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Are arc tuneables read during runtime? #299
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If you want to change things dynamically (without rebooting), you can use the kstat tool; |
I have tried using the command |
the zfs_arc_max is the write variable - then you read the new value from the other arc_max variable - i dont know why they split them. There is also a variable to simulate memory pressure - to make arc deflate |
I assume you mean the other values are c, c_min, c_max
Up until this point it appears nothing has changed (on my system ZFS still using ~16GB of ram) I tried to update the Do you want me to write up something for the wiki? |
I have been running ZFSin for a bit over two weeks and I've noticed that it consumes a huge chunk of my memory (20GB) without any way for me to reduce the amount. I have tried to set the zfs_arc_max to a much lower figure (500MB) and it appears that it's not honored. I have now adjusted it using the registry settings.
I expect that the answer would be to export and then reimport though I have had bluescreens the last few times I've tried to do this.
I noticed there was a similar issue occurring with ZFS openzfs/zfs#8463 though that code block doesn't appear to exist in ZFSin.
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