ext3 performance

[Tolga Evren]

Hi ,

 

Is there any parameter like maxcontig (solaris) in redhat linux? This is
the cluster size , and describes the amount of data which is read from
the disk . 

 

My redhat linux system cant read more than 64 kb. At each read. But one
of the sun servers can read up  tp 1mb. For eac read operation .

 

 

This is iostat -x :

 

 

Device:    rrqm/s wrqm/s   r/s   w/s  rsec/s  wsec/s    rkB/s    wkB/s
avgrq-sz avgqu-sz   await  svctm  %util

/dev/sda   14360.14 444.13 977.94 71.53 122701.78 4122.42 61350.89
2061.21   120.85    47.37    4.52   1.70 177.94

 

here r/s : 977.94 and rkB/s is  61350.89  . This means the system read
62.73 Kbytes per io. I want to increase this value ( so decrease the r/s
in order to have better io ) 

 

In sun solaris , this is possible by changing the maxcontig parameter
using tunefs -a 128 /dev/xxa  .

 

Is it possible to achive the same thing in linux?

 

 

Kind Regards,

Tolga Evren