linux-kernel - Re: [PATCH V2,net] net: mana: Fix perf regression: remove rx_cqes, tx

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Message-ID: <20230525202557.5a5f020b@kernel.org>
Date:   Thu, 25 May 2023 20:25:57 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Haiyang Zhang <haiyangz@...rosoft.com>
Cc:     linux-hyperv@...r.kernel.org, netdev@...r.kernel.org,
        decui@...rosoft.com, kys@...rosoft.com, paulros@...rosoft.com,
        olaf@...fle.de, vkuznets@...hat.com, davem@...emloft.net,
        wei.liu@...nel.org, edumazet@...gle.com, pabeni@...hat.com,
        leon@...nel.org, longli@...rosoft.com, ssengar@...ux.microsoft.com,
        linux-rdma@...r.kernel.org, daniel@...earbox.net,
        john.fastabend@...il.com, bpf@...r.kernel.org, ast@...nel.org,
        sharmaajay@...rosoft.com, hawk@...nel.org, tglx@...utronix.de,
        shradhagupta@...ux.microsoft.com, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH V2,net] net: mana: Fix perf regression: remove rx_cqes,
 tx_cqes counters

On Thu, 25 May 2023 07:46:30 -0700 Haiyang Zhang wrote:
> lot caching and memory overhead, hence perf regression.

Horatiu's ask for more details was perfectly reasonable.
Provide more details to give the distros and users an
idea of the order of magnitude of the problem. Example
workload and relative perf hit, anything.

Please do not repost within 24 hours:
https://www.kernel.org/doc/html/next/process/maintainer-netdev.html
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