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Subject: Re: [PATCHv4 0/3] Fix inode_lock sequence to scale performance of DIO
 mixed R/W workload
To:     Joseph Qi <joseph.qi@linux.alibaba.com>, jack@suse.cz,
        tytso@mit.edu, linux-ext4@vger.kernel.org
Cc:     linux-fsdevel@vger.kernel.org, mbobrowski@mbobrowski.org
References: <20191205064624.13419-1-riteshh@linux.ibm.com>
 <97fe59fa-0161-c035-40d0-3a9770ab426c@linux.alibaba.com>
From:   Ritesh Harjani <riteshh@linux.ibm.com>
Date:   Fri, 6 Dec 2019 14:19:52 +0530
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On 12/6/19 2:16 PM, Joseph Qi wrote:
> Tested with the following case:
> 
> fio -name=parallel_dio_reads_test -filename=/mnt/nvme0n1/testfile \
> -direct=1 -iodepth=1 -thread -rw=randrw -ioengine=psync -bs=$bs \
> -size=20G -numjobs=8 -runtime=600 -group_reporting
> 
> The performance result is the same as reverting parallel dio reads[1]
> or even slightly better in both bandwidth and latency, which is as

That's great!!


> expected.
> 
> So, Tested-by: Joseph Qi <joseph.qi@linux.alibaba.com>

Thanks :)

-ritesh