linux-kernel - Re: [linus:master] [nfs] 49b29a573d: filebench.sum

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Message-ID: <ZrsEaIEbjpT80P9/@xsang-OptiPlex-9020>
Date: Tue, 13 Aug 2024 14:59:52 +0800
From: Oliver Sang <oliver.sang@...el.com>
To: Christoph Hellwig <hch@....de>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
	Anna Schumaker <Anna.Schumaker@...app.com>, Sagi Grimberg <sagi@...mberg.me>,
	<linux-nfs@...r.kernel.org>, <ying.huang@...el.com>, <feng.tang@...el.com>,
	<fengwei.yin@...el.com>, <oliver.sang@...el.com>
Subject: Re: [linus:master] [nfs]  49b29a573d:  filebench.sum_operations/s
 -85.6% regression

hi,  Christoph Hellwig,

On Tue, Aug 13, 2024 at 08:49:55AM +0200, Christoph Hellwig wrote:
> On Tue, Aug 13, 2024 at 02:47:48PM +0800, Oliver Sang wrote:
> > no in our tests, becomes even worse actually. detail data is in [1]
> 
> Thanks.  Do you have a good summary of what operations this counts?

sorry I don't have many details. not sure if https://github.com/filebench/filebench/wiki
is helpful for you?

and a raw data run by this test looks like below

2024-08-13 02:24:56 filebench -f /lkp/benchmarks/filebench/share/filebench/workloads/randomrw.f
Filebench Version 1.5-alpha3
0.000: Allocated 177MB of shared memory
0.001: Random RW Version 3.0 personality successfully loaded
0.001: Populating and pre-allocating filesets
0.001: Removing largefile1 tree (if exists)
0.002: Pre-allocating directories in largefile1 tree
0.119: Pre-allocating files in largefile1 tree
49.469: Waiting for pre-allocation to finish (in case of a parallel pre-allocation)
49.469: Population and pre-allocation of filesets completed
49.469: Starting 1 rand-rw instances
50.472: Running...
110.478: Run took 60 seconds...
110.478: Per-Operation Breakdown
rand-write1          11769ops      196ops/s   1.5mb/s    5.096ms/op [0.002ms - 1567.054ms]
rand-read1           49402ops      823ops/s   6.4mb/s    1.214ms/op [0.001ms - 1567.058ms]
110.478: IO Summary: 61171 ops 1019.414 ops/s 823/196 rd/wr   8.0mb/s 1.961ms/op
110.478: Shutting down processes
2024-08-13 02:26:48 sleep 100
/nfs/sdd1/largefile1
/nfs/sdd1/lost+found
/nfs/sdd1/wait_for_nfs_grace_period
2024-08-13 02:28:28 rm -rf /nfs/sdd1/largefile1 /nfs/sdd1/lost+found /nfs/sdd1/wait_for_nfs_grace_period


our bot parse it as:

{
  "filebench.sum_operations": [
    61171
  ],
  "filebench.sum_operations/s": [
    1019.414
  ],
  "filebench.sum_reads/s": [
    823
  ],
  "filebench.sum_writes/s": [
    196
  ],
  "filebench.sum_bytes_mb/s": [
    8.0
  ],
  "filebench.sum_time_ms/op": [
    1.961
  ]
}