ERM-Consulting
Dabbler
- Joined
- Sep 6, 2020
- Messages
- 14
I am wondering why nobody discusses the performance of VMware virtual disk 2.0 within freebsd.
I checked many many posted dmesg outputs in this forum as well as in freebsd and xigmanas: all posted protocols are showing reports like following:
It is obvious that all VMware Virtual disks 2.0 only provide 300.000MB/s.
Even the provided CD-ROM provides 600.000MB/s.
In my case (example) we are using 12Gb/s disks in esxi and provide RAID6 based datastores to VM.
We lose about 1/4 of performance due to VMware Virtual compared to passthrough disks
=> Yes, ZFS and direct disk access is recommended, but why does nobody wonder about this poor performance?
=> Does anybody know a solution for this issue?
I checked many many posted dmesg outputs in this forum as well as in freebsd and xigmanas: all posted protocols are showing reports like following:
cd0 at ahcich0 bus 0 scbus2 target 0 lun 0
cd0: <NECVMWar VMware SATA CD00 1.00> Removable CD-ROM SCSI device
cd0: Serial Number 00000000000000000001
cd0: 600.000MB/s transfers (SATA 3.x, UDMA2, ATAPI 12bytes, PIO 8192bytes)
cd0: 520MB (266420 2048 byte sectors)
da0 at mpt0 bus 0 scbus32 target 0 lun 0
da0: <VMware Virtual disk 2.0> Fixed Direct Access SPC-4 SCSI device
da0: 300.000MB/s transfers
da0: Command Queueing enabled
da0: 8192MB (16777216 512 byte sectors)
da0: quirks=0x140<RETRY_BUSY,STRICT_UNMAP>
da1 at mpt0 bus 0 scbus32 target 1 lun 0
da1: <VMware Virtual disk 2.0> Fixed Direct Access SPC-4 SCSI device
da1: 300.000MB/s transfers
da1: Command Queueing enabled
da1: 22887268MB (46873125584 512 byte sectors)
da1: quirks=0x140<RETRY_BUSY,STRICT_UNMAP>
It is obvious that all VMware Virtual disks 2.0 only provide 300.000MB/s.
Even the provided CD-ROM provides 600.000MB/s.
In my case (example) we are using 12Gb/s disks in esxi and provide RAID6 based datastores to VM.
We lose about 1/4 of performance due to VMware Virtual compared to passthrough disks
=> Yes, ZFS and direct disk access is recommended, but why does nobody wonder about this poor performance?
=> Does anybody know a solution for this issue?