Date: Fri, 22 Oct 2021 15:31:58 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 258204] Extremely poor performance copying directory with lot of small files on nvme Message-ID: <bug-258204-227-HD25K7COPG@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-258204-227@https.bugs.freebsd.org/bugzilla/> References: <bug-258204-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D258204 --- Comment #3 from Ali Abdallah <ali.abdallah@suse.com> --- Some nvme perf test measurements=20 # nvmecontrol perftest -n 1 -o read -s 4096 -t 30 nvme0ns1 Threads: 1 Size: 4096 READ Time: 30 IO/s: 34515 MB/s: 134 # nvmecontrol perftest -n 2 -o read -s 4096 -t 30 nvme0ns1 Threads: 2 Size: 4096 READ Time: 30 IO/s: 69473 MB/s: 271 diskinfo -tv /dev/nvd0p4.eli=20 /dev/nda0p4.eli 4096 # sectorsize 478888849408 # mediasize in bytes (446G) 116916223 # mediasize in sectors 0 # stripesize 0 # stripeoffset 7277 # Cylinders according to firmware. 255 # Heads according to firmware. 63 # Sectors according to firmware. UMIS LENSE40512GMSP34MESTB3A # Disk descr. SS0L25153X3RC03Y11N2 # Disk ident. nvme0 # Attachment Yes # TRIM/UNMAP support 0 # Rotation rate in RPM Seek times: Full stroke: 250 iter in 0.059140 sec =3D 0.237 msec Half stroke: 250 iter in 0.038418 sec =3D 0.154 msec Quarter stroke: 500 iter in 0.075839 sec =3D 0.152 msec Short forward: 400 iter in 0.059095 sec =3D 0.148 msec Short backward: 400 iter in 0.076297 sec =3D 0.191 msec Seq outer: 2048 iter in 0.220371 sec =3D 0.108 msec Seq inner: 2048 iter in 0.312280 sec =3D 0.152 msec Transfer rates: outside: 102400 kbytes in 1.339011 sec =3D 76474 kbytes/= sec middle: 102400 kbytes in 1.125152 sec =3D 91010 kbytes/= sec inside: 102400 kbytes in 1.394730 sec =3D 73419 kbytes/= sec The values look really bad for a NVME device. --=20 You are receiving this mail because: You are the assignee for the bug.=
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