[
https://issues.apache.org/jira/browse/TS-505?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Leif Hedstrom reassigned TS-505:
--------------------------------
Assignee: Leif Hedstrom
> Worse performance when Origin server sends Connection: keep-alive
> -----------------------------------------------------------------
>
> Key: TS-505
> URL: https://issues.apache.org/jira/browse/TS-505
> Project: Traffic Server
> Issue Type: Bug
> Components: Network
> Reporter: Leif Hedstrom
> Assignee: Leif Hedstrom
> Priority: Critical
> Fix For: 2.1.6
>
>
> I have a test setup using lighttpd (stock config, but with the port changed
> to port 82, and logging disabled). I've created a small file (42 bytes) in
> /var/www/lighttpd/cl-test.html.
> I'm running Apache TS with a stock config ("gmake install") with the
> following configuration changes:
> records.config:
> ---------------
> CONFIG proxy.config.http.server_port INT 80
> CONFIG proxy.config.http.cache.required_headers INT 2
> CONFIG proxy.config.log2.logging_enabled INT 0
> remap.config:
> -------------
> map http://loki.ogre.com/lighttpd/ http://localhost:82/
> I'm "benchmarking" this using "ab" from a second host, running a command like
> ab -c 20 -n 10000 http://loki.ogre.com/lighttpd/cl-test.html
> Test 1: I disable Keep-Alive in lighttpd, adding a configuration like this to
> /etc/lighttpd/lighttpd.conf:
> server.max-keep-alive-requests = 0
> Test results are
> Requests per second: 9056.01 [#/sec] (mean)
> Time per request: 2.208 [ms] (mean)
> Time per request: 0.110 [ms] (mean, across all concurrent requests)
> Test 2: I enable Keep-Alive in lighttpd, with
> server.max-keep-alive-requests = 1000000
> Test results are:
> Requests per second: 4456.33 [#/sec] (mean)
> Time per request: 4.488 [ms] (mean)
> Time per request: 0.224 [ms] (mean, across all concurrent requests)
> This might not seem like a huge difference, but why would it be serving 2x
> fewer QPS and 2x the latency with keep-alive to the origin server? If
> anything, I'd expect it to be faster with keep-alive, right ? Shouldn't that
> be noticeably less work?
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
