arc cache

  1. 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...
  2. 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...
  3. 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...
  4. 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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