SATA radic bez RAIDu

[Jan 'yanek' Bortl]

Dracula 007 wrote:
>  > # lspci | grep mass
>> 0000:01:06.0 Unknown mass storage controller: Silicon Image, Inc.
>> (formerly CMD Technology Inc) SiI 3114 [SATALink/SATARaid] Serial ATA
>> Controller (rev 02)
>> 0000:01:09.0 Unknown mass storage controller: Silicon Image, Inc.
>> (formerly CMD Technology Inc) SiI 3114 [SATALink/SATARaid] Serial ATA
>> Controller (rev 02)
>>
>> + 4x port onboard SATA II nForce4
>>
>> jeden z tech radicu je "Kouwell KW-571S-4 Serial ATA 4-port PCI adapter"
>> za nejakych cca 900 Kc. Bezi mi to takhle uz asi 4 tydny s 12ti diskama
>> (3x SW RAID5 v LVM) a bezproblemu.
> 
> A mate nebo muzete udelat nejaky rozumny benchmark? Nejlepe na jednom
> samostatnem disku a pak na tom raidu.
> 

Snad bude stacit alespon takto:

# hdparm --direct -t /dev/sdb /dev/sdi /dev/md1 /dev/md2 /dev/md3

/dev/sdb:
 Timing O_DIRECT disk reads:  184 MB in  3.02 seconds =  60.89 MB/sec

/dev/sdi:
 Timing O_DIRECT disk reads:  200 MB in  3.03 seconds =  66.09 MB/sec

/dev/md1:
 Timing O_DIRECT disk reads:  292 MB in  3.01 seconds =  97.10 MB/sec

/dev/md2:
 Timing O_DIRECT disk reads:  264 MB in  3.00 seconds =  87.97 MB/sec

/dev/md3:
 Timing O_DIRECT disk reads:  368 MB in  3.01 seconds = 122.39 MB/sec


sdb - WDC 320GB (WD3200JD) umistena prave na silicon image radici
      (jeden mam onboard druhy v pci slotu - stejny chipset)

sdi - seagate 750GB (ST3750640AS) umistena na onboard nforce4

md1 - sw raid5 pole skrz jeden sil.image radic (4 disky)
md2 - sw raid5 pole skrz druhy sil.image radic
md3 - sw raid5 pole skrz onboard nforce radic (4 disky)

Jestli chcete jiny "benchmark", tak staci rict. Uvitam cokoliv
nedestruktivniho :-) Nevim nakolik budou testy s bonnie presne diky pouziti
LVM a ext3 filesystemu.

Po flashnuti FW radic zacal umet i ty zminene 750GB disky. Vykon neni nijak
slavny, ale v tom bude mit prsty i pci sbernice. Resync raid5 ze stejnych
disku na nforce4 radici a tom silicon image byl cca polovicni (pozorovano
opakovane).

-- 
Jan 'yanek' Bortl <yanek [at] ya.bofh. cz>
http://ya.bofh.cz/ | jab: yanek [at] njs . netlab. cz
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