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["Stephen M. Webb" <stephen.webb@xxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1333294 ***
    https://bugs.launchpad.net/bugs/1333294

It's not clear why you might think the desktop graphics compositing
manager might affect the kernel's disk caching policies.

** Changed in: compiz (Ubuntu)
       Status: New => Invalid

** This bug has been marked a duplicate of bug 1333294
   32-bit kernel HDD slow write speed

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https://bugs.launchpad.net/bugs/1468640

Title:
  disk slow after resume from suspend

Status in compiz package in Ubuntu:
  Invalid

Bug description:
  Installed 15.04 32 bit flavor desktop on Thinkpad W540 and T420

  after resume from suspend
  >_  dd if=/dev/zero of=/tmp/speed_test bs=10M count=10
  10+0 records in
  10+0 records out
  104857600 bytes (105 MB) copied, 37.8204 s, 2.8 MB/s

  to resume to disk speed back 
  >_  sync; echo 3 | sudo tee /proc/sys/vm/drop_caches

  >_  dd if=/dev/zero of=/tmp/speed_test bs=10M count=10
  10+0 records in
  10+0 records out
  104857600 bytes (105 MB) copied, 0.263862 s, 397 MB/s

  mentioned here as well
  http://ubuntuforums.org/showthread.php?t=2237026

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