FAQ

Well, this machine is 11 years old now.
This explains the large amount of CPU time.
Quad 900MHz UltraSparc III processors are more than
enough to handle a simple filesystem.
The server runs fine, is patched up to date. The UFS filesystem that was
used is actually the root filesystem and it is a metadevice mirror of
the two internal disks.
A simple mirror is slow.
I don't agree.

jupiter-sparc-SunOS5.10 # pwd
/usr/local/src
jupiter-sparc-SunOS5.10 # which mkfile
/usr/sbin/mkfile

jupiter-sparc-SunOS5.10 # ptime /usr/sbin/mkfile 1024m one_gig.dat

real 30.874
user 0.206
sys 5.574
jupiter-sparc-SunOS5.10 # ls -l
total 3035664
-rw-r--r-- 1 root root 479733760 Aug 9 15:44 linux-3.5.1.tar
-rw------T 1 root root 1073741824 Aug 13 20:00 one_gig.dat
jupiter-sparc-SunOS5.10 # rm one_gig.dat
jupiter-sparc-SunOS5.10 #


Meanwhile in another xterm I ran iostat :

$ iostat -xc -d ssd0 ssd2 5
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.2 4.8 1.5 46.2 0.0 0.1 34.2 0 3 1 2 0 97
ssd2 0.1 4.6 1.2 46.1 0.0 0.1 34.7 0 3
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 9.2 0.0 5.0 0.0 0.2 20.7 0 5 0 1 0 99
ssd2 0.0 6.4 0.0 3.6 0.0 0.1 15.5 0 3
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 1 0 99
ssd2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.4 111.4 2.0 12546.4 6.3 4.3 94.9 25 36 1 2 0 97
ssd2 0.0 104.6 0.0 12476.0 5.9 4.1 96.1 24 31
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.8 326.4 6.4 37426.6 28.6 13.1 127.4 80 100 0 6 0 93
ssd2 0.0 317.8 0.0 37423.8 26.4 12.5 122.6 76 91
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.2 322.6 1.6 35021.9 23.2 12.5 110.7 73 98 0 17 0 83
ssd2 1.2 312.8 9.6 35104.7 23.0 12.5 113.1 73 92
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 2.2 294.8 20.8 30385.4 16.8 11.9 96.8 64 98 0 11 0 89
ssd2 1.4 284.8 11.2 30418.4 16.1 11.2 95.4 63 90
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 314.0 0.0 33055.0 20.3 12.2 103.6 69 98 0 5 0 95
ssd2 1.8 300.2 14.4 32987.6 19.1 11.7 102.0 67 89
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.4 312.8 3.2 33398.0 26.7 12.8 126.0 75 98 0 6 0 94
ssd2 1.6 304.4 12.8 33424.0 24.0 11.9 117.1 71 89
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 2.4 278.6 19.2 28227.5 24.8 10.8 126.9 63 94 1 7 0 92
ssd2 1.0 259.2 8.0 28187.7 21.3 9.6 118.6 57 75
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 9.4 0.0 27.6 0.0 0.2 25.1 0 6 0 1 0 99
ssd2 0.0 6.6 0.0 26.2 0.0 0.1 15.3 0 3
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 18.0 0.0 62.3 0.0 0.4 21.2 0 11 0 1 0 98
ssd2 0.2 13.2 0.2 59.9 0.0 0.2 16.8 0 7
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.4 29.0 3.2 307.1 0.0 0.8 26.2 0 15 0 2 0 98
ssd2 0.2 29.0 1.6 306.7 0.0 0.8 29.1 0 15
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 0.8 0.0 0.4 0.0 0.0 10.0 0 1 0 5 0 95
ssd2 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0
extended device statistics cpu
device r/s w/s kr/s kw/s wait actv svc_t %w %b us sy wt id
ssd0 0.0 1.8 0.0 1.2 0.0 0.0 7.8 0 1 0 1 0 99
ssd2 0.0 0.6 0.0 0.6 0.0 0.0 7.1 0 0
^C$
$

bulk throughput would be 1024m/30.874sec =

jupiter-sparc-SunOS5.10 # dc
9k
1024 30.874 / p
33.167066139

Not bad.
However, a 2300 GB FCAL drive should be faster.
Probably, but not much.
But... did you turn on logging?
ufs logging ? Yes. Always. However that would be the same with the gtar and star tests also.

Dennis

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