linux-kernel - Re: [ata] 0568e61225: stress-ng.copy-file.ops_per

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Message-ID: <d1b1d434-059d-4d76-5fc6-092ab9ba6e16@huawei.com>
Date:   Thu, 18 Aug 2022 10:28:30 +0100
From:   John Garry <john.garry@...wei.com>
To:     Oliver Sang <oliver.sang@...el.com>
CC:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Christoph Hellwig <hch@....de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        <linux-ide@...r.kernel.org>, <lkp@...ts.01.org>, <lkp@...el.com>,
        <ying.huang@...el.com>, <feng.tang@...el.com>,
        <zhengjun.xing@...ux.intel.com>, <fengwei.yin@...el.com>
Subject: Re: [ata] 0568e61225: stress-ng.copy-file.ops_per_sec -15.0%
 regression

On 18/08/2022 03:06, Oliver Sang wrote:

Hi Oliver,

>>> did I do the right thing?
>> Sorry but I was not really interested in 4cbfca5f77 and I see where that
>> build error is coming, but don't be concerned with it. However, for
>> avoidance of doubt, if you have results for vanilla v6.0-rc1 then that would
>> be appreciated.
> for v6.0-rc1, it's still 512/512
> 
>> I will also send a separate patch for testing if you don't mind.
> sure! we are very glad that we could help.

As you probably saw, I sent "[RFT PATCH] ata: libata: Set __ATA_BASE_SHT 
max_sectors" for testing on top of v6.0-rc1, and I hope that then we can 
get same performance as v5.19

Thanks,
John