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Re: Performance issue of find function in Gluster File System


From: Chet Ramey
Subject: Re: Performance issue of find function in Gluster File System
Date: Thu, 17 Aug 2017 10:00:40 -0400
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 8/16/17 4:02 PM, Zhao Li wrote:
> Hi,
> 
> I found there is a big difference of time performance between "ls" function
> and "find" function in Gluster File System
> <https://gluster.readthedocs.io/en/latest/Administrator%20Guide/GlusterFS%20Introduction/>.
> Here is the minimal working example.
> 
> mkdir tmp
> touch tmp/{000..300}.txt
> 
> time find ./ -path '*tmp*' -name '*.txt'> /dev/null
> real 0m42.629s
> user 0m0.675s
> sys 0m1.438s
> 
> time ls tmp/*.txt > /dev/null
> real 0m0.042s
> user 0m0.003s
> sys 0m0.003s

These are not comparable commands.  It might be worth your while to
consider why and how the different commands operate.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/



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