linux-kernel - RE: Re: [PATCH v14 0/3] scsi: ufs: Add Host Performance Booster Support

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Message-ID: <20201218021613epcms2p7ef4b3b095f9be9e7e1f8c74e1dc6af44@epcms2p7>
Date:   Fri, 18 Dec 2020 11:16:13 +0900
From:   Daejun Park <daejun7.park@...sung.com>
To:     Bart Van Assche <bvanassche@....org>,
        Daejun Park <daejun7.park@...sung.com>,
        Greg KH <gregkh@...uxfoundation.org>
CC:     "avri.altman@....com" <avri.altman@....com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "asutoshd@...eaurora.org" <asutoshd@...eaurora.org>,
        "stanley.chu@...iatek.com" <stanley.chu@...iatek.com>,
        "cang@...eaurora.org" <cang@...eaurora.org>,
        "huobean@...il.com" <huobean@...il.com>,
        ALIM AKHTAR <alim.akhtar@...sung.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Sung-Jun Park <sungjun07.park@...sung.com>,
        yongmyung lee <ymhungry.lee@...sung.com>,
        Jinyoung CHOI <j-young.choi@...sung.com>,
        Adel Choi <adel.choi@...sung.com>,
        BoRam Shin <boram.shin@...sung.com>,
        SEUNGUK SHIN <seunguk.shin@...sung.com>
Subject: RE: Re: [PATCH v14 0/3] scsi: ufs: Add Host Performance Booster
 Support

On 12/17/20 5:05 PM, Daejun Park wrote:
> > Here is my iozone script:
> > iozone -r 4k -+n -i2 -ecI -t 16 -l 16 -u 16 
> > -s $IO_RANGE/16 -F mnt/tmp_1 mnt/tmp_2 mnt/tmp_3 mnt/tmp_4 
> > mnt/tmp_5 mnt/tmp_6 mnt/tmp_7 mnt/tmp_8 mnt/tmp_9 mnt/tmp_10 mnt/tmp_11 
> > mnt/tmp_12 mnt/tmp_13 mnt/tmp_14 mnt/tmp_15 mnt/tmp_16
> > 
> > Result:
> > +----------+--------+---------+
> > | IO range | HPB on | HPB off |
> > +----------+--------+---------+
> > |   1 GB   | 294.8  | 300.87  |
> > |   4 GB   | 293.51 | 179.35  |
> > |   8 GB   | 294.85 | 162.52  |
> > |  16 GB   | 293.45 | 156.26  |
> > |  32 GB   | 277.4  | 153.25  |
> > +----------+--------+---------+
> 
> Hi Daejun,
> 
> What are the units of the numbers in columns 2 and 3?
> 
> Thanks,
> 
> Bart.
> 
I forgot to add units, it is MB/s.

Thanks
Daejun