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

[Karl-Philipp Richter]

Public bug reported:

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)

** Affects: gparted (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug utopic

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https://bugs.launchpad.net/bugs/1396856

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

Status in “gparted” package in Ubuntu:
  New

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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