mihcox Posted June 24, 2019 Share Posted June 24, 2019 I have an issue in my Plex DVR system. I have 80BB server memory and am transcoding 2-4 TV streams at times as recordings. I am getting notifications that there is "not enough disk space to start the recording". When I check my "Stats" page, I see 64GB of cache memory and only 4GB free. What would cause so much cached RAM, and is that the issue I am facing? bigrig-diagnostics-20190624-1421.zip Quote Link to comment
JonathanM Posted June 24, 2019 Share Posted June 24, 2019 If you are transcoding to the RAM Disk (/tmp) that could explain your symptoms. Try setting the transcode location to be mapped to your cache drive instead. Quote Link to comment
mihcox Posted June 24, 2019 Author Share Posted June 24, 2019 Should I create a new share for this /mnt/cache/transcode? Quote Link to comment
Abzstrak Posted June 25, 2019 Share Posted June 25, 2019 (edited) 11 hours ago, mihcox said: Should I create a new share for this /mnt/cache/transcode? I would, yes. Do your worst, abuse the system and see how big the transcode folder gets, then add 10-15% and go back to using a RAM drive that is at least that large assuming you have enough RAM. don't about the caching, its normal... unused memory is wasted memory.... it's a unix thing. No worries, the system gives it up for other use. Edited June 25, 2019 by Abzstrak Quote Link to comment
testdasi Posted June 25, 2019 Share Posted June 25, 2019 23 hours ago, mihcox said: Should I create a new share for this /mnt/cache/transcode? I would highly recommend transcoding to cache instead of RAM. While it's true that unused RAM is wasted RAM, I disagree with the notion that using it for transcode tmp makes it any less wasted. While Plex isn't system critical, it's what I call "happiness critical" e.g. I would imagine the overall happiness level of your household to drop significantly if Plex refuses to stream (due to insufficient memory for transcode tmp) so you have to go in and try to fix stuff. So even though theoretically yes the system will give it up for other uses, the RAM is almost exclusive reserved for Plex; therefore, unless you stream 24/7, such reserved RAM is actually even more wasted during down time. The original justification for running transcode tmp in RAM was due to concerns over SSD wear. Personally, I have found that concern to be completely unfounded. SSDs wears out very gracefully and lasts beyond their rated lifespan (except for Intel SSD). SSDs don't usually just die once reaching its limit (except for Intel SSD) but will simply reallocates bad cells and continues to use what is left. Quote Link to comment
presence06 Posted June 25, 2019 Share Posted June 25, 2019 Make a share on the cache or set the Transcode share to use the Cache? Quote Link to comment
testdasi Posted June 25, 2019 Share Posted June 25, 2019 48 minutes ago, presence06 said: Make a share on the cache or set the Transcode share to use the Cache? No need that complicated. Just map a folder in appdata (which should be on cache) to Plex and use it for transcode temp. 1 Quote Link to comment
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