linux-kernel - Question about the 'bw' field in the fio output

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Message-ID: <CAJNi4rMK6hc6vh8hwU_zb_p2uQn=FLOmAuAJuF1DxMfyG8nixg@mail.gmail.com>
Date:   Thu, 13 Jul 2023 23:43:54 +0800
From:   richard clark <richard.xnu.clark@...il.com>
To:     fio@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Question about the 'bw' field in the fio output

Hi,

I found that sometimes the fio command will have an additional 'bw'
field as below:
...
clat percentiles (usec):
  |  1.00th=[.  51]...
bw (  KiB/s): min=45689, max=49753, per=100.00%, avg=49658.56,
stdev=89.23, samples =5
iops            : min=.....
...

Please there is a line beginning with 'bw (  KiB/s)...', but sometimes
the 'bw' line doesn't show, does anybody know the reasons?

Thanks.