From: Jakub Kicinski <kuba@kernel.org>
To: Dipayaan Roy <dipayanroy@linux.microsoft.com>
Cc: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, andrew+netdev@lunn.ch, davem@davemloft.net,
edumazet@google.com, pabeni@redhat.com, leon@kernel.org,
longli@microsoft.com, kotaranov@microsoft.com, horms@kernel.org,
shradhagupta@linux.microsoft.com, ssengar@linux.microsoft.com,
ernis@linux.microsoft.com, shirazsaleem@microsoft.com,
linux-hyperv@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org,
stephen@networkplumber.org, jacob.e.keller@intel.com,
leitao@debian.org, kees@kernel.org, john.fastabend@gmail.com,
hawk@kernel.org, bpf@vger.kernel.org, daniel@iogearbox.net,
ast@kernel.org, sdf@fomichev.me, dipayanroy@microsoft.com
Subject: Re: [PATCH net-next v6 0/2] net: mana: add ethtool private flag for full-page RX buffers
Date: Thu, 16 Apr 2026 08:31:46 -0700 [thread overview]
Message-ID: <20260416083146.0bb94d2b@kernel.org> (raw)
In-Reply-To: <ad5kuCZz+gR1TlSh@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net>
On Tue, 14 Apr 2026 09:00:56 -0700 Dipayaan Roy wrote:
> I still see roughly a 5% overhead from the atomic refcount operation
> itself, but on that platform there is no throughput drop when using
> page fragments versus full-page mode.
That seems to contradict your claim that it's a problem with a specific
platform.. Since we're in the merge window I asked David Wei to try to
experiment with disabling page fragmentation on the ARM64 platforms we
have at Meta. If it repros we should use the generic rx-buf-len
ringparam because more NICs may want to implement this strategy.
prev parent reply other threads:[~2026-04-16 15:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-07 19:59 [PATCH net-next v6 0/2] net: mana: add ethtool private flag for full-page RX buffers Dipayaan Roy
2026-04-07 19:59 ` [PATCH net-next v6 1/2] net: mana: refactor mana_get_strings() and mana_get_sset_count() to use switch Dipayaan Roy
2026-04-07 19:59 ` [PATCH net-next v6 2/2] net: mana: force full-page RX buffers via ethtool private flag Dipayaan Roy
2026-04-10 1:35 ` [PATCH net-next v6 0/2] net: mana: add ethtool private flag for full-page RX buffers Jakub Kicinski
2026-04-12 19:59 ` Jakub Kicinski
2026-04-14 16:00 ` Dipayaan Roy
2026-04-16 15:31 ` Jakub Kicinski [this message]
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