[lfs-dev] New laptop

Bruce Dubbs bruce.dubbs at gmail.com
Sat May 3 13:10:40 PDT 2014


Fernando de Oliveira wrote:

> And the SBU, Bruce? I would like also to know the speed of the HD.

Interesting question.

TOSHIBA MQ01ABD075 750GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5"

# hdparm -tT /dev/sda

/dev/sda:
  Timing cached reads:   28030 MB in  1.99 seconds = 14097.22 MB/sec
  Timing buffered disk reads: 292 MB in  3.02 seconds =  96.76 MB/sec

Compare with

Seagate ST3250310AS:  (80G -- About 10 years old I think)
  Timing cached reads:   2140 MB in  2.00 seconds = 1069.94 MB/sec
  Timing buffered disk reads:  260 MB in  3.00 seconds =  86.65 MB/sec

Maxtor 6Y080M0: (250G)
  Timing cached reads:   2036 MB in  2.00 seconds = 1017.02 MB/sec
  Timing buffered disk reads:  172 MB in  3.02 seconds =  56.98 MB/sec

WDC WD3200AAKS-75L9A0: (300G)
  Timing cached reads:   14066 MB in  2.00 seconds = 7041.74 MB/sec
  Timing buffered disk reads: 330 MB in  3.00 seconds = 109.98 MB/sec

WDC WD1003FBYX-01Y7B0: (930G)
  Timing cached reads:   15114 MB in  2.00 seconds = 7566.89 MB/sec
  Timing buffered disk reads: 392 MB in  3.01 seconds = 130.37 MB/sec

INTEL SSDSA2CT040G3:  (40G SSD/SATA 2.0)
  Timing cached reads:   13530 MB in  2.00 seconds = 6772.63 MB/sec
  Timing buffered disk reads: 578 MB in  3.01 seconds = 192.17 MB/sec

   -- Bruce


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