Mercurial > hg > nginx-quic
annotate auto/summary @ 8398:82e174e47663
Changed keepalive_requests default to 1000 (ticket #2155).
It turns out no browsers implement HTTP/2 GOAWAY handling properly, and
large enough number of resources on a page results in failures to load
some resources. In particular, Chrome seems to experience errors if
loading of all resources requires more than 1 connection (while it
is usually able to retry requests at least once, even with 2 connections
there are occasional failures for some reason), Safari if loading requires
more than 3 connections, and Firefox if loading requires more than 10
connections (can be configured with network.http.request.max-attempts,
defaults to 10).
It does not seem to be possible to resolve this on nginx side, even strict
limiting of maximum concurrency does not help, and loading issues seems to
be triggered by merely queueing of a request for a particular connection.
The only available mitigation seems to use higher keepalive_requests value.
The new default is 1000 and matches previously used default for
http2_max_requests. It is expected to be enough for 99.98% of the pages
(https://httparchive.org/reports/state-of-the-web?start=latest#reqTotal)
even in Chrome.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Thu, 08 Apr 2021 00:16:30 +0300 |
parents | 9eefb38f0005 |
children | 0b5f12d5c531 |
rev | line source |
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1 |
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2 # Copyright (C) Igor Sysoev |
4412 | 3 # Copyright (C) Nginx, Inc. |
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6 echo |
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7 echo "Configuration summary" |
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9 |
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10 if [ $USE_THREADS = YES ]; then |
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11 echo " + using threads" |
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12 fi |
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13 |
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14 if [ $USE_PCRE = DISABLED ]; then |
501 | 15 echo " + PCRE library is disabled" |
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17 else |
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18 case $PCRE in |
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19 YES) echo " + using system PCRE library" ;; |
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20 NONE) echo " + PCRE library is not used" ;; |
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21 *) echo " + using PCRE library: $PCRE" ;; |
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22 esac |
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23 fi |
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24 |
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25 case $OPENSSL in |
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26 YES) echo " + using system OpenSSL library" ;; |
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27 NONE) echo " + OpenSSL library is not used" ;; |
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28 *) echo " + using OpenSSL library: $OPENSSL" ;; |
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29 esac |
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31 case $ZLIB in |
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32 YES) echo " + using system zlib library" ;; |
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33 NONE) echo " + zlib library is not used" ;; |
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34 *) echo " + using zlib library: $ZLIB" ;; |
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35 esac |
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37 case $NGX_LIBATOMIC in |
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38 YES) echo " + using system libatomic_ops library" ;; |
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39 NO) ;; # not used |
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40 *) echo " + using libatomic_ops library: $NGX_LIBATOMIC" ;; |
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41 esac |
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42 |
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43 echo |
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45 |
479 | 46 cat << END |
493 | 47 nginx path prefix: "$NGX_PREFIX" |
48 nginx binary file: "$NGX_SBIN_PATH" | |
6383 | 49 nginx modules path: "$NGX_MODULES_PATH" |
1352 | 50 nginx configuration prefix: "$NGX_CONF_PREFIX" |
493 | 51 nginx configuration file: "$NGX_CONF_PATH" |
52 nginx pid file: "$NGX_PID_PATH" | |
479 | 53 END |
54 | |
469 | 55 if test -n "$NGX_ERROR_LOG_PATH"; then |
493 | 56 echo " nginx error log file: \"$NGX_ERROR_LOG_PATH\"" |
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57 else |
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58 echo " nginx logs errors to stderr" |
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59 fi |
479 | 60 |
61 cat << END | |
493 | 62 nginx http access log file: "$NGX_HTTP_LOG_PATH" |
63 nginx http client request body temporary files: "$NGX_HTTP_CLIENT_TEMP_PATH" | |
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64 END |
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65 |
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66 if [ $HTTP_PROXY = YES ]; then |
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67 echo " nginx http proxy temporary files: \"$NGX_HTTP_PROXY_TEMP_PATH\"" |
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68 fi |
479 | 69 |
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70 if [ $HTTP_FASTCGI = YES ]; then |
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71 echo " nginx http fastcgi temporary files: \"$NGX_HTTP_FASTCGI_TEMP_PATH\"" |
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72 fi |
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73 |
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74 if [ $HTTP_UWSGI = YES ]; then |
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75 echo " nginx http uwsgi temporary files: \"$NGX_HTTP_UWSGI_TEMP_PATH\"" |
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76 fi |
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77 |
3637 | 78 if [ $HTTP_SCGI = YES ]; then |
79 echo " nginx http scgi temporary files: \"$NGX_HTTP_SCGI_TEMP_PATH\"" | |
80 fi | |
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81 |
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82 echo "$NGX_POST_CONF_MSG" |