lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <CA+q+rD3Z9JEW=4hyAutTxa9yk3mtR-yakUUU4o3sKrfMQkfh6w@mail.gmail.com>
Date:	Wed, 10 Sep 2014 12:56:04 -0500
From:	Robert Engels <rengels@...ionscity.com>
To:	netdev <netdev@...r.kernel.org>
Subject: rtt vs. rcv_rtt

When using 'ss', both rtt, and rcv_rtt are reported.

My understanding is that rcv_rtt is an estimate of the receivers rtt
?? Is this true?

My assumption is that differences in rtt vs. rcv_rtt would be due to
asymmetric networking connections ???

Here is a sample 'ss' output:

cubic wscale:2,9 rto:437 rtt:101.625/84 ato:40 cwnd:10 ssthresh:15
send 991.9Kbps rcv_rtt:18291 rcv_space:151142

Can someone explain why the rcv_rtt would be so much higher than the rtt?

Is it that the client is not reading the data fast enough? Other reasons?

Thanks so much for your help.

Robert Engels
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ