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From: Jiri Slaby <jirislaby@kernel.org>
To: Eric Dumazet <edumazet@google.com>
Cc: "David S . Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	netdev@vger.kernel.org, Soheil Hassas Yeganeh <soheil@google.com>,
	Neal Cardwell <ncardwell@google.com>,
	Yuchung Cheng <ycheng@google.com>,
	eric.dumazet@gmail.com
Subject: Re: [PATCH net-next] tcp: get rid of sysctl_tcp_adv_win_scale
Date: Fri, 3 Nov 2023 11:14:56 +0100	[thread overview]
Message-ID: <28e2bd4a-3233-471c-a1ae-57a445173401@kernel.org> (raw)
In-Reply-To: <CANn89iJOwQUwAVcofW+X_8srFcPnaWKyqOoM005L6Zgh8=OvpA@mail.gmail.com>

On 03. 11. 23, 9:17, Eric Dumazet wrote:
> What happens if you double /proc/sys/net/ipv4/tcp_wmem  and/or
> /proc/sys/net/ipv4/tcp_rmem first value ?
> (4096 -> 8192)

No change:
# cat /proc/sys/net/ipv4/tcp_wmem
8192    16384   4194304


But this:
# cat /proc/sys/net/ipv4/tcp_rmem
8192    16384   4194304

results in test to run 4.7 s, so even 3 more times slower!

thanks,
-- 
js
suse labs


  parent reply	other threads:[~2023-11-03 10:15 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-07-17 15:29 [PATCH net-next] tcp: get rid of sysctl_tcp_adv_win_scale Eric Dumazet
2023-07-17 16:52 ` Soheil Hassas Yeganeh
2023-07-17 17:17   ` Eric Dumazet
2023-07-17 17:20     ` Soheil Hassas Yeganeh
2023-07-19  2:10 ` patchwork-bot+netdevbpf
2023-07-20 15:41 ` Paolo Abeni
2023-07-20 15:50   ` Eric Dumazet
2023-11-03  6:10 ` Jiri Slaby
2023-11-03  6:56   ` Jiri Slaby
2023-11-03  7:07     ` Jiri Slaby
2023-11-03  8:17       ` Eric Dumazet
2023-11-03  9:27         ` Michal Kubecek
2023-11-03  9:53           ` Eric Dumazet
2023-11-03 10:14         ` Jiri Slaby [this message]
2023-11-03 10:27           ` Eric Dumazet
2023-11-03 11:07             ` Jiri Slaby
2024-04-02 15:28 ` shironeko
2024-04-02 15:50   ` Eric Dumazet
2024-04-02 16:23     ` Eric Dumazet
2024-04-02 16:29       ` shironeko
2024-04-06  0:22         ` shironeko
2024-04-06  6:11           ` Eric Dumazet
2024-04-06  7:07             ` Eric Dumazet

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