On 09 Feb 2022, at 17:43, Yann Ylavic <ylavic....@gmail.com> wrote: > So ab is (appropriately?) reporting errors for kept-alive connections > that had to be shutdown earlier than KeepAliveTimeout, although I > suspect that it would report the same after the KeepAliveTimeout.
ab has a code path that checks for this case and ignores the closed connection, but the test for this was based on whether the current connection had keepalive headers - which it could never be, because, the connection closed before the headers arrived. I added a check as to whether the connection had been kept alive in the past, and now the errors are all gone. Switching from MacOS to Rawhide (on a very low powered server that is designed to save electricity), httpd with your PR ticks along nicely at 10 000 concurrent requests. Will try some more testing on a Linux VM on my Macbook Pro, it should be quicker. [minfrin@kingdom httpd-trunk]$ /tmp/httpd-trunk/bin/ab -R 10 -n 4096000 -c 10000 https://localhost/index.html This is ApacheBench, Version 2.3 <$Revision: 1897912 $> 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) ^C Server Software: Apache/2.5.1-dev Server Hostname: localhost Server Port: 443 SSL/TLS Protocol: TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256 Server Temp Key: X25519 253 bits TLS Server Name: localhost Document Path: /index.html Document Length: 191 bytes Concurrency Level: 10000 Concurrency achieved: 10000 Rampup delay: 10 [ms] Time taken for tests: 391.854 seconds Complete requests: 136274 Failed requests: 0 Total transferred: 58427992 bytes HTML transferred: 26074174 bytes Requests per second: 347.77 [#/sec] (mean) Time per request: 28754.873 [ms] (mean) Time per request: 2.875 [ms] (mean, across all concurrent requests) Transfer rate: 145.61 [Kbytes/sec] received Connection Times (ms) min mean[+/-sd] median max Connect: 16 15427 5534.2 16315 33304 Processing: 5 8640 2503.2 9722 11456 Waiting: 1 4313 1306.0 4890 6407 Total: 21 24067 7782.9 26160 41561 Percentage of the requests served within a certain time (ms) 50% 26160 66% 26394 75% 26633 80% 31010 90% 31586 95% 31837 98% 32071 99% 32326 100% 41561 (longest request) Regards, Graham —
