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Posted to issues@trafficserver.apache.org by "Bryan Call (JIRA)" <ji...@apache.org> on 2016/08/17 17:03:20 UTC
[jira] [Updated] (TS-4215) ATS chokes frequently in production host
[ https://issues.apache.org/jira/browse/TS-4215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bryan Call updated TS-4215:
---------------------------
Summary: ATS chokes frequently in production host (was: ATS choke frequently in production host)
> ATS chokes frequently in production host
> ----------------------------------------
>
> Key: TS-4215
> URL: https://issues.apache.org/jira/browse/TS-4215
> Project: Traffic Server
> Issue Type: Bug
> Components: Core
> Affects Versions: 5.3.1
> Reporter: taoyunxing
> Fix For: 7.0.0
>
>
> During this period， I am suffering from great pressures on my job, because ATS chokes frequently in production environment, the QoS is not guaranteed. I try many ats version, such as 5.3.x, 6.0.0, 6.1.1, etc, but all have the same one.
> HardWare：
> CentOS 6.3/6.6/6.7, CPU 8Cores, Memory 64GB, HardDisk: 300GB sys + 24TB data,
> ATS records.config：
> CONFIG proxy.config.cache.min_average_object_size INT 1048576
> CONFIG proxy.config.cache.ram_cache.algorithm INT 1
> CONFIG proxy.config.cache.ram_cache_cutoff INT 4194304
> CONFIG proxy.config.cache.ram_cache.size INT 32G
> Scenario：
> curl -vo /dev/null -x 127.0.0.1:8081 -H 'X-Debug: via,x-cache,x-cache-key,x-milestones' 'http://www.taobao.com/'
> * About to connect() to proxy 127.0.0.1 port 8081 (#0)
> * Trying 127.0.0.1... connected
> * Connected to 127.0.0.1 (127.0.0.1) port 8081 (#0)
> > GET http://www.taobao.com/ HTTP/1.1
> > User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.19.1 Basic ECC zlib/1.2.3 libidn/1.18 libssh2/1.4.2
> > Host: www.taobao.com
> > Accept: */*
> > Proxy-Connection: Keep-Alive
> > X-Debug: via,x-cache,x-cache-key,x-milestones
> >
> % Total % Received % Xferd Average Speed Time Time Time Current
> Dload Upload Total Spent Left Speed
> 0 0 0 0 0 0 0 0 --:--:-- 0:00:15 --:--:-- 0< HTTP/1.1 302 Found
> < Server: ats/1.5.0
> < Date: Thu, 18 Feb 2016 05:53:59 GMT
> < Content-Type: text/html
> < Content-Length: 258
> < Location: https://www.taobao.com/
> < Set-Cookie: thw=cn; Path=/; Domain=.taobao.com; Expires=Fri, 17-Feb-17 05:53:59 GMT;
> < Strict-Transport-Security: max-age=31536000
> < Age: 0
> < Proxy-Connection: keep-alive
> < Via: http/1.1 ltgj51 (ats [uScMsSf pSeN:t cCMi p sS])
> < X-Cache-Key: http://www.taobao.com/
> < X-Cache: miss
> < X-Milestones: DNS-LOOKUP-END=0.000064880, DNS-LOOKUP-BEGIN=0.000064880, CACHE-OPEN-WRITE-END=0.000084858, CACHE-OPEN-WRITE-BEGIN=0.000077224, CACHE-OPEN-READ-END=0.000064880, CACHE-OPEN-READ-BEGIN=0.000029354, SERVER-READ-HEADER-DONE=0.053633813, SERVER-FIRST-READ=0.053633813, SERVER-BEGIN-WRITE=0.000115707, SERVER-CONNECT-END=0.000115707, SERVER-CONNECT=0.000087664, SERVER-FIRST-CONNECT=0.000087664, UA-BEGIN-WRITE=0.053633813, UA-READ-HEADER-DONE=0.000029354, UA-BEGIN=0.000000000
> <
> { [data not shown]
> 129 258 129 258 0 0 17 0 0:00:15 0:00:15 --:--:-- 4777* Connection #0 to host 127.0.0.1 left intact
> * Closing connection #0
> Problem：
> ats may choke for some seconds before the server response returned，ten times maybe occur one time，and I don't know why ?
> here， I use X-Debug plugin to show each milestone(in second) of current http request
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