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On Wed, 2011-03-16 at 08:29 +0800, Bill Kenworthy wrote: |
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> On Tue, 2011-03-15 at 15:26 +0000, James wrote: |
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> > Bill Kenworthy <billk <at> iinet.net.au> writes: |
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> > |
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> > |
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> > > I have recently added a WD 2TB green drive to two systems and am finding |
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> > > terrible performance with btrfs on an LVM using these drives. |
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> > |
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Just some feedback now Ive fixed it. Moved all the valuable data off |
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the lv, dropped the rest and shrunk the vg off the disk. Recreated the |
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partitions using fdisk and restored the lv and btrfs. Only the initial |
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partitioning and the pv were set up specifically 4k aware. |
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As a simple benchmark using dirvish to backup in the same fashion as I |
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was previously, time went from 18-19 minutes down to just over 3 minutes |
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- ~6 time speedup, same times as on older disks using reiserfs. I feel |
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reiserfs is a little faster at this, but not by much and no solid |
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figures as too much has changed. |
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I'm happy! |
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BillK |
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