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On Sun, Jul 22, 2012 at 1:46 PM, Florian Philipp <lists@×××××××××××.net> wrote: |
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> Am 22.07.2012 20:35, schrieb Michael Hampicke: |
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>> Am 22.07.2012 19:46, schrieb Florian Philipp: |
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>>> Am 22.07.2012 19:30, schrieb Pandu Poluan: |
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>>>> |
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>>>> On Jul 23, 2012 12:05 AM, "Michael Hampicke" <gentoo-user@××××.biz |
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>>>> <mailto:gentoo-user@××××.biz>> wrote: |
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>>>>> |
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>>>>>> I have just a (maybe silly) question... |
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>>>>>> I saw on some forums that partitionning SSDs could slow down read/write |
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>>>>>> access. |
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>>>>>> Is it true or simply intox ? |
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>>>>>> On my sata HD, i have boot, /, usr and home separated partitions. |
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>>>>>> What do you think of it ? |
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>>>>> |
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>>>>> This could happen of the partitions on the SSD are not properly aligned. |
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>>>>> The guides I know on this subject are german, but thats no problem, just |
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>>>>> do a google search for something like "linux ssd partition alignment". |
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>>>>> There you will find all the ansers you need. |
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>>>>> |
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>>>>> If I remember correctly parted has a built-in alignment check. |
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>>>>> |
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>>>> |
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>>>> Even the venerable fdisk now properly align partitions, IIRC. |
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>>>> |
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>>>> Rgds, |
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>>>> |
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>>> |
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>>> cfdisk is one of the few that don't. |
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>>> |
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>> |
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>> Right, cfdisk was the one, but I always likes it's console 'gui' as it |
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>> was so easy to use. But cgdisk (of sys-apps/gptfdisk) is a good |
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>> replacement for cfdisk. |
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>> |
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> |
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> Good to know. cfdisk was my favorite, too. |
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|
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You can still use it, you just have to specify the start sector |
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yourself and don't accept the default. :) |
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|
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4MB is almost always a safe starting point to use for SSD or other |
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flash-based storage. (Most fdisk tools default now to 1MB which should |
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be safe for all HDDs but not necessarily the best choice for flash |
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storage because of erase blocks etc.) Unfortunately the exact perfect |
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alignment depends on the specific device you're using so there is no |
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catch-all solution. There are tools like flashbench will will try to |
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reveal the optimal settings via destructive tests. |
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