Hello,
I have done a swapoff and then the df -h run fast.
# free -m
total used free shared buff/cache
available
Mem: 7958 5720 280 16 1956 1825
Swap: 0 0 0
time df -h
real 0m0.054s
user 0m0.000s
sys 0m0.003s
Should I reduce swappiness? Now it is 60.
Is it really needed all that ram to mount twelve glusterfs volumes (
~3764 GB )?
Regards,
--
Marco Crociani
Prisma Telecom Testing S.r.l.
via Petrocchi, 4 20127 MILANO ITALY
Phone: +39 02 26113507
Fax: +39 02 26113597
e-mail: marcoc@xxxxxxxxxxxxxxxxxxxxxxxx
web: http://www.prismatelecomtesting.com
On 20/07/2016 11:46, Marco Lorenzo Crociani wrote:
Hi,
I have a CentOS7 with rsnapshot that mount glusterfs volume and do
backups every day.
# yum list installed |grep glusterfs
glusterfs.x86_64 3.7.11-1.el7
glusterfs-api.x86_64 3.7.11-1.el7
glusterfs-client-xlators.x86_64 3.7.11-1.el7
glusterfs-fuse.x86_64 3.7.11-1.el7
glusterfs-libs.x86_64 3.7.11-1.el7
# free -m
total used free shared buff/cache
available
Mem: 7958 3401 213 4 4343 4146
Swap: 8063 2467 5596
After running the backups df -h is really slow:
# time df -h
File system Dim. Usati Dispon. Uso% Montato su
[.....]
s25gfs.ovirt:VOL_*** 100G 40G 61G 40% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 100G 50G 51G 50% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 200G 138G 63G 69% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 500G 412G 89G 83% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 500G 246G 255G 50% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 200G 98G 103G 49% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 200G 90G 111G 45% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 100G 43G 58G 43% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 500G 385G 116G 77% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 100G 52G 49G 52% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 100G 15G 86G 15% /mnt/VOL_***
s25gfs.ovirt:VOL_*** 400G 348G 53G 87% /mnt/VOL_***
real 0m24.068s
user 0m0.003s
sys 0m0.002s
while on another machine it took:
real 0m0.057s
user 0m0.000s
sys 0m0.006s
after umounting all gluster volumes and mounting those back:
# free -m
total used free shared buff/cache
available
Mem: 7958 652 3014 4 4291 6915
Swap: 8063 55 8008
time df -h
real 0m0.037s
user 0m0.001s
sys 0m0.002s
I mount the volumes in fstab with:
s25gfs.ovirt:VOL_*** /mnt/VOL_*** glusterfs
defaults,acl 0 0
Is there any memory leak or something nasty?
Regards,
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