From: Florian Westphal <fw-HFFVJYpyMKqzQB+pC5nmwQ@public.gmane.org>
To: Thomas Graf <tgraf-G/eBtMaohhA@public.gmane.org>
Cc: dev-yBygre7rU0TnMu66kgdUjQ@public.gmane.org,
fleitner-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
bhutchings-s/n/eUQHGBpZroRs9YW3xA@public.gmane.org,
davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org
Subject: Re: [net-next 3/7] openvswitch: Enable memory mapped Netlink i/o
Date: Sat, 30 Nov 2013 13:35:49 +0100 [thread overview]
Message-ID: <20131130123549.GH2067@breakpoint.cc> (raw)
In-Reply-To: <9f7f05a726935c434d43d92c2908a997c403725b.1385813891.git.tgraf-G/eBtMaohhA@public.gmane.org>
Thomas Graf <tgraf-G/eBtMaohhA@public.gmane.org> wrote:
> Benchmark
> * pktgen -> ovs internal port
> * 5M pkts, 5M flows
> * 4 threads, 8 cores
>
> Before:
> Result: OK: 67418743(c67108212+d310530) usec, 5000000 (9000byte,0frags)
> 74163pps 5339Mb/sec (5339736000bps) errors: 0
[..]
> After:
> Result: OK: 24229690(c24127165+d102524) usec, 5000000 (9000byte,0frags)
> 206358pps 14857Mb/sec (14857776000bps) errors: 0
I'm curious. Is the 'old' value with skb_zerocopy() or without?
Does ovs-vswitchd 'read-access' the entire packet or just e.g. the
header?
I ask because in netfilter nfqueue tests I could not see any difference
between 'zerocopy' vs. mmap in the receive-path tests I made a while
back.
[ I have no objections to your patch, of course ].
next prev parent reply other threads:[~2013-11-30 12:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-30 12:21 [PATCH net-next 0/8 v8] Open vSwitch upcall optimiziations Thomas Graf
2013-11-30 12:21 ` [net-next 1/7] genl: Add genlmsg_new_unicast() for unicast message allocation Thomas Graf
[not found] ` <cover.1385813891.git.tgraf-G/eBtMaohhA@public.gmane.org>
2013-11-30 12:21 ` [net-next 2/7] netlink: Avoid netlink mmap alloc if msg size exceeds frame size Thomas Graf
2013-11-30 12:21 ` [net-next 3/7] openvswitch: Enable memory mapped Netlink i/o Thomas Graf
[not found] ` <9f7f05a726935c434d43d92c2908a997c403725b.1385813891.git.tgraf-G/eBtMaohhA@public.gmane.org>
2013-11-30 12:35 ` Florian Westphal [this message]
2013-11-30 14:04 ` Thomas Graf
2013-12-04 5:45 ` Jesse Gross
2013-11-30 12:21 ` [net-next 4/7] net: Export skb_zerocopy() to zerocopy from one skb to another Thomas Graf
2013-11-30 12:21 ` [net-next 5/7] openvswitch: Allow user space to announce ability to accept unaligned Netlink messages Thomas Graf
2013-11-30 12:21 ` [net-next 6/7] openvswitch: Drop user features if old user space attempted to create datapath Thomas Graf
2013-11-30 12:21 ` [net-next 7/7] openvswitch: Use skb_zerocopy() for upcall Thomas Graf
2013-12-04 5:43 ` Jesse Gross
2013-12-05 21:29 ` Thomas Graf
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