Help configuring ethernet adapter advanced settings

[drwoodcomb]

I just picked up a couple MELLANOX MNPA19-XTR CONNECTX-2 10Gbe SFP+ network cards to directly connect my windows 10 desktop to my FreeNAS computer.

I found a guide that suggested tweaking some of the network adapter advanced settings can increase my speeds. Changing these settings on the Windows 10 PC was simple but I cant seem to find any information on how to change these things on the FreeNAS server.

Here are the suggested settings:

Code:

Interrupt Moderation										 Disabled
Jumbo Packet													9000 or 9014
Maximum number of RSS Processors		  # of logical cores
Maximum number of RSS Queues				 # of logical cores
Receive Buffers												 Maximum Value
Send Buffers													  Maximun Value
Receive Side Scaling									   Enabled
RSS Maximum Processor Number			   # of logical cores minus 1

With the exception of Jumbo packets (mtu in Freenas) I have not been able to figure out how to change these.

I am wondering if the options given to me when I type 'ifconfig' is what I am looking for but I cant seem to find any information on what all the different variable mean (except for mtu)

Code:

[root@freenas] ~# ifconfig mlxen0
mlxen0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000
		options=ed07bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
		ether 00:00:00:00:00:00
		inet 00.00.00.0 netmask 0xfffffe00 broadcast 00.00.00.000
		nd6 options=9<PERFORMNUD,IFDISABLED>
		media: Ethernet autoselect (10Gbase-SR <full-duplex,rxpause,txpause>)
		status: active
[root@freenas] ~#

options in bold

 

[joeschmuck]

Out of curiosity what are your thoughputs and how are you testing? Do you have an issue? Also what is your system specs?

 

[drwoodcomb]

Out of curiosity what are your thoughputs and how are you testing? Do you have an issue? Also what is your system specs?

I'm very sorry for the late reply:

My specs are as follows

Build FreeNAS-11.0-U4 (54848d13b)
Platform Intel(R) Xeon(R) CPU E3-1240 V2 @ 3.40GHz
Memory 24511MB
Motherboard Supermicro X9SMC-F
Storage 10x Western Digital SE


I guess I dont have a really solid methodology for testing since I'm not the most computer savvy person but I consistenly notice that whenever I transfer files from the server and back I always get this same result

My file transfers start out insanely fast but then slow to a crawl. For large transfers they start out at around 800 MB/s and then drop down to a few MB/s

If I am only transferring one 2GB file its almost instant. If I transfer a folder with lots of file thats when I get this issue.

 

[drwoodcomb]

Out of curiosity what are your thoughputs and how are you testing? Do you have an issue? Also what is your system specs?

Actually please allow me to elaborate a bit more. I am using iSCSI now. It seems like my sequencial speeds are really fast (1.3 GB/s) but when there are smaller files I am getting really bad speeds. I know that 4k write speeds are going to be slower but when I run crystal disk mark on the iSCSI drive I'm getting around 50 MB/s 4K speeds while in real like I'm getting 3-4 MB/s.