slw

I am try this on ThinkBook 14 G6+ IM ``` vgapci0@pci0:0:2:0: class=0x030000 rev=0x08 hdr=0x00 vendor=0x8086 device=0x7d55 subvendor=0x17aa subdevice=0x384c vendor = 'Intel Corporation' device = 'Meteor Lake-P [Intel Arc Graphics]' class...

hw.i915kms.enable_guc=0 and kldload i915kms got a panic. core.txt attached [core.txt](https://github.com/user-attachments/files/19707273/core.txt)

> @slw I saw that panic (`address %p(%p) has not been allocated`) on my Meteor Lake as well, immediately upon load. Sometimes that panic, sometimes the `did not belong to...

Compressed ARC have huge (x4) performance penalty in some cases: https://blog.lexa.ru/2019/05/10/zfs_vfszfscompressed_arc_enabled0.html Please, don't remove control of this!

On Fri, May 10, 2019 at 06:57:40AM -0700, ptx0 wrote: > better to open an issue and resolve your performance than it is to > make them leave compressed arc...

On Fri, May 10, 2019 at 12:43:58PM -0700, Matthew Ahrens wrote: > @slw Compressed ARC should not have a huge performance impact > compared to uncompressed ARC. It sounds like...

On Sat, May 11, 2019 at 07:36:40AM -0700, Richard Elling wrote: > Compressed ARC should have no impact on uncompressible data. It > only impacts reads of data that is...