Hi all, I have observed that in a Nautilus (14.2.6) cluster the mds
process in the MDS server is consuming a large amount of memory, for
example in a MDS server with 128 GB of RAM I have observed the mds
process it's consuming ~ 80 GB:
ceph 20 0 78,8g 77,1g 13772 S 4,0 61,5 28:37.62 ceph-mds
Sometimes I have observed consumption of 127 GB, so the MDS starts to
give slow request errors. In theory in the configuration I have limited
the mds_cache_memory_limit to a 64 GB:
[mds]
mds_cache_memory_limit = 68719476736
client_oc_size = 104857600
mds_min_caps_per_client = 200
mds_log_max_expiring = 200
mds_log_max_segments = 250
What could be the reason for this excessive memory consumption?
--
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Andrés Rojas Guerrero
Unidad Sistemas Linux
Area Arquitectura Tecnológica
Secretaría General Adjunta de Informática
Consejo Superior de Investigaciones Científicas (CSIC)
Pinar 19
28006 - Madrid
Tel: +34 915680059 -- Ext. 990059
email: a.rojas@xxxxxxx
ID comunicate.csic.es: @50852720l:matrix.csic.es
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