netdev - Re: BUG: sk_backlog.len can overestimate

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Message-ID: <f572890a-ca31-e01a-e370-c8b3e3b51f5b@gmail.com>
Date:   Tue, 1 Oct 2019 13:53:09 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     John Ousterhout <ouster@...stanford.edu>
Cc:     netdev@...r.kernel.org
Subject: Re: BUG: sk_backlog.len can overestimate

On 10/1/19 1:45 PM, John Ousterhout wrote:

> 
> But this isn't really about socket resource limits (though that is
> conflated in the implementation); it's about limiting the time spent
> in a single call to __release_sock, no?

The proxy used is memory usage, not time usage.

cond_resched() or a preemptible kernel makes anything based on time flaky,
you probably do not want to play with a time limit...