linux-kernel - Re: [PATCH net-next] net: hns: optimize XGE capability by reducing cpu usage

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Message-ID: <56667F7C.9020009@huawei.com>
Date:	Tue, 8 Dec 2015 14:58:04 +0800
From:	"Yankejian (Hackim Yim)" <yankejian@...wei.com>
To:	"Du, Fan" <fan.du@...el.com>, <davem@...emloft.net>,
	<lisheng011@...wei.com>, <lipeng321@...wei.com>,
	<salil.mehta@...wei.com>, <huangdaode@...ilicon.com>,
	<xuwei5@...ilicon.com>, <liguozhu@...wei.com>
CC:	<haifeng.wei@...wei.com>, <yisen.zhuang@...wei.com>,
	<linuxarm@...wei.com>, <netdev@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net-next] net: hns: optimize XGE capability by reducing
 cpu usage



On 2015/12/8 14:30, Du, Fan wrote:
>
>
> On 2015/12/8 14:22, Yankejian (Hackim Yim) wrote:
>>
>> On 2015/12/7 16:58, Du, Fan wrote:
>>> >
>>> >
>>> >On 2015/12/5 15:32, yankejian wrote:
>>>> >>here is the patch raising the performance of XGE by:
>>>> >>1)changes the way page management method for enet momery, and
>>>> >>2)reduces the count of rmb, and
>>>> >>3)adds Memory prefetching
>>> >
>>> >Any numbers on how much it boost performance?
>>> >
>> it is almost the same as 82599.
>
> I mean how much it improves performance *BEFORE* and *AFTER* this patch
> for Huawei XGE chip, because the commit log states it "raising the performance",
> but did give numbers of the testing.
>
> .
>
Hi Du Fan,
the bandwidth's raising is not obviously, but the cpu usage degracing up to 50%


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