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List:       kde-bugs-dist
Subject:    [Bug 111653] New: Hard disk very slow when enabling the KDED Media
From:       Tako Schotanus <quintesse () palacio-cristal ! com>
Date:       2005-08-28 14:52:09
Message-ID: 20050828165208.111653.quintesse () palacio-cristal ! com
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http://bugs.kde.org/show_bug.cgi?id=111653         
           Summary: Hard disk very slow when enabling the KDED Media Manager
           Product: kdelibs
           Version: unspecified
          Platform: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: kded
        AssignedTo: bastian kde org
        ReportedBy: quintesse palacio-cristal com


Version:            (using KDE KDE 3.4.2)
Installed from:    Unlisted Binary Package
OS:                Linux

When I enable the KDED Media Manager the performance of my harddrive drops greatly. I \
noticed this after having upgraded to Fedora Core 4 but afterwards I upgraded to the \
latest 3.4.2 using the packages supplied by the kde-redhat project \
(kde-redhat.sf.net). Anyway, both the originals from Fedora as the packages from \
kde-redhat have the same problem.

I found this out because the hard disk would still run perfectly _before_ logging in. \
When I noticed that I started eliminating all the user processes one by one and \
stopping KDED returned the drive to normal. By enabling/disabling the services I \
found out that the Media Manager was the culprit.

A test with hdparm before and after turning off the Media Manager shows this:

   # hdparm -t /dev/hda

   /dev/hda:
    Timing buffered disk reads:   24 MB in  4.08 seconds =   5.88 MB/sec

and after:

   # hdparm -t /dev/hda

   /dev/hda:
    Timing buffered disk reads:  102 MB in  3.04 seconds =  33.57 MB/sec

As you can see the difference is quite big.

This happens on a Dell Latitude laptop and the fact that my desktop running the same \
FC4 with the very same packages does not have this problem seems to suggest that it \
is somehow hardware related. The same problem has not ever occurred under Windows \
though!

I also found out that in the very latest versions of KDE 3.4(.?) there is an autorun \
application that gets started to monitor if a CD gets inserted. This application \
shows the very same behaviour as the KDED Media Manager! If either of these two is \
running the hard disk is slow, if I kill both everything works fine.


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