Date: Mon, 4 Mar 2024 16:36:09 +0100 From: Andrea Venturoli <ml@netfence.it> To: Daniel Feenberg <feenberg@nber.org> Cc: freebsd-questions@freebsd.org Subject: Re: ZFS ARC memory requirements Message-ID: <1ade48e8-61b3-44b8-a36f-18fb6c0be1a0@netfence.it> In-Reply-To: <83a5e3e2-a211-c524-1c8f-700802d148f@nber.org> References: <7f7a9f1f-8a2b-41ef-a6a7-1dc1e2f160af@netfence.it> <83a5e3e2-a211-c524-1c8f-700802d148f@nber.org>
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On 3/4/24 15:17, Daniel Feenberg wrote: > We have a number of large ZFS stores used for both production and > backup. Most have 64GB and that seems more than enough. We use > compression, but do not do de-duplication. Thanks (and to Mike too). > I believe the advice you have > read accounts for de-duplication, which is memory-intensive. No. The handbook (among others) says 1GB/TB without dedup and 5GB/TB with dedup. bye av.
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