netdev - Re: [PATCH 0/2] Tracepoint for tcp retransmission

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5f654c7d-f18e-4d70-8830-a3e31b8f5f4a@tahiti.vyatta.com>
Date:	Fri, 16 Dec 2011 16:17:17 -0800 (PST)
From:	Stephen Hemminger <stephen.hemminger@...tta.com>
To:	Satoru Moriya <satoru.moriya@....com>
Cc:	nhorman@...driver.com, davem@...emloft.net, tgraf@...radead.org,
	Seiji Aguchi <seiji.aguchi@....com>,
	dle-develop@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [PATCH 0/2] Tracepoint for tcp retransmission


> Sometimes network packets are dropped for some reason. In enterprise
> systems which require strict RAS functionality, we must know the
> reason why it happened and explain it to our customers even if using
> TCP. When we investigate the incidents, at first we try to find out
> whether the problem is in the server(kernel, application) or else
> (router, hub etc). And next we try to find out which layer
> (application/middleware/kernel(IP/TCP/UDP/..)etc.) the problem
> occurs.

I feel sorry for you, your users don't understand TCP. TCP intentionally induces loss
to measure capacity. This is one of the fundamental principles of
loss based congestion control.
--
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