netdev - Re: [PATCH net-next 1/3] net: increase optmem

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Message-ID: <657b09ab4f6ef_14c73d294b9@willemb.c.googlers.com.notmuch>
Date: Thu, 14 Dec 2023 08:56:59 -0500
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: Eric Dumazet <edumazet@...gle.com>, 
 "David S . Miller" <davem@...emloft.net>, 
 Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>
Cc: Neal Cardwell <ncardwell@...gle.com>, 
 Willem de Bruijn <willemb@...gle.com>, 
 Mina Almasry <almasrymina@...gle.com>, 
 Chao Wu <wwchao@...gle.com>, 
 Pavel Begunkov <asml.silence@...il.com>, 
 netdev@...r.kernel.org, 
 eric.dumazet@...il.com, 
 Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net-next 1/3] net: increase optmem_max default value

Eric Dumazet wrote:
> For many years, /proc/sys/net/core/optmem_max default value
> on a 64bit kernel has been 20 KB.
> 
> Regular usage of TCP tx zerocopy needs a bit more.
> 
> Google has used 128KB as the default value for 7 years without
> any problem.
> 
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>

Reviewed-by: Willem de Bruijn <willemb@...gle.com>