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From Vasanth Mathivanan <vasant...@evolutiondigital.com>
Subject RE: Traffic server suddenly drop the packets and crashed
Date Fri, 16 Nov 2018 14:39:08 GMT
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: 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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