On 07 Feb 2022, at 18:13, Yann Ylavic <ylavic....@gmail.com> wrote: > All green: https://app.travis-ci.com/github/apache/httpd/builds/246021482 > <https://app.travis-ci.com/github/apache/httpd/builds/246021482> \o/
I’ve been load testing these changes with the fixed trunk version of ab, most recently modified at have a ramp delay to stop the OS kicking in and protecting itself from denial of service. The most concurrent requests I can get out of MacOS appears to be roughly 2000 concurrent requests before “connection reset by peer” kills the test. One small detail I have uncovered is that a small percentage of requests fail, caused by httpd gracefully shutting the connection down before returning a response. Stopping ab in a debugger confirms that openssl returns SSL_ERROR_ZERO_RETURN on read, which is what openssl does when the other side gracefully triggers close notify. Is this something anyone has seen before while I go digging? Little-Net:~ root# ulimit -n 10240; /tmp/httpd-trunk/bin/ab -k -R 20 -n 4096000 -c 4096 https://localhost:9443/blah.txt This is ApacheBench, Version 2.3 <$Revision: 1897866 $> Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://web.archive.org/web/20000304112933/http://www.zeustech.net/ Licensed to The Apache Software Foundation, http://www.apache.org/ Benchmarking localhost (be patient) Completed 409600 requests Test aborted after 10 failures apr_socket_connect(): Connection reset by peer (54) Total of 498014 requests completed Server Software: Apache/2.5.1-dev Server Hostname: localhost Server Port: 9443 SSL/TLS Protocol: TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256 Server Temp Key: X25519 253 bits TLS Server Name: localhost Document Path: /blah.txt Document Length: 9 bytes Concurrency Level: 4096 Concurrency achieved: 2028 Rampup delay: 20 [ms] Time taken for tests: 40.629 seconds Complete requests: 498014 Failed requests: 13102 (Connect: 1, Receive: 0, Length: 13101, Exceptions: 0) Keep-Alive requests: 482963 Total transferred: 135219777 bytes HTML transferred: 4364253 bytes Requests per second: 12257.69 [#/sec] (mean) Time per request: 334.158 [ms] (mean) Time per request: 0.082 [ms] (mean, across all concurrent requests) Transfer rate: 3250.18 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 0 10 60.8 0 847 Processing: 0 73 70.5 54 611 Waiting: 0 70 69.9 52 487 Total: 0 82 96.4 56 1192 Percentage of the requests served within a certain time (ms) 50% 56 66% 91 75% 109 80% 125 90% 171 95% 224 98% 410 99% 485 100% 1192 (longest request) Regards, Graham —
