From: Divy Le Ray <divy@chelsio•com>
To: Herbert Xu <herbert@gondor•apana.org.au>
Cc: netdev@vger•kernel.org
Subject: Re: cxgb3: Replace LRO with GRO
Date: Thu, 22 Jan 2009 01:42:22 -0800 [thread overview]
Message-ID: <49783F7E.6000202@chelsio.com> (raw)
In-Reply-To: <20090121082937.GA1116@gondor.apana.org.au>
Herbert Xu wrote:
> there is a lot
> of microoptimisations that we can perform to minimise the cost
> and also reduce the cost of some existing checks.
>
> Please try the following patch (compile tested only since I'm
> at LCA) and let me know if it improves things.
>
I'm now getting about an average 5.7Gbs, oprofile typically showing:
37.294500 copy_user_generic_unrolled vmlinux
8.733800 process_responses cxgb3.ko
6.123700 refill_fl cxgb3.ko
5.006900 put_page vmlinux
3.400700 napi_fraginfo_skb vmlinux
2.484600 tcp_gro_receive vmlinux
2.308900 inet_gro_receive vmlinux
2.196000 free_hot_cold_page vmlinux
2.032900 skb_gro_header vmlinux
1.970100 get_page_from_freelist vmlinux
1.869700 skb_copy_datagram_iovec vmlinux
1.380300 dev_gro_receive vmlinux
1.242300 tcp_recvmsg vmlinux
1.079200 irq_entries_start vmlinux
1.003900 get_pageblock_flags_group vmlinux
0.991300 skb_gro_receive vmlinux
0.878400 _raw_spin_lock vmlinux
0.878400 memcpy vmlinux
0.840800 kfree vmlinux
0.828200 list_del vmlinux
Cheers,
Divy
next prev parent reply other threads:[~2009-01-22 9:43 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-20 10:14 cxgb3: Replace LRO with GRO Divy Le Ray
2009-01-21 8:29 ` Herbert Xu
2009-01-22 9:42 ` Divy Le Ray [this message]
2009-02-16 3:36 ` Herbert Xu
2009-02-16 3:47 ` Divy Le Ray
2009-03-13 7:28 ` Divy Le Ray
2009-04-13 15:24 ` Herbert Xu
-- strict thread matches above, loose matches on Subject: below --
2009-01-15 21:14 Divy Le Ray
2009-01-15 23:58 ` Herbert Xu
2009-01-16 8:06 ` Divy Le Ray
2009-01-16 8:56 ` Herbert Xu
2009-01-16 11:12 ` Divy Le Ray
2009-01-16 23:58 ` Herbert Xu
2009-01-17 5:08 ` Herbert Xu
2009-01-17 11:11 ` Divy Le Ray
2009-01-17 13:08 ` Herbert Xu
2009-01-18 20:33 ` Divy Le Ray
2009-01-18 22:50 ` Herbert Xu
2009-01-20 1:03 ` David Miller
2009-01-20 2:03 ` David Miller
2009-01-20 5:24 ` Herbert Xu
2009-01-20 10:04 ` Divy Le Ray
2009-01-13 9:26 [1/2] e1000e: Invoke VLAN GRO handler Herbert Xu
2009-01-15 6:59 ` cxgb3: Replace LRO with GRO Herbert Xu
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