NVMe performance degradation RHEL 7.2 to 7.3
Simple read tests show a significant performance degradation on RHEL 7.3
RHEL/CentOS 7.2
dd if=/dev/nvme0n1 of=/dev/null bs=256k iflag=direct 102020939776 bytes (102 GB) copied, 47,6167 s, 2,1 GB/s
RHEL/CentOS 7.3
dd if=/dev/nvme0n1 of=/dev/null bs=256k iflag=direct 204656082944 bytes (205 GB) copied, 162,362 s, 1,3 GB/s
System
Supermicro X10DRH NVMe: Intel P3700 400GB PCIe card
The Intel P3700 400GB NVMe card should be capable of 2,7 GB/s reads and 1,2 GB/s writes - what can I do to reach the limits of the hardware ?
Responses