Re: [PERFORM] Effects of setting linux block device readahead size

[James Mansion]

Greg Smith wrote:
Average seek time:      4ms
Seeks/second:        250
Data read/seek:        1MB    (read-ahead number goes here)
Total read bandwidth:    250MB/s
Most spinning disks now are nearer to 100MB/s streaming.  You've talked 
yourself into twice that, random access!

James


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