[
https://issues.apache.org/jira/browse/TS-4924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=15569110#comment-15569110
]
James Peach commented on TS-4924:
-
See {{HttpTransact::initialize_state_variables_from_request}} where we always
disable keepalive for internal requests. This means that any protocol plugin
will have keepalive disabled. {{wrk}} is extremely aggressive about using
keepalive (always sends all requests on keepalive), so the non-protocol plugin
results are unrealistically high.
> Protocol plugin performance penalty
> ---
>
> Key: TS-4924
> URL: https://issues.apache.org/jira/browse/TS-4924
> Project: Traffic Server
> Issue Type: Bug
> Components: Performance, Plugins
>Reporter: James Peach
> Fix For: sometime
>
>
> It looks like protocol plugins take a significant performance penalty
> compared to doing the same work in the code.
> *Configuratation:*
> {noformat}
> [root@fedora-23 ~]# cat /opt/ats/etc/trafficserver/remap.config
> map http://generator.jpeach.org/ http://127.0.0.1/ \
> @plugin=generator.so
> [root@fedora-23 ~]# cat /opt/ats/etc/trafficserver/plugin.config
> passthru.so
> [root@fedora-23 ~]# tail /opt/ats/etc/trafficserver/records.config
> ...
> CONFIG config.plugin.passthru.server_ports STRING 9090
> {noformat}
> *http_load:*
> {noformat}
> http://generator.jpeach.org/cache/1024/1934f6c8-2cd6-46ea-9077-0532528fb1c9
> [vagrant@fedora-23 ~]$ http_load -proxy 127.0.0.1:8080 -parallel 50 -seconds
> 20 -keep_alive 4 url.lst
> {noformat}
> We are using a generator URL of 1K that gets served from cache.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
