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On Wed, Dec 8, 2010 at 3:19 AM, David Ford <david@×××××××××.org> wrote: |
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> On 12/07/10 19:34, wireless wrote: |
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> > [... |
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> > You've got to be kidding me? I posted on Gentoo user a few |
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> > days ago (NOV 8th) about a netbook. The resounding number |
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> > one issue is avoid SSD and get a mechanical HD! |
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> > <from a pretty smart person> |
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> > "Those SSDs are shite. Get a mechanical drive. 8G is also |
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> > not enough and the write performance is pathetic. " |
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> |
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> from another pretty smart person - and an empirical relationship. i have a |
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> dell w/ an SSD drive. have had it for a year now. it goes -everywhere- |
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> with me, daily. physically, it's been dropped, kicked, whacked, you name |
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> it. the SSD drive is still cruising along nicely. for r/w workload, i run |
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> gentoo on it and do nightly ~x86 updates. so the only rest it gets is the |
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> short period between finishing nightly updates and when i grab it and hit |
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> the road. the only time it gets shut off is if i happen to run out of |
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> battery every few months. |
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> |
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> it's not the same as a 15K drive, but then, it's not a 15K drive. unless |
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> you want to pay really outlandish prices, you won't find that type of speed |
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> on a laptop. it would eat batteries like bot snacks. |
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> |
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> the really smart thing is to really know what sort of hardware you |
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> get/have, and understand how to pick $better kernel driver vs. |
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> $generic_fallback thingie. you can't expect even a performance drive to |
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> operate smashingly if you're loading the generic |
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> i-can-just-barely-make-it-work driver :) |
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> |
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> |
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> |
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I feel I need to share my SSD data ;-) |
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I have a Lenovo x200 laptop with 60GB ssd from OCZ. |
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$ hdparm -tT /dev/sda |
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/dev/sda: |
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Timing cached reads: 3746 MB in 2.00 seconds = 1874.96 MB/sec |
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Timing buffered disk reads: 340 MB in 3.02 seconds = 112.67 MB/sec |
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I have a board with SD card that will perform 22 MB/sec. This is a ~5 fold |
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difference. |
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So it seems to me (I know it's not a double blind test), from my little |
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experience, that SD is not fast as SSD. |
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(please correct me if I'm wrong here). |
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Regards, |
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Kfir |
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