Originally Posted by DeanM
Just an update on this. There might be some issues with the iSCSI target software from MS combined with Intel 82579V NIC (on-board NIC on DH67BL). I don't know... maybe it is just exposing bugs in the Intel driver. I've had my server twice now flooded with interrupts, in one case making contact with the server almost impossible. The interrupt/DPC activity uses about 10-12% of CPU on my i3-2100T on the server. I had one HTPC recording fail because of this (Olympic Opening Ceremony). Fortunately, I was able to record a later broadcast, so no big deal.
At this point, I've updated to the latest Intel NIC drivers and will test it some more.
I have only seen this interrupt flood one other time (a long time ago before I was using iSCSI) so perhaps it is just an Intel driver bug that happens intermittently...
Makes me wonder if installing a server grade NIC might help.
Thanks for the update. I have a 4-port I340-T4 Intel server NIC and I haven't seen this issue. I've always gone to station-drivers.com and gotten the latest WQHL drivers from there for Intel NICs. Right now I'm running Intel Network Connections software 126.96.36.199 that I DLed from there, no problems, although Windows update has told me that there are newer drivers for my NICs I set it to hide/ignore (I'm not sure if I trust Windows Update for drivers, esp NIC, video card, sound card, etc.)
As for my own setup, digging through dozens of web pages I discovered that Windows 7 does NOT support MPIO, so I was obviously not successful in setting it up. Unless there is some kind of work around (all of the checkboxes relating to MPIO are greyed out), I will stick with my current setup. I settled on a 4-port LAG (team with LACP) on my server side and a similar 4-port team on my PC. Both go through a Netgear GS724Tv3 24-port smart switch. I set up my iSCSI target and initiator on that network connection b/t the PCs, and I have a D-Link DAP-1522 bridge supplying internet to the switch, which then allows all (both) PCs to connect to the 'net. The bridge may be my bottleneck right now as some clients can stutter while streaming high bandwidth HD video. I'm planning to upgrade that bridge to an N300 capable one, hopefully I can get everything streaming smoothly with multiple clients. I tried streaming multiple HD streams simultaneously on my desktop PC, smartphone, iPad, Nexus 7, and also copied large mkv's over the network; I still got a bit of buffering and I think the ethernet bridge gets maxed out or can't handle the load, cuz everything outside the switch seems to be affected.
I got the inspiration for the testing from this video: http://www.youtube.com/watch?v=ycbq_gTqT5M
where he has multiple file transfers going at 110MB/s or is streaming multiple videos simultaneously, but I think all his test PC's are running through the same switch, i.e. wired.