arc cache

  1. J

    [Suggestion] PVE separate fileds for ram general ram usage and zfs pool ram usage

    Hi all, When using zfs pool for primary storage in pve, it uses nearly total ram for ARC service... I cant predict how much ram left for me, separating ram usage from services that relative to zfs and VM ram usages can solve this problem Thanks
  2. F

    ZFS pool layout and limiting zfs cache size

    Hi All, I have a server with `192G` RAM. I boot it of off a single SSD. I created a ZFS pool composed off 5 x 800GB enterprise SSDs in a `raidz` configuration. This pool is created just to create VMs/containers only and is used for local storage. Now when I checked the zfs summary I see this...
  3. T

    ZFS ARC 64GB Limit realistic performance impact?

    Hi all, have just deployed a new 3 node cluster consisting of 3 dell boxes, each with two 14 core CPU’s, 512GB RAM and 10 SSD’s. I know out of the box ZFS ARC will consume upto half of the hosts memory so 256GB in my case. I also know that this memory is released to other processes when needed...
  4. V

    ARC parameter does not apply

    Hi, We need some help. We have server with: AMD EPYC Ram - 4 TB SSD NVME - 93 TB Debian 10+Proxmox 6.3-3 (5.4.78-2-pve) By default we see: cat /proc/spl/kstat/zfs/arcstats |grep c_ c_min 4 134887443328 c_max 4 2158199093248 When...
  5. V

    zfs arc cache size

    Dear all! I have to plan use a local zfs pool as a my production local_storage. So, I have configure log + cache on a SSD drive. It works very very fast and stable. What about configure ARC size? I have 48GB of RAM From the default setting ARC is: from 32M to 24GB. I want to run about 35 GB...


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