[Bug 1396856] Re: block size limit for partition moving slows down fast devices

[Phillip Susi]

Generally speaking, the block size makes very little difference anyhow
so I think that is a red herring.  Can you provide more information
about this move?  What kind of filesystem?  From where to where was it
moved?  Can you run dd if=/dev/zero bs=1MiB
of=/path/to/some/file/on/this/drive count=512 to verify it can sustain
that kind of throughput?


** Changed in: gparted (Ubuntu)
       Status: New => Incomplete

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Title:
  block size limit for partition moving slows down fast devices

Status in gparted package in Ubuntu:
  Incomplete

Bug description:
  When I move a 200 GB partition on a 500 GB SSD which usually writes up
  to 300 MB/s I only get 50 MB/s write speed and the algorithm to test
  the best block size only 1,2,4,8 and 16 MiB. 32 MiB should be tested
  in order to avoid the block size to become the bottleneck of the move
  operation.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: gparted 0.19.0-1build1
  Uname: Linux 3.16.7-031607-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Nov 27 04:33:48 2014
  SourcePackage: gparted
  UpgradeStatus: No upgrade log present (probably fresh install)

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