Gluster users - Feb 2015 - Lot of logs like 'STATUS: hashed_subvol volume1-replicate-0 cached_subvol null'

Hello,

I am testing glusterfs under Apache+Joomla to store the DocumentRoot. I'm
using Centos7 and gluster client 3.4.
After installing components/plugins when I browse the web I get a lot of
messages like:

[2015-02-12 15:14:11.327225] I
[dht-common.c:1000:dht_lookup_everywhere_done] 0-volume1-dht: STATUS:
hashed_subvol volume1-replicate-0 cached_subvol null

and the webserver takes a while to respond. I'm using this setup:

Volume Name: volume1
Type: Replicate
Volume ID: 1244bfa6-7c1f-493e-904c-043316640c9f
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: ds1:/data/desarrollo
Brick2: ds2:/data/desarrollo
Options Reconfigured:
performance.io-thread-count: 32
performance.cache-size: 256MB
performance.cache-refresh-timeout: 4
performance.cache-max-file-size: 2MB
diagnostics.client-log-level: INFO
diagnostics.brick-log-level: INFO

what may be causing the delay problem?

Thanks,
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