Ok , so I swaped the DVD drive from the NEC 4571 to the Plextor PX-800A
I did not mesure the time it takes to answer the initial questions of the
install.
>From the point where the installer starts to format the Hard Disk until the
>final reboot,
with the NEC 4571 = 45 minutes.
with the PX-800A = 40 minutes.
This list is fairly representative of the CPU load during the install
Machine is a Shuttle SN25P Barebone.
CPU is Dualcore Athlon 64 4800+ 2.4 Ghz.
Mem is Corsair DDR 400 CAS Latency 2 cycles ( 2x1 GB )
Chipset is Nvidia Nforce4
# mpstat 10 4
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 1680 3 217 1269 369 866 46 18 36 0 3680 12 4 0 83
1 1639 2 467 1105 555 835 25 18 33 0 4410 6 5 0 88
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 3479 2 51 604 322 295 20 17 48 0 2274 8 6 0 86
1 2881 1 116 299 122 254 4 17 33 0 1613 3 5 0 92
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 1430 1 84 1242 399 1020 19 13 25 0 1782 16 4 0 80
1 1513 0 300 1346 995 707 8 12 28 0 3152 4 4 0 92
CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl
0 1901 0 209 1266 350 824 11 14 29 0 2277 12 4 0 85
1 1451 0 469 1412 937 967 10 14 21 0 3500 9 4 0 86
This is the last mean value of I/O load shortly before finish.
compared to the NEC drive ( which had a busy figure of 66%
while the 10.000 rpm disk had a busy figure of 11% )
this is showing a 4% higher utilization of the harddisk.
DVD is c1t0d0
10.000 rpm disk is c2t0d0
# iostat -xne
extended device statistics ---- errors ---
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b s/w h/w trn tot
device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0 fd0
3.6 0.0 21.6 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
ramdisk1
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c0t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 0 0 0 0
c0t0d1
5.0 104.7 23.3 7310.4 13.4 0.1 121.8 1.3 12 15 181 0 0 181
c2t0d0
276.4 0.0 552.9 0.0 0.2 0.5 0.7 2.0 16 54 0 0 0 0
c1t0d0
The top busy value of the PX800A is 80% during the install
while the NEC4571 showed 100% on several occasions.
This is probably the moment in time when the DVD does
the most reads per second.
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 fd0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 ramdisk1
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d1
0.0 18.6 0.0 2050.5 0.0 0.0 1.1 1.0 0 2 c2t0d0
955.1 0.0 1910.2 0.0 0.3 0.6 0.3 0.7 29 64 c1t0d0
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 fd0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 ramdisk1
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d1
1.1 117.3 8.5 2591.0 15.2 0.1 128.6 0.8 8 9 c2t0d0
909.6 0.0 1819.2 0.0 0.3 0.6 0.3 0.7 28 62 c1t0d0
And this one at the very end of the run.
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 fd0
2.1 0.0 13.9 0.0 0.0 0.0 0.0 0.0 0 0 ramdisk1
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d1
0.1 52.9 0.6 3718.9 0.2 0.1 4.3 1.3 1 7 c2t0d0
1874.3 0.0 3748.5 0.0 0.4 0.8 0.2 0.4 40 80 c1t0d0
The max transfer rate for the diskdrive is shown below
but was mostly below 10.000 kw/s
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 fd0
2.3 0.0 14.4 0.0 0.0 0.0 0.0 0.0 0 0 ramdisk1
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d0
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c0t0d1
3.1 121.4 14.1 20585.2 2.2 0.2 17.8 1.7 18 21 c2t0d0
85.9 0.0 171.9 0.0 0.2 0.6 1.8 7.5 11 64 c1t0d0
All in all I can conclude that the fastest SATA drive available
10.000 rpm
and one of the best DVD units DVD_ROM read speed = 16X
and a fair dualcore CPU results in a install time of 40 minutes.
I do belive that Moinak's HSFS improvments should be adopted.
//Lars
This message posted from opensolaris.org
