Re: Call for testers with NVMe

Abdelkader Boudih wrote on Wed, Sep 02, 2026 at 10:41:25AM +0100: 
> Hi all,
> 
> I am about to land the D59156 stack in about 24 hours: https://reviews.freebsd.org/D59156
> 
> It is a stack of 6 commits, D59151 --> D59156.
> 
> This stack allows NVMe drives to run at full speed and use all available lanes, instead of being quirked to use only one.

Here are my benchmarks.  Machines are Thinkpad T14 AMD gen 1 with 48
GB RAM and 1 TB NVMe WD black sn850x.

sn850x 1TB on -current ufs: main-n287387-7aa34e12c9e1 Jul 12, 2026`
         ---Sequential Output----- ---Input---- ------Random-- -----Random----
         ---Block---- ---Rewrite-- ---Block---- ---ro Seeks--- -Seeks rewrite-
    MB    M/sec %CPU    M/sec %CPU   M/sec %CPU      /sec  %CPU     /sec  %CPU
 65536   780.7  33.8   779.4  38.2   2301.4  53.6  73650.7  32.1 30248.5  25.3
cseekbench: 126.585791 usec/access 0.030 GB/sec
main-n288812-799061fc769c Sep 3:
    MB    M/sec %CPU    M/sec %CPU   M/sec %CPU      /sec  %CPU     /sec  %CPU
 65536  1150.6  49.2   776.9  40.5   2229.2  60.5  86489.4  37.8 33537.9  28.0
cseekbench: 127.185498 usec/access 0.030 GB/sec

Linux 6.17.0-rc2 ext4fs:
         ---Sequential Output----- ---Input---- ------Random-- -----Random----
         ---Block---- ---Rewrite-- ---Block---- ---ro Seeks--- -Seeks rewrite-
    MB    M/sec %CPU    M/sec %CPU   M/sec %CPU      /sec  %CPU     /sec  %CPU
 65536  2693.9  95.4   714.3  37.7   2786.7  63.0  44818.0  30.1 26286.2  23.5
    MB    M/sec %CPU    M/sec %CPU   M/sec %CPU      /sec  %CPU     /sec  %CPU
 65536  1630.2  96.7   628.4  56.6   2520.4  71.7  41362.8  49.8 24476.6  36.8
cseekbench: 87.998063 usec/access 0.043 GB/sec
Linux grisu 6.8.0-137-generic:
    MB    M/sec %CPU    M/sec %CPU   M/sec %CPU      /sec  %CPU     /sec  %CPU
 65536  1133.0 100.4   742.4  80.7   1831.7  99.0  39877.3  46.4 24268.6  40.4
cseekbench: 118.671478 usec/access 0.032 GB/sec
Linux grisu 7.2.3:
    MB    M/sec %CPU    M/sec %CPU   M/sec %CPU      /sec  %CPU     /sec  %CPU
 65536  1562.6  97.5   617.6  57.9   2466.8  74.2  41675.5  50.3 23832.1  39.2
cseekbench: 87.090687 usec/access 0.044 GB/sec


Benchmarks are here:
https://github.com/cracauer/bench-disk-bonnie (pre-GPL fork of bonnie)
https://github.com/cracauer/cseekbench

Martin
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Martin Cracauer <cracauer@cons.org>   http://www.cons.org/cracauer/