linux hd speed

[Antonis Sidiropoulos]

basika, profanws den me noiazei i akribeia.
Apla exw 2 diskous (enan scsi palio kai enan ata66)
kai thelw na dw sto peripou apodosi sto sygkekrimeno mixanima.
px. x kb / sec read, y kb/sec write gia ton kathena mia tyxaia xroniki 
stigmi,
kai dedomenou to ti yparxei sto disko kai to fragm.
profanws an oi apodoseis einai konta den mporeis na sygkrineis.
an omws to ena einai 10 kai to allo 100, tote yparxei diafora...
as einai kai cached read/writes auto pou metraw. den me peirazei.

A.


V13 wrote:

>On Sunday 14 December 2003 13:51, Antonis Sidiropoulos wrote:
>  
>
>>Yparxei kanena utility
>>pou na metraei to performance twn partitions ?
>>
>>Thelw na brw poios diskos/partition exei kalytero performance
>>sto mixanima mou, wste na xrhsimopoiw auto gia
>>pragmata pou theloun poly disk i/o.
>>    
>>
>
>Ligo xlomo to kobo na yparxei tetoio programma mias kai den mporeis na 
>metriseis 'taxythta partition'...
>
>H taxythta toy partition eksartatai apo poloys paragontes opos to ti exei 
>mesa, to fragmentation, to filesystem, thn ekdosi toy kernel k.a. kai sigoyra 
>den menei statheri sto xrono...
>
>An pali enoeis thn taxythta toy diskoy gia kapoio sygkekrimenh perioxh ths 
>epifaneias toy, tote kai pali den einai stathero kati tetoio mias kai 
>eksartatai kai apo to ti alla requests eksyphretei o diskos... Kata kanona ta 
>poio grygora partition einai ayta poy briskontai sto meso (meso opos leme 
>'mesos oros' kai oxi opos leme 'sth mesh') ton dedomenon poy diabazeis syxna 
>oste na apofeygeis ta megala seek times. Aytos einai kai o logos poy synithos 
>theleis to swap na einai se ena endiameso partition.
>
>An tora thes na breis se poio shmeio o diskos soy ta paei kalytera, tote AFAIK 
>oi diskoi einai statheroi se ola ta merh toys mias kai exoyn statherh goniaki 
>taxythta kai iso arithmo sectors/cylinder (asxetos me to an einai sto kentro 
>h sto ekso meros)
>
>  
>
>>A.
>>    
>>
><<V13>>
>  
>


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                       Antonis Sidiropoulos
http://users.auth.gr/~asidirop         e-mail: asidirop at csd.auth.gr
Aristotle University of Thessaloniki      Department of Informatics