From: Thomas Gleixner <tglx@linutronix.de>
To: Jakub Kicinski <kuba@kernel.org>
Cc: Eric Dumazet <edumazet@google.com>,
LKML <linux-kernel@vger.kernel.org>,
Linus Torvalds <torvalds@linuxfoundation.org>,
x86@kernel.org, Wangyang Guo <wangyang.guo@intel.com>,
Arjan van De Ven <arjan@linux.intel.com>,
"David S. Miller" <davem@davemloft.net>,
Paolo Abeni <pabeni@redhat.com>,
netdev@vger.kernel.org, Will Deacon <will@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Boqun Feng <boqun.feng@gmail.com>,
Mark Rutland <mark.rutland@arm.com>,
Marc Zyngier <maz@kernel.org>
Subject: Re: [patch 0/3] net, refcount: Address dst_entry reference count scalability issues
Date: Wed, 01 Mar 2023 11:40:11 +0100 [thread overview]
Message-ID: <87sfeolppw.ffs@tglx> (raw)
In-Reply-To: <20230228191705.3bc8bed6@kernel.org>
On Tue, Feb 28 2023 at 19:17, Jakub Kicinski wrote:
> FWIW looks good to me, especially the refcount part.
> We do see 10% of jitter in microbenchmarks due to random cache
> effects, so forgive the questioning.
Yes, those things are hard to measure.
> But again, the refcount seems like an obvious win to my noob eyes.
>
> While I have you it would be remiss of me not to mention my ksoftirq
> change which makes a large difference in production workloads:
> https://lore.kernel.org/all/20221222221244.1290833-3-kuba@kernel.org/
Let me find this again.
> Is Peter's "rework" of softirq going in for 6.3?
Not that I'm aware of. That had a few loose ends and got lost in space
AFAICT.
Thanks,
tglx
prev parent reply other threads:[~2023-03-01 10:40 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-28 14:33 [patch 0/3] net, refcount: Address dst_entry reference count scalability issues Thomas Gleixner
2023-02-28 14:33 ` [patch 1/3] net: dst: Prevent false sharing vs. dst_entry::__refcnt Thomas Gleixner
2023-02-28 15:17 ` Eric Dumazet
2023-02-28 21:31 ` Thomas Gleixner
2023-03-01 23:12 ` Thomas Gleixner
2023-02-28 14:33 ` [patch 2/3] atomics: Provide rcuref - scalable reference counting Thomas Gleixner
2023-03-01 0:42 ` Linus Torvalds
2023-03-01 1:07 ` Linus Torvalds
2023-03-01 11:09 ` Thomas Gleixner
2023-03-02 1:05 ` Thomas Gleixner
2023-03-02 1:29 ` Randy Dunlap
2023-03-02 19:36 ` Linus Torvalds
2023-02-28 14:33 ` [patch 3/3] net: dst: Switch to rcuref_t " Thomas Gleixner
2023-02-28 15:07 ` [patch 0/3] net, refcount: Address dst_entry reference count scalability issues Eric Dumazet
2023-02-28 16:38 ` Thomas Gleixner
2023-02-28 16:59 ` Eric Dumazet
2023-03-01 1:00 ` Thomas Gleixner
2023-03-01 3:17 ` Jakub Kicinski
2023-03-01 10:40 ` Thomas Gleixner [this message]
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