[Samba] vfs_fruit and memory usage
h.reindl at thelounge.net
Tue Apr 5 11:11:37 UTC 2016
Am 05.04.2016 um 13:03 schrieb Ralph Boehme:
> On Tue, Apr 05, 2016 at 12:43:37PM +0200, Reindl Harald wrote:
>> what is wasting that much RAM if vfs_fruit is enabled?
>> had 4 OOM-killers today after not face a single one in the last 7 years and
>> on a different machine i swa a smbd process eating up 6500 MB on a HP
>> Microserver with 8 GB RAM due copy a 300 GB folder with a Apple client and
>> even not release the memory after the operation was finished
>> root 24301 1.9 22.3 1323692 903600 ? SN 12:29 0:13
>> /usr/sbin/smbd -D
> just got a private mail from someone else who ran into the same issue.
> Can you run smbd under valgrind with memcheck?
not that easy in production and it seems to be unpredictable to trigger
at least the problem must exist longer because the case with 8 GB of
physical RAM completly eaten was on CentOS 7 with
samba-4.2.3-12.el7_2.x86_64 while todays issue happened on
*maybe* you can reproduce it by copy a really large folder with many
files and subfolders over a Mac client - on the other hand today it was
triggered by afpd allocating memory and OOM-killer decided the process
with largest memory usage is some smbd
not sure how smbd did grow that large because on the main fileserver
apple clients only use netatalk for now which triggeres
"fruit_fset_nt_acl: SMB_VFS_NEXT_FSET_NT_ACL failed" and like messages
from time to time
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