tmoran000 Posted August 8, 2018 Share Posted August 8, 2018 Can someone explain to what the allocated ram is and why it would be different from my installed ram.. Is the allocated ram what goes to VM's? Quote Link to comment
Squid Posted August 8, 2018 Share Posted August 8, 2018 17 hours ago, tmoran000 said: Is the allocated ram what goes to VM's? VMs, docker apps, etc. Its the RAM that's currently in use, excluding any caching performed by Linux Quote Link to comment
jazzysmooth Posted August 9, 2018 Share Posted August 9, 2018 I'm curious about this - I have a SuperMicro X8SIL-F motherboard with 2x 8G ECC REG quad rank DIMMs. There are 4 memory slots, 2 per channel. If I put the DIMMs in slot 1 Channel A and Slot 2 Channel A (blue slots), the BIOS screen shows 8 GB and UnRAID shows basically the same as what tmoran000 posted. If however I put the dimms in Slot 2 Channel A and Slot 2 Channel B, the BIOS shows 16 GB and UNRAID shows 16 GB in the "allocated" box. Of course the memory is no longer interleaved in this config, and the speed drops from 1066 to 800. But it appears I get access to all the ram. I'm wondering if the BIOS automatically enables memory sparing when 2 dimms of the same size / type are on the same channel? If so, I see no means to disable it like I do on Dell servers. As an aside, the system won't boot with only 1 DIMM, or if I populate Slot 1 Channel A and Slot 1 Channel B. Quote Link to comment
tmoran000 Posted August 11, 2018 Author Share Posted August 11, 2018 So here is a question.. I am allocated 7.9gb, I have 16gb installed but it shows me using 61%... the math doesnt add up. 7.9 of 16 is not 61% Quote Link to comment
Delarius Posted August 13, 2018 Share Posted August 13, 2018 I'm almost certain you've got some form of memory sparing turned on. I had this exact same issue when I first got my Supermicro board and it took quite some Bios searching to disable the memory sparing feature. Normally those numbers should be the same or just about the same. The percentage of memory used (61% in your case) is 61% of allocated memory (8GB) - you can verify this is correct by typing: free -h on the command line. 1 Quote Link to comment
tmoran000 Posted August 13, 2018 Author Share Posted August 13, 2018 ya something is Def not right. Based on the Free -h command it is saying that I only have 7.8gb total which I know is incorrect so Somehow unraid is not seeing the other 8gb I have Quote Link to comment
tmoran000 Posted August 17, 2018 Author Share Posted August 17, 2018 I figured this out. It was that my ram cards were installed in A1 and B1 instead of A1 and A2. Moved the ram card and boom all is available now. Thanks everyone for the help Quote Link to comment
John_M Posted August 18, 2018 Share Posted August 18, 2018 The way DIMM slots are labelled is confusing and inconsistent but when they are colour coded I believe that it's pretty standard to populate slots of the same colour first. Quote Link to comment
tmoran000 Posted September 21, 2018 Author Share Posted September 21, 2018 On 8/18/2018 at 8:23 AM, John_M said: The way DIMM slots are labelled is confusing and inconsistent but when they are colour coded I believe that it's pretty standard to populate slots of the same colour first. These ones were not color coded, usually you are right, 2 one color 2 the other, this time all black and when ever I got a board like this is was always a1, b1, a2, b2 but this time it was a1, a2, b1, b2 . so my mistake not reading the manual. Quote Link to comment
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