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> 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: 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:






















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 ? .



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From: Susan Hinrichs
Sent: Friday, November 16, 2018 7:55 PM
To: 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> 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 .




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