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Re: [Qemu-devel] [RFC 6/6] cputlb: dynamically resize TLBs based on use
From: |
Emilio G. Cota |
Subject: |
Re: [Qemu-devel] [RFC 6/6] cputlb: dynamically resize TLBs based on use rate |
Date: |
Mon, 8 Oct 2018 09:46:16 -0400 |
User-agent: |
Mutt/1.9.4 (2018-02-28) |
On Sun, Oct 07, 2018 at 21:48:34 -0400, Emilio G. Cota wrote:
> - 70/40% use rate for growing/shrinking the TLB does not
> seem a great choice, if one wants to avoid a pathological
> case that can induce constant resizing. Imagine we got
> exactly 70% use rate, and all TLB misses were compulsory
> (i.e. a direct-mapped TLB would have not prevented a
^^^
> single miss). We'd then double the TLB size:
I meant fully associative.
E.
- [Qemu-devel] [RFC 0/6] Dynamic TLB sizing, Emilio G. Cota, 2018/10/06
- [Qemu-devel] [RFC 4/6] tcg: define TCG_TARGET_TLB_MAX_INDEX_BITS, Emilio G. Cota, 2018/10/06
- [Qemu-devel] [RFC 3/6] cputlb: track TLB use rates, Emilio G. Cota, 2018/10/06
- [Qemu-devel] [RFC 5/6] cpu-defs: define MIN_CPU_TLB_SIZE, Emilio G. Cota, 2018/10/06
- [Qemu-devel] [RFC 6/6] cputlb: dynamically resize TLBs based on use rate, Emilio G. Cota, 2018/10/06
- Re: [Qemu-devel] [RFC 6/6] cputlb: dynamically resize TLBs based on use rate, Richard Henderson, 2018/10/07
- [Qemu-devel] [RFC 2/6] cputlb: do not evict invalid entries to the vtlb, Emilio G. Cota, 2018/10/06
[Qemu-devel] [RFC 1/6] (XXX) cputlb: separate MMU allocation + run-time sizing, Emilio G. Cota, 2018/10/06