Benefit of sReadAhead on SSD

Posted Sep 23, 2008 14:49 UTC (Tue) by jreiser (subscriber, #11027)
In reply to: Video is available on youtube by kjp
Parent article: LPC: Booting Linux in five seconds

A little less than 3 seconds (75MB of data at 25MB/s). The CPU and the SSD are both always busy from t=1.02 to t=4 seconds. The transfer latency is almost completely hidden, whereas before there was little overlap. Compare the bootcharts.