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'[OT] Linux Ubuntu slowness'
2008\07\26@213836 by Sean Breheny

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Hi all,

I have a Toshiba laptop (Celeron M processor, 1.5GHz, 512MB ram, 80GB
hard drive) on which I recently installed Ubuntu Hardy Heron (I
originally had XP on it, I wiped it clean and installed Ubuntu). At
first it seemed to work wonderfully. However, in the last several
weeks, it will often take forever to do the simplest tasks. For
example, playing a Youtube video in Firefox, it will often halt for a
few seconds several times during the video, despite the fact that it
has buffered the data well beyond the point where it is in the video.
Also, when I am just opening files from the hard drive (PDF, XLS, even
text), it will often sit there for perhaps even several minutes while
the hard drive chugs away before it finally opens the file. It often
does this while loading web pages, too. Most of these times the
display will go "grey" and become unresponsive until it finishes
chugging, and then it will go back to full color and work normally.
Sometimes it will stay grey indefinitely and I will have to kill the
Firefox process.

I am not a Linux expert but I was able to use pidstat to see what
processes were using the hard drive so much. In the cases where
Firefox was active and very slow, it was Firefox itself which was
doing a whole lot of reading from the HD (surprisingly, it was doing
almost no writing to the HD).

I installed one round of Ubuntu updates a few weeks ago and it didn't
help. Now I see that more updates are available and I will try those.

Searching on Google hasn't turned up anything for me yet.

Any ideas?

Thanks,

Sean

2008\07\26@213956 by Sean Breheny

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One more question: I have a slight suspicion that the problem may be a
malfunctioning hard drive. How do I run diagnostics on the hard drive
and file system in Ubuntu?

Thanks,

Sean


On Sat, Jul 26, 2008 at 9:38 PM, Sean Breheny <spam_OUTshb7TakeThisOuTspamcornell.edu> wrote:
{Quote hidden}

2008\07\27@091220 by John La Rooy

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If there are disk errors you might see something in /var/log/messages

otherwise try installing smartmontools.

ff3 was pretty awful when hardy just came out, so make sure you've got it up
to date

John La Rooy

On Sun, Jul 27, 2008 at 11:39 AM, Sean Breheny <.....shb7KILLspamspam@spam@cornell.edu> wrote:

> One more question: I have a slight suspicion that the problem may be a
> malfunctioning hard drive. How do I run diagnostics on the hard drive
> and file system in Ubuntu?
>
> Thanks,
>
> Sean
>
>

2008\07\27@095531 by Jake Anderson

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2 things to do as a bit of a prelimanary check
easiest way is to use another machine to ssh into the one you want to
look at
then run
top
to see whats eating cpu cycles/ram and use
tail /var/log/syslog -f
to see if anything is being reported to the system log
(ctrl + c to exit)

Sean Breheny wrote:
{Quote hidden}

2008\07\28@093414 by Adam Field

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Use smartmontools:

https://help.ubuntu.com/community/Smartmontools

Hard drives have a self diagnostic capability called SMART. The
program "smartctl" will let you run diagnostics on the drive.

For file systems you need to use fsck. But the file system cannot be
mounted read/write if you want to verify it. You can boot into single
user mode to check out your filesystem(s).

On Sat, Jul 26, 2008 at 9:39 PM, Sean Breheny <.....shb7KILLspamspam.....cornell.edu> wrote:
> One more question: I have a slight suspicion that the problem may be a
> malfunctioning hard drive. How do I run diagnostics on the hard drive
> and file system in Ubuntu?
>
> Thanks,
>
> Sean

2008\07\28@122845 by Justin Richards

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I have been trying to downgrade (upgrade ???) my laptop hp pavillion
9615tx from vista to XP ever since I bought it, with no help from HP
whatso ever, so finally gave Hardy Heron a go.  What a difference.
Everything worked !!! and it is so responsive.  I now OWN my laptop
for the first time, it does what i ask it to do.  Video play back is
supreme ...

but I have to say on rare occasions it kinda stalls, but i am willing
to put up with this minor hicup. I am extremely impressed nonetheless.
It is network related tasks, if I browse the network for example,
sometimes it justs sits there, other times it is lightning fast.

XP drivers seemed non-existant but ubuntu had no problems.  WOW, what
a difference.  I had tried previous versions/distros and had problems
connecting to the network etc and that made it difficult to fix
anything else.

Someone has been very busy down at ubuntu HQ, and I am very thankful.

Justin

, t
On Mon, Jul 28, 2008 at 9:33 PM, Adam Field <EraseMEadamspam_OUTspamTakeThisOuTbadtech.org> wrote:
{Quote hidden}

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