May 1, 200917 yr Hi, I just built my first unraid server. everything is up and running and is great. i get pauses and stutters occasionally in video, from divx to blu-ray. it happens when i go to either access (the moment i open the tower subdirectory file i want to get at), or write to server, it will pause completely for ~5-8 seconds, or stutter and get choppy. even if i continue to write to share the video returns to normal, but it's the initial start, or change, in other reading/writing to server. when i started out i had a dual core opteron, have amd setup for unraid, that ran nicely at 2.6G, something is wrong with that chip though, i've tried it in a couple different boards and it's fried. so, i had to go with my backup, a single core athlon, winchester core, that one is set at 2.5G, i have some more headroom on the clockspeed for it, but i wanted it to be ultra stable for server use, and keep temps down too, for longevity. is my single core not enough? do you need the 2nd core when reading/writing, or doing either simultaneously? is there another reason it could be "stalling" on videos when i go to simply view shares (windows view)? thanks! rlr
May 1, 200917 yr How much RAM do you have? Stalling on access is typically due to not having the directory structure in cache (so it must read through it, causing a bit of a delay - I think this is a SAMBA issue). unRAID needs very little CPU power except when perhaps doing parity calcs (writing). More RAM may help this... and changing some system config for caching (forget it off hand, but there are a number of posts around tweeking settings).
May 1, 200917 yr Hi, I just built my first unraid server. everything is up and running and is great. i get pauses and stutters occasionally in video, from divx to blu-ray. it happens when i go to either access (the moment i open the tower subdirectory file i want to get at), or write to server, it will pause completely for ~5-8 seconds, or stutter and get choppy. even if i continue to write to share the video returns to normal, but it's the initial start, or change, in other reading/writing to server. when i started out i had a dual core opteron, have amd setup for unraid, that ran nicely at 2.6G, something is wrong with that chip though, i've tried it in a couple different boards and it's fried. so, i had to go with my backup, a single core athlon, winchester core, that one is set at 2.5G, i have some more headroom on the clockspeed for it, but i wanted it to be ultra stable for server use, and keep temps down too, for longevity. is my single core not enough? do you need the 2nd core when reading/writing, or doing either simultaneously? is there another reason it could be "stalling" on videos when i go to simply view shares (windows view)? thanks! rlr I use an AMD Athlon 64 4000+ ClawHammer 2.4GHz 1MB L2 Cache Socket 939 Single-Core Processor with no problem. I don't do blu-ray but I play my DVD collection (using DVDShrink w/o compression) without issue. The unRAID server goes to 3 XP based computers (one wireless) and all 3 can play movies at the same time so I am sure your processor can handle your unRAID server.
May 1, 200917 yr I currently runnig under a AMD athlon xp 1900+ and HD content is playing fine with the tvix 6500a. Network : 10/100 Mb 1 Gb corsair memory 8 WD HD (from 250 Gb to 1 Tb) I don't think the processor is the issue. What is your network speed ? 10/100 or Gigabit ? What is the bluray player cache size ? What is your memory size ? Are your HD spinning when that happens or not ? 5-8 seconds seems to me to be the average time to spin up a drive.
May 1, 200917 yr I gained about 15% write performance by re-clocking my AthlonXP 2500+ from 1100MHz (underclocked) back to 1800MHz, so the CPU was a limiting factor. There is very little load during reads though.
May 2, 200917 yr Aren't we back to the same problem already logged before (with no answer), which is that this happens when either a drive spins up or down, or you do a directory listing or ... Basically even though the streaming movie/mp3 can be from a different drive, if you do any of the above you get stutter and pauses. Very annoying, but there seems to be no answer to it
May 3, 200917 yr Author How much RAM do you have? Stalling on access is typically due to not having the directory structure in cache (so it must read through it, causing a bit of a delay - I think this is a SAMBA issue). unRAID needs very little CPU power except when perhaps doing parity calcs (writing). More RAM may help this... and changing some system config for caching (forget it off hand, but there are a number of posts around tweeking settings). I have 2GB of DDR500 (running at ddr500) i'll try and find something on changing cache, do you mean extra cache disk? isn't it still writing to one or the other though, so it would be the same, it takes longer to write with parity, but is the processor working any more? thx, rlr
May 3, 200917 yr Author I currently runnig under a AMD athlon xp 1900+ and HD content is playing fine with the tvix 6500a. Network : 10/100 Mb 1 Gb corsair memory 8 WD HD (from 250 Gb to 1 Tb) I don't think the processor is the issue. What is your network speed ? 10/100 or Gigabit ? What is the bluray player cache size ? What is your memory size ? Are your HD spinning when that happens or not ? 5-8 seconds seems to me to be the average time to spin up a drive. that's weird, i thought it was gigabit, but it's 10/100, do i need a gigabit network? idk what the bluray player cache is, i tried to find it real quick, but not sure, it's TMT3 platinum. 2GB ddr500 i know the drives were spun down some of the time, but i'm not sure if all the time when it happened. one time it was accessing a share that shared a disk with the one i was on, that made it do it the worst, not sure which disk it needed to read from though. thx, rlr
May 3, 200917 yr Author Aren't we back to the same problem already logged before (with no answer), which is that this happens when either a drive spins up or down, or you do a directory listing or ... Basically even though the streaming movie/mp3 can be from a different drive, if you do any of the above you get stutter and pauses. Very annoying, but there seems to be no answer to it that's very interesting, i was wondering if it was a known issue, hopefully a new version of OS will fix. seems like there shouldn't be any reason, if everything is running right, that it would do that, especially accessing a different drive. dual core doesn't help this? btw- right now i'm the only one on network, so nobody else is trying to access anything while I am. I'm going to add one more person, but I doubt there will be more anytime soon. thanks, rlr
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