allanp81

Diags attached. downloadbox-diagnostics-20161202-1330.zip

My unraid box appears to be having issues recently bu tI can't see an obvious reason why. The disks are all showing as ok with 0 errors but each time I do a parity check I get ~800000 errors that clearly aren't being corrected (it's ticked to correct when running the parity check). I'm also seeing issues when accessing from a windows machine via smb with strange lock up and what looks like smb streams that are hanging when viewing from the console. For instance I try to browse a directory contents from Windows and it just hangs the explorer window. If I try to browse the same directory by sshing into my unraid box I can list the directory contents without any issue. How can I dig further to find out what or where the issue?

I don't know if DVB-C works in the same way. I know that when I had a DVB-S2 receiver I could only tune 1 per channel per tuner.

IF using DVB-T it's easy as each multiplex contains more than 1 channel. Depending on bitrate you could easily have 10 channels per multiplex.

Unraid is version 6.1.9 Syslinux.cfg: Windows 7 and Windows 10 VMs virtio drivers are 0.1.102 No GPU passthrough. Network bonding is off.

It seems also worth noting that using a Windows 10 VM doesn't seem to have any issues with the same config XML as a Windows 7 desktop. This is my config: My CPU is only a core i5 4460 which as far as I can tell doesn't support hyperthreading. I have isolated core 2 and 2 in my flash config.

I think I've read that post before sadly. If I use something like dpclat, it shows almost continual green with very very low latency but occasionally it'll just spike red. I put my TV tuner in and passed it through to the VM (had to use PCI-E override to do this though). While it works fine, the dpclat app then shows it alternating between green and yellow almost continually the whole time I have a TV channel tuned (only seems to affect HD broadcasts for some reason, I'm assuming due to the larger data rate?).

Spoke too soon. While the latency is massively improved I still get random spikes that ruin any chances of using my TV tuner

So glad I found this thread! Scaling the scaling_min_freq to match the scaling_max_freq fixes all of my latency issues!!! Is there anyway I can make it a permanent change though that will survive a restart of Unraid?

Sorry to be a pain, but can I ask how you've configured your VM? I've tried this and Win7 seems to have latency issues and ends up just dropping lots of packets making it unwatchable.

OP, how have you configured your TV tuner passthrough? Do you see any issues with dropping packets when tuned to HD channels?

Just to add that reading the suggestions in this thread seems to have solved my latency problems as well when running a Windows VM. Thanks to all who contributed!

As a follow up to this, I've since tried this on another motherboard (with DQ67OW chipset) and have exactly the same issue. Is there no config etc. that can changed/adjusted to combat this?

Latencymon (http://www.resplendence.com/latencymon) also gives the same results sadly. The way mediaportal works is it uses the BDA functions in Windows to tune to a channel and just writes the transport stream to the local disk (or location of your choice). You can see that the latency spikes it makes Mediaportal drop packets which basically means you get the picture broken up when you try to watch TV on a client. Some more info can be found here http://wiki.team-mediaportal.com/1_MEDIAPORTAL_1/16_Support/Troubleshooting/Stuttering_Playback

Thanks for the reply. I don't think the issue is with my tv card etc. though as I have the same issue on a blank machine with nothing passed through.

Well I think I spoke too soon I tried a dlink dge-530t (pci) and intel gigabit (pci-e) card and had the same results with both I think I'm going to have to give up and just use win7 and something like drive bender which is a shame as I've paid for unraid now.

I *think* I may have sorted this. I changed the virtio network adapter link speed to be 1Gbit rather than the 10Gbit that it defaulted to and so far I'm seeing almost entirely green when I run the DPC latency checker. It's not perfect but it seems to be definite improvement. I have an intel gigabit nic I can try now as well in place of the onboard realtek so will see if that helps matters further.

I think I installed the virtio-win-0.1.96 but any newer versions I download don't install as Windows says it already has the latest version of the NIC driver installed.

Ok cool, I can borrow one from work and give it a go and let you know. Otherwise there's no other obvious reason why it would be spiking so badly on the latency?

No, but I added the section at the end for the hostdevice (my pci-e tv tuner) and the 2 entries under features for viridian and hap as I'd read on another forum that someone had success adding those entries. I also created a brand new VM for testing with nothing installed other than the virtio drivers and it has the same issue with latency. FWIW, my server is a corei4 4460, asus z97-p motherboard with 16Gb of RAM. I have tried using a proper GPU but for some reason it just blue screens the win7 guest complaining about viostor.sys if I try and enable passthrough!

No-one? As it I'm starting to think this is not going to work as the TV part is a major component I need to work properly and I feel like I've wasted money if there's no solution.

I've set up a windows 7 VM and successfully passed through my PCI-E TV tuner for use with Mediaportal TV tuner. Unfortunately I'm having some latency issues that are manifesting themselves as drop packets in the TV server software. Normally this is caused by bad signal but I know this not to be the case. This means that watching TV on a client has picture breakups that are incredibly annoying. Using a latency checker (http://www.thesycon.de/deu/latency_check.shtml) I can see that the latency is all over the place, way above what it should be. Lots of yellow and red spikes. Here is a copy of my kvm xml in case anyone has any ideas if there's a way I can solve this:

I'm trying to run unraid on an old Intel DQ45CB motherboard with core2duo 8500 cpu. Using the onboard sata slots it works great, I even got pci passthrough working with my tuner card. I've tried using an IBM m1015 (crossflashed to LSI) and now a supermicro AOC-SAS2LP-MV8 and both seem to just completely lock the system up. The m/board only has 1 PCI-E slot that will accomodate the card as the rest are all only 1x slots. Normally this slot would be used for the graphics card. I've run memory tests and all pass so does anyone have any idea why it might just lock up? It's semi random but generally doesn't run for long until it locks up

I'm sure we ran it on machines with only 1Gb where I work in the past.

I was only testing out unraid as I'm in the process of upgrading my server and wanted to make sure everything was going to work. Ideally it should've refused to allow me to create the vm with such a small amount of ram.