[gpfsug-discuss] FIle system vs Database

Marc A Kaplan makaplan at us.ibm.com
Fri Dec 1 04:25:30 GMT 2017


Indeed, for a very large directory you might get some speedup using

samples/ilm/mmfind directory -ls -maxdepth 1

There are some caveats, the same as those for the command upon which 
mmfind rests, mmapplypolicy.




From:   Skylar Thompson <skylar2 at u.washington.edu>
To:     gpfsug-discuss at spectrumscale.org
Date:   11/30/2017 04:44 PM
Subject:        Re: [gpfsug-discuss] FIle system vs Database
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Interesting, thanks for the information Marc. Could there be an 
improvement
for something like "ls -l some-dir" using the API, though? Instead of 
getdents +
stat for every file (entering and leaving kernel mode many times), could 
it be done
in one operation with one context switch?




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