Re: Slow Hard Drive?

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Mikkel L. Ellertson wrote:
> Srikanth Konjarla wrote:
>> All,
>>
>> I am running FC6 (with latest update, 64-bit) on AMD Dual Core with 1GB
>> RAM. It contains a SATA hard disk. I am experience sluggishness when
>> files are opened or closed (saved). I suspect that i have slow SATA
>> performance even though i am not sure. I have following stats.
>>
>> # hdparm -Tt /dev/sda
>>
>> /dev/sda:
>>  Timing cached reads:   2452 MB in  2.00 seconds = 1226.48 MB/sec
>>  Timing buffered disk reads:   86 MB in  3.03 seconds =  28.35 MB/sec
>>
>> I am concerned about 28.35 MB/Sec speed here.
>>
>> # hdparm -i /dev/sda
>>
>> /dev/sda:
>>  HDIO_GET_IDENTITY failed: Inappropriate ioctl for device
>>
>> # dmesg | grep -i sata
>> sata_nv 0000:00:0e.0: version 3.2
>> ata1: SATA max UDMA/133 cmd 0xE800 ctl 0xE482 bmdma 0xE000 irq 21
>> ata2: SATA max UDMA/133 cmd 0xE400 ctl 0xE082 bmdma 0xE008 irq 21
>> scsi0 : sata_nv
>> ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
>> scsi1 : sata_nv
>> ata2: SATA link down (SStatus 0 SControl 300)
>>
>> # lsmod | grep -i sata
>> sata_nv                29509  4
>> libata                120553  1 sata_nv
>>
>> Kernel Boot Parameter
>> kernel /vmlinuz-2.6.20-1.2933.fc6 ro root=LABEL=/1 noquiet
>> combined_mode=libata
>>
>> Any suggestions/recommendations/comments are welcome.
>>
>> Thanks
>>
>> Srikanth
>>
> You may want to check for other activity on the system. I normally
> try to do a couple of tests at different times to see if they are
> the same. Just after a system is booted is probably the worst time
> to check.
> 
>>From the hdparm man page:
> For meaningful results, this operation should be repeated 2-3 times
> on an otherwise inactive system (no other active processes) with at
> least a couple of megabytes of free memory.

Thanks for the response. My tests qualify to those conditions.

Srikanth
> 
> Mikkel


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