keep you Inormed if I find something ...
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Original message
From: Kevin Olbrich
Date: 11/25/16 19:19 (GMT+05:30)
To: ceph-users@lists.ceph.com
Subject: [ceph-users] Ceph performance laggy (requests blocked > 32) on
OpenStack
Hi,
we are running
If I use slow HDD, I can get the same outcome. Placing journals on fast SAS or
NVMe SSD will make a difference. If you are using SATA SSD, those SSD are much
slower. Instead of guessing why Ceph is lagging, have you looked at ceph -w and
iostat and vmstat reports during your tests? Io stat will
Hi,
we are running 80 VMs using KVM in OpenStack via RBD in Ceph Jewel on a
total of 53 disks (RAID parity already excluded).
Our nodes are using Intel P3700 DC-SSDs for journaling.
Most VMs are linux based and load is low to medium. There are also about 10
VMs running Windows 2012R2, two of them
