[Bug 1290457] Re: boot from usb flash drive takes 10+ mins and runs slow

[codeslinger]

the only clear pattern is that the first time you try to do something such as "man less"  it took about 30 seconds to load....   but after that it loads from memory cache and is fast.  

on the other hand, firefox continues to stall with every page load even
on pages that have already been loaded.

Basically, any time that a program is run for the first time, it is very
slow to load but then runs at normal speed, and the second time that you
run the same program it loads very quickly..   However,  apt-get install
continues to have long stalls while unpacking and installing each app.


looking at the PATH showed nothing interesting, all of the folders exist and a directory listing was fast.  (except the first time the "ls" command was invoked it was slow.)

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Title:
  boot from usb flash drive takes 10+ mins and runs slow

Status in “casper” package in Ubuntu:
  New

Bug description:
  used the Startup Disk Creator to create a bootable flash disk with
  UbuntuStudio 14.04 AMD64 Beta 1 (Alpha)

  Booted from flash drive.   
  Boot Menu appears very quickly
  Verify Disk and Memory test behave normally

  [Try Ubuntu Without Installing] takes 10 to 15 minutes to bring up the
  login screen.  you see the busy splash while loading. hitting escape
  showed a dozen error messages about being unable to access the CD, but
  otherwise did not notice anything interesting.

  Once it is finally running and you are finally logged in after another long wait
  then some things behave normally such as DU, but other things are extremely slow.
  for instance the web browser takes many minutes to open and display pages.  the desktop wallpaper never appeared.  apt-get took many minutes to unpack and configure a couple of small programs such as htop and iotop, but it downloaded them in 5 seconds.

  I suspected at first that the problem was with (flash) disk writes,
  but some tests with DD showed that the write speed was fine.  FIle
  read speed also seems to be fine.  The first time that you try to do
  something like display a  submenu on the main App Menu, it takes a
  very long time to display, but after that it displays quickly, so
  obviously there is memory buffering going on.

  over-all the system is NOT usable when booted from the flash drive.
  Frequent Long pauses occur when doing routine things.

  However, when booted from a DVD, although the initial load seems to
  take longer than usual with excessive thrashing of the DVD, but once
  loaded everything behaves normally, speed is fine.  After installing
  to the harddisk everything also behaves normally and boots quickly.

  It is also worth noting that on this same computer I have successfully
  booted and installed from a flash drive with 12.04, 12.10, 13.04,
  13.10.

  (not sure of the project/area, but a similar bug was using casper)

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: casper 1.337
  ProcVersionSignature: Ubuntu 3.13.0-12.32-lowlatency 3.13.4
  Uname: Linux 3.13.0-12-lowlatency x86_64
  ApportVersion: 2.13.2-0ubuntu5
  Architecture: amd64
  CasperVersion: 1.337
  Date: Mon Mar 10 09:27:59 2014
  LiveMediaBuild: Ubuntu-Studio 14.04 "Trusty Tahr" - Alpha amd64 (20140224)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: casper
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.casper.conf: 2014-03-10T07:59:12.413937

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