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https://issues.apache.org/jira/browse/TS-4244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15173184#comment-15173184
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James Peach commented on TS-4244:
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These are all cache misses. You can use the {{xdebug}} plugin and standard HTTP
caching headers to figure out why. Also take a look at
https://docs.trafficserver.apache.org/en/latest/admin-guide/configuration/cache-basics.en.html
> ATS have performance problem！
> ------------------------------
>
> Key: TS-4244
> URL: https://issues.apache.org/jira/browse/TS-4244
> Project: Traffic Server
> Issue Type: Bug
> Reporter: gehaijiang
>
> press ats meet performance problem！
> Why are some requests are processed to 50ms.
> 01/Mar/2016:11:23:47 +0800] 1 10.17.21.79 TCP_MISS/200 377 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
> [01/Mar/2016:11:23:47 +0800] 1 10.17.21.79 TCP_MISS/200 378 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
> [01/Mar/2016:11:23:47 +0800] 1 10.17.21.79 TCP_MISS/200 378 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
> [01/Mar/2016:11:23:47 +0800] 1 10.17.21.79 TCP_MISS/200 377 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
> [01/Mar/2016:11:23:47 +0800] 51 10.17.21.79 TCP_MISS/200 378 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
> [01/Mar/2016:11:23:47 +0800] 1 10.17.21.79 TCP_MISS/200 378 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
> [01/Mar/2016:11:23:47 +0800] 51 10.17.21.79 TCP_MISS/200 377 GET
> http://127.0.0.1/time.php - DIRECT/127.0.0.1 text/html
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