSL session cache.	2012-12-28 14:48:13 +01:00
signal.h
ssl_sock.h	MEDIUM: log: report SSL ciphers and version in logs using logformat %sslc/%sslv	2012-10-12 20:48:51 +02:00
stick_table.h	MEDIUM: stick-tables: flush old entries upon soft-stop	2013-09-04 17:54:01 +02:00
stream_interface.h	MEDIUM: stream-int: make si_connect() return an established state when possible	2013-12-31 23:32:12 +01:00
task.h
template.h