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Users reporting slow performance, beachballing and glitching. #524

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brendonhumphrey opened this issue Jul 27, 2016 · 1 comment
Closed

Users reporting slow performance, beachballing and glitching. #524

brendonhumphrey opened this issue Jul 27, 2016 · 1 comment

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@brendonhumphrey
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brendonhumphrey commented Jul 27, 2016 •
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Per subject, increasing reports of performance issues in 1.5.2 vice 1.4.5. This is attributed to over optimisation of KMEM_QUANTUM. We now know that the vmem allocator is actually not working, and is exposing the OS allocator to the full bandwidth of requests from kmem, rather than acting as an intermediary.

Fixes are in an experimental branch, which has been demonstrated to run quite will with a 4k KMEM_QUANTUM, but its proving difficult to de-initialise the allocator on kext unload.
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brendonhumphrey commented Jul 27, 2016 •
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openzfsonosx/spl@79d69d3

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