write-speed

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    Write Performance auf Ceph Pool verbessern

    Hallo zusammen, derzeit betreibe ich ein Proxmox Cluster mit Ceph als Shared Storage. Hardware pro Node: i5-12500 64GB DDR5 RAM 3x 1,92TB PM883 SSD LACP 2x 10Gbit für Cluster Network LACP 2x 10Gbit für VM Network Bei Benchmarks des Storages bekomme ich maximale Schreibwerte von rund...
  2. A

    [SOLVED] Only 8xMB/s writes when SATA controller is passed through

    Hi all, I tried to PCI passthrough a SATA controller (not the onboard one) to my vm and found a significant performance drop, the write speed was dropped to 8x MB/s. But when I mount it directly on PVE, the writing speed came back to normal. Can someone help me on this issue? Thank you! Here...
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    ceph rbd slow down read/write

    Summary: pve-manager/5.3-5/97ae681d (running kernel: 4.15.18-9-pve) ceph version 12.2.8 (6f01265ca03a6b9d7f3b7f759d8894bb9dbb6840) luminous (stable) 4 nodes (per node: 4 nvme ssd & 2 sas ssd, bluestore) + 1 node with 4 sata ssd interconnect - 2x 10Gbps Created pool (512 PGs, replicated 3/2) on...
  4. C

    Ubuntu Xenial/Bionic kernel 4.13/4.15 virtio-scsi direct sync 4k write performance regression

    Hi Proxmoxers, Just found out today that when using Ubuntu Xenial kernel 4.13, the direct synchronous write performance is 93% slower than on kernel 4.4. Kernel 4.13 direct sync 4KB write could only achieve 303KB/s while kernel 4.4 could achieve 4.5MB/s. The VM is using ext4 filesystem and...
  5. G

    Extremely poor write performance

    I am using latest proxmox 4.4-13 , 3 cluster setup with freenas NAS box with NFS and SMB shares NFS shares for VM disks (mounted on proxmox) On 2 different servers, running 2 different OSes (win 7 and win 10) with different file formats - RAW vs qcow2 and even different controllers (SATA vs...
  6. M

    Windows Server 2016 Slow Write Speeds on NVME SSD?

    I have a Samsung 950 PRO PCIe NVMe 512gb M.2. I just installed Proxmox to test-out Windows Server 2016 in it. I went with viostor because that's the only driver during the install windows accepted, expect for SATA and IDE but they are too slow. Super fast read speeds!!! 6,550 MB/s. But crazy...
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