Perfomance issue

[Ziki]

Hi,

I'm using Freenas 11.2 in a virtual machine running on vSphere 6.7. I'm running it as a home server on a HP Proliant ml350p g8 with 32GB RAM, 6 SATA disks of 4TB using RaidZ-2 (compression disabled) and a Mellanox Connectx-3 card connected in 10gbe. The VM is configured with disk access in RDM mode (the p420i controller is not working in pass-trough mode) and with 16GB RAM reserved.

I have a performance issue that I can't explain. The disk performances are good and the bandwidth checked with JPerf are also ok (see below) but when I transfer a file from a W10 workstation in SMB I'm getting an average reading speed of 250MB/s and a writing speed of 320MB/s.

Maybe someone here may have an explanation why I can't get the same speed I get with dd when I transfer a file through network?


[root@freenas /mnt/pool0/Data]# dd if=/dev/zero of=tmp.dat bs=2048k count=50k 51200+0 records in 51200+0 records out 107374182400 bytes transferred in 238.190964 secs (450790326 bytes/sec) [root@freenas /mnt/pool0/Data]# dd if=tmp.dat of=/dev/null bs=2048k count=50k 51200+0 records in 51200+0 records out 107374182400 bytes transferred in 216.307632 secs (496395718 bytes/sec)

------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 64.0 KByte (default) ------------------------------------------------------------ [ 4] local 10.0.0.10 port 5001 connected with 10.0.0.4 port 35413 [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.0 sec 11.0 GBytes 9.41 Gbits/sec ------------------------------------------------------------ Client connecting to 10.0.0.4, TCP port 5001 TCP window size: 34.9 KByte (default) ------------------------------------------------------------ [ 3] local 10.0.0.10 port 25610 connected with 10.0.0.4 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 8.52 GBytes 7.31 Gbits/sec

Thank you for your help,

Cyrille

 

[Chris Moore]

The VM is configured with disk access in RDM mode (the p420i controller is not working in pass-trough mode)

Then you need a different controller that you can pass through.

"Absolutely must virtualize FreeNAS!" ... a guide to not completely losing your data.
https://forums.freenas.org/index.ph...ide-to-not-completely-losing-your-data.12714/

 

[Ziki]

I have another one but I was missing SAS cables, I should receive it today but I was wondering why separate elements was working ok but when I put all together something goes wrong.

I hope it will be better with a different controller.

 

[Chris Moore]

You might want to take a look at this build as they have a lot of great things about this topic :

Build Report: Node 304 + X10SDV-TLN4F [ESXi/FreeNAS AIO]

https://forums.freenas.org/index.ph...node-304-x10sdv-tln4f-esxi-freenas-aio.57116/