From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: olivier.matz@6wind.com
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] prefetch second cacheline of mbufs on alloc
Date: Mon, 20 Jul 2015 03:00:59 +0200 [thread overview]
Message-ID: <6143149.O6nc0QL3DF@xps13> (raw)
In-Reply-To: <1431386118-2811-1-git-send-email-emmericp@net.in.tum.de>
Please Olivier,
What is the status of this patch?
2015-05-12 01:15, Paul Emmerich:
> this improves the throughput of a simple tx-only application by 11% in
> the full-featured ixgbe tx path and by 14% in the simple tx path.
> ---
> lib/librte_mbuf/rte_mbuf.h | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/lib/librte_mbuf/rte_mbuf.h b/lib/librte_mbuf/rte_mbuf.h
> index ab6de67..f6895b4 100644
> --- a/lib/librte_mbuf/rte_mbuf.h
> +++ b/lib/librte_mbuf/rte_mbuf.h
> @@ -538,6 +538,7 @@ static inline struct rte_mbuf *__rte_mbuf_raw_alloc(struct rte_mempool *mp)
> if (rte_mempool_get(mp, &mb) < 0)
> return NULL;
> m = (struct rte_mbuf *)mb;
> + rte_prefetch0(&m->cacheline1);
> RTE_MBUF_ASSERT(rte_mbuf_refcnt_read(m) == 0);
> rte_mbuf_refcnt_set(m, 1);
> return (m);
>
next prev parent reply other threads:[~2015-07-20 1:02 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-11 23:15 Paul Emmerich
2015-07-20 1:00 ` Thomas Monjalon [this message]
2015-07-20 8:02 ` Olivier MATZ
2017-02-15 8:44 ` Thomas Monjalon
2017-02-16 15:16 ` Olivier Matz
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