netdev - Re: [PATCH net-next 0/7] net: reduce tcp_memory

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Message-Id: <165490621420.10458.10325984202458401848.git-patchwork-notify@kernel.org>
Date:   Sat, 11 Jun 2022 00:10:14 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        netdev@...r.kernel.org, soheil@...gle.com, weiwan@...gle.com,
        shakeelb@...gle.com, ncardwell@...gle.com, edumazet@...gle.com
Subject: Re: [PATCH net-next 0/7] net: reduce tcp_memory_allocated inflation

Hello:

This series was applied to netdev/net-next.git (master)
by Jakub Kicinski <kuba@...nel.org>:

On Wed,  8 Jun 2022 23:34:05 -0700 you wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> Hosts with a lot of sockets tend to hit so called TCP memory pressure,
> leading to very bad TCP performance and/or OOM.
> 
> The problem is that some TCP sockets can hold up to 2MB of 'forward
> allocations' in their per-socket cache (sk->sk_forward_alloc),
> and there is no mechanism to make them relinquish their share
> under mem pressure.
> Only under some potentially rare events their share is reclaimed,
> one socket at a time.
> 
> [...]

Here is the summary with links:
  - [net-next,1/7] Revert "net: set SK_MEM_QUANTUM to 4096"
    https://git.kernel.org/netdev/net-next/c/e70f3c701276
  - [net-next,2/7] net: remove SK_MEM_QUANTUM and SK_MEM_QUANTUM_SHIFT
    https://git.kernel.org/netdev/net-next/c/100fdd1faf50
  - [net-next,3/7] net: add per_cpu_fw_alloc field to struct proto
    https://git.kernel.org/netdev/net-next/c/0defbb0af775
  - [net-next,4/7] net: implement per-cpu reserves for memory_allocated
    https://git.kernel.org/netdev/net-next/c/3cd3399dd7a8
  - [net-next,5/7] net: fix sk_wmem_schedule() and sk_rmem_schedule() errors
    https://git.kernel.org/netdev/net-next/c/7c80b038d23e
  - [net-next,6/7] net: keep sk->sk_forward_alloc as small as possible
    https://git.kernel.org/netdev/net-next/c/4890b686f408
  - [net-next,7/7] net: unexport __sk_mem_{raise|reduce}_allocated
    https://git.kernel.org/netdev/net-next/c/0f2c2693988a

You are awesome, thank you!
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