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From Vasanth Mathivanan <vasant...@evolutiondigital.com>
Subject Re: Traffic server suddenly drop the packets and crashed
Date Sat, 17 Nov 2018 02:48:37 GMT
@Alan that plugin is enabled but that config file created as empty there is no parameters mentioned.

@Leif Collapsed forwarding  enabled in remap config .Do you have new version of ATS  for red
hat 6 (el6) ? If you have could you pls share ?

@susan Ok I will change the local port range .i checked while running the TIME_WAIT connections
are more than 12000

__Vasanth
Sent from my iPhone

On 17-Nov-2018, at 6:31 AM, Leif Hedstrom <zwoop@apache.org<mailto:zwoop@apache.org>>
wrote:

Yes, I’d highly recommend against using this plugin. Not only is it broken in many ways,
it’s no longer supported in new versions of ATS. And, it really doesn’t do you much good
anyways, I’d look at the collapsed forwarding plugin(s) instead.

Cheers,

— Leif

On Nov 17, 2018, at 1:01 AM, Alan Carroll <solidwallofcode@oath.com<mailto:solidwallofcode@oath.com>>
wrote:

Looks like a problem with the "stale-while-revalidate" plugin. I know that's been problematic.
I'm not sure what the current state is.

On Fri, Nov 16, 2018 at 8:43 AM Vasanth Mathivanan <vasanth.m@evolutiondigital.com<mailto:vasanth.m@evolutiondigital.com>>
wrote:
Yes , its generating core dump  file in traffic server root path and we are using ATS.6.2
in centos 6.5.

traffic.out logs

“ATAL: InkAPI.cc:1879<http://inkapi.cc:1879>: failed assert `sdk_sanity_check_mbuffer(bufp)
== TS_SUCCESS`
traffic_server: using root directory '/opt/trafficserver'
traffic_server: received signal 6 (Aborted)
traffic_server - STACK TRACE:
/opt/trafficserver/bin/traffic_server(_Z19crash_logger_invokeiP7siginfoPv+0x8e)[0x4ac5ee]
/lib64/libpthread.so.0[0x3030e0f7e0]
/lib64/libc.so.6(gsignal+0x35)[0x3030a32495]
/lib64/libc.so.6(abort+0x175)[0x3030a33c75]
/opt/trafficserver/lib/libtsutil.so.6(+0x28228)[0x2b5cb60dc228]
/opt/trafficserver/lib/libtsutil.so.6(+0x282bc)[0x2b5cb60dc2bc]
/opt/trafficserver/lib/libtsutil.so.6(+0x26595)[0x2b5cb60da595]
/opt/trafficserver/bin/traffic_server(TSHandleMLocRelease+0x3a)[0x4c33ca]
/opt/trafficserver/libexec/trafficserver/stale_while_revalidate.so(+0x38c9)[0x2b5e9eaa48c9]
/opt/trafficserver/bin/traffic_server(_ZN15INKContInternal12handle_eventEiPv+0xdb)[0x4c12ab]
/opt/trafficserver/bin/traffic_server(_ZN6HttpSM17state_api_calloutEiPv+0x1b7)[0x5ac967]
/opt/trafficserver/bin/traffic_server(_ZN6HttpSM14set_next_stateEv+0x65b)[0x5b226b]
/opt/trafficserver/bin/traffic_server(_ZN6HttpSM22state_cache_open_writeEiPv+0x20e)[0x5a3cde]
/opt/trafficserver/bin/traffic_server(_ZN6HttpSM12main_handlerEiPv+0xca)[0x5b3f3a]
/opt/trafficserver/bin/traffic_server(_ZN11HttpCacheSM22state_cache_open_writeEiPv+0x281)[0x58a481]
/opt/trafficserver/bin/traffic_server(_ZN7EThread13process_eventEP5Eventi+0x120)[0x766f00]
/opt/trafficserver/bin/traffic_server(_ZN7EThread7executeEv+0x811)[0x767bd1]
/opt/trafficserver/bin/traffic_server[0x76698a]
/lib64/libpthread.so.0[0x3030e07aa1]
/lib64/libc.so.6(clone+0x6d)[0x3030ae8bdd]”

No I did not set ephemeral ports .

Had default values already .

net.ipv4.ip_local_port_range = 32768     60999

net.ipv4.ip_local_reserved_ports =                    ###this one is empty

So its set by manually .

net.ipv4.ip_local_reserved_ports = 30000-31000

Is this ok ? .


__Vasanth
Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10

From: Susan Hinrichs<mailto:shinrich@oath.com>
Sent: Friday, November 16, 2018 7:55 PM
To: users@trafficserver.apache.org<mailto:users@trafficserver.apache.org>
Subject: Re: Traffic server suddenly drop the packets and crashed

Are you exhausting ephemeral ports?  What is the output of  "ss -s" on your Traffic Server
machine? That is quite easy exhaust all of the ephemeral ports for a single load testing client
machine between active and time-wait connections.

Is Traffic Server generating a core or a stack trace?  What version of Traffic Server?

On Fri, Nov 16, 2018 at 1:42 AM Vasanth Mathivanan <vasanth.m@evolutiondigital.com<mailto:vasanth.m@evolutiondigital.com>>
wrote:
Hi ,

We are testing 1000 client access one by one load test after  700 clients dropping the packets
like “connection timeout” or “Connection reset by peer ” errors .

Ram and Cpus resources are everything is fine .Ethernet speed also 20gb/s both client  and
traffic server  . Origin server has 2gb/s speed between ATS and Origin server .While running
700 requests in origin server content will be  receiving speed less than 10Mb/s then traffic
server and client getting more than 1Gb/s speed .

We are also monitoring that resources everything running fine but crashed the traffic server
after 700 requests  .

Note: We are created Java player , We will give the no of  requests its call the particular
URL based on given requests .

__Vasanth

Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10



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