Mercurial > hg > nginx-quic
annotate conf/fastcgi_params @ 7281:bd6563e81cea
Limit req: improved handling of negative times.
Negative times can appear since workers only update time on an event
loop iteration start. If a worker was blocked for a long time during
an event loop iteration, it is possible that another worker already
updated the time stored in the node. As such, time since last update
of the node (ms) will be negative.
Previous code used ngx_abs(ms) in the calculations. That is, negative
times were effectively treated as positive ones. As a result, it was
not possible to maintain high request rates, where the same node can be
updated multiple times from during an event loop iteration.
In particular, this affected setups with many SSL handshakes, see
http://mailman.nginx.org/pipermail/nginx/2018-May/056291.html.
Fix is to only update the last update time stored in the node if the
new time is larger than previously stored one. If a future time is
stored in the node, we preserve this time as is.
To prevent breaking things on platforms without monotonic time available
if system time is updated backwards, a safety limit of 60 seconds is
used. If the time stored in the node is more than 60 seconds in the future,
we assume that the time was changed backwards and update lr->last
to the current time.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Wed, 30 May 2018 15:40:34 +0300 |
parents | 62869a9b2e7d |
children |
rev | line source |
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537 | 1 |
2 fastcgi_param QUERY_STRING $query_string; | |
3 fastcgi_param REQUEST_METHOD $request_method; | |
4 fastcgi_param CONTENT_TYPE $content_type; | |
5 fastcgi_param CONTENT_LENGTH $content_length; | |
6 | |
7 fastcgi_param SCRIPT_NAME $fastcgi_script_name; | |
8 fastcgi_param REQUEST_URI $request_uri; | |
9 fastcgi_param DOCUMENT_URI $document_uri; | |
10 fastcgi_param DOCUMENT_ROOT $document_root; | |
11 fastcgi_param SERVER_PROTOCOL $server_protocol; | |
6168
62869a9b2e7d
Added the REQUEST_SCHEME parameter.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4333
diff
changeset
|
12 fastcgi_param REQUEST_SCHEME $scheme; |
4333
352a7b025f2e
Added HTTPS param with Apache-like behaviour to fastcgi/scgi/uwsgi_params (fixes #38).
Valentin Bartenev <vbart@nginx.com>
parents:
1330
diff
changeset
|
13 fastcgi_param HTTPS $https if_not_empty; |
537 | 14 |
15 fastcgi_param GATEWAY_INTERFACE CGI/1.1; | |
1330 | 16 fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; |
537 | 17 |
18 fastcgi_param REMOTE_ADDR $remote_addr; | |
19 fastcgi_param REMOTE_PORT $remote_port; | |
20 fastcgi_param SERVER_ADDR $server_addr; | |
21 fastcgi_param SERVER_PORT $server_port; | |
22 fastcgi_param SERVER_NAME $server_name; | |
23 | |
24 # PHP only, required if PHP was built with --enable-force-cgi-redirect | |
25 fastcgi_param REDIRECT_STATUS 200; |