Controlling directory polling?

Richard W. Knight rick_knight at rlknight.com
Thu Oct 10 18:36:32 BST 2002


I have fam and fam-devel on my RH 7.3/KDE-3.0.3 system but I don't see a 
"fam daemon".  Where did you find it?

Thanks,
Rick Knight

Johnny Ernst Nielsen wrote:

>>KDE 3.0.3
>>
>>The question is.
>>Is there any way of turning directory polling off all together?
>>
>>Perhaps, is there any way to tell the system to _not_ poll certain
>>specified directories?
>>
>>I have automount set up for my floppy and my CD-ROM.
>>Whenever I use look at these two automounted directories, they are
>>continually polled.
>>Especially the floppy is a drag because the polling slows the
>>application so that it is useless. The floppy polling kind of
>>freezes the entire system, while the polling is done. Then a few
>>seconds break where the system works. Then another poll and another
>>"freeze".
>>
>>Also, even if I go away from the automounted floppy in the app to
>>view an other directory, KDE keeps polling the floppy.
>>
>>The same goes for almost all other ordinary KDE apps, like kate and
>>konq.
>>Only the konsole hasn't got this problem.
>>    
>>
>
>Funny, replying to myself.
>
>There is a solution.
>
>Use the FAM/fam daemon.
>
>The part of KDE that continually polls the directories is called 
>KDirWatch.
>However, this KDE service only resorts to polling if it can not find 
>the FAM daemon.
>When it uses the FAM daemon, the annoying 5 second polling stops, 
>while at the same time providing directory updates.
>It is like the FAM daemon "tells" KDE whenever something happens, in 
>stead of KDE having to continualy "ask" if anything has happened.
>It lowers the load on the computer.
>
>Best regards
>Johnny :o)
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