On Fri, Jul 10, 2020 at 07:14:09PM +0200, Vitaly Zaitsev via devel wrote: > On 26.06.2020 16:42, Ben Cotton wrote: > > ** transparent compression: significantly reduces write amplification, > > improves lifespan of storage hardware > > What can you say about this? https://arxiv.org/pdf/1707.08514.pdf Also funny note: when compression was introduced in ZFS, circa 2007, it was mainly promoted as _performance_ win, not a space saving measure. This was still 5 years before NVMe, so all we had was SATA, SAS and FC drives, yet the CPUs were already multi-core and multi-gigahertz. Transfering uncompressed data was _slower_ than compressing/decompressing and having to transfer less data. For a bit higher CPU usage we got noticeable bandwidth wins. The tradeoff is no longer there, as single drives reach 7GiB/s transfer speed. -- Tomasz Torcz Only gods can safely risk perfection, tomek@xxxxxxxxxxxxxx it's a dangerous thing for a man. — Alia _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
