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Re: [Qemu-devel] [PATCH v4 26/26] tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE
From: |
Aurelien Jarno |
Subject: |
Re: [Qemu-devel] [PATCH v4 26/26] tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE |
Date: |
Wed, 30 Sep 2015 18:50:47 +0200 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
On 2015-09-30 15:09, Richard Henderson wrote:
> At present, the "average" guestimate of TB size is way too small, leading
> to many unused entries in the pre-allocated TB array. For a guest with 1GB
> ram, we're currently allocating 256MB for the array.
>
> Survey arm, alpha, aarch64, ppc, sparc, i686, x86_64 guests running on
> x86_64 and ppc64 hosts and select a new average. The size of the array
> drops to 81MB with no more flushing than before.
>
> Signed-off-by: Richard Henderson <address@hidden>
> ---
> include/exec/exec-all.h | 11 ++++++-----
> 1 file changed, 6 insertions(+), 5 deletions(-)
Reviewed-by: Aurelien Jarno <address@hidden>
--
Aurelien Jarno GPG: 4096R/1DDD8C9B
address@hidden http://www.aurel32.net
- [Qemu-devel] [PATCH v4 23/26] tcg: Emit prologue to the beginning of code_gen_buffer, (continued)
- [Qemu-devel] [PATCH v4 23/26] tcg: Emit prologue to the beginning of code_gen_buffer, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 02/26] target-*: Unconditionally emit tcg_gen_insn_start, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 04/26] target-*: Introduce and use cpu_breakpoint_test, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 07/26] target-i386: Add cc_op state to insn_start, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 14/26] target-sparc: Remove gen_opc_jump_pc, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 17/26] target-*: Drop cpu_gen_code define, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 26/26] tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE, Richard Henderson, 2015/10/08
- Re: [Qemu-devel] [PATCH v4 26/26] tcg: Adjust CODE_GEN_AVG_BLOCK_SIZE,
Aurelien Jarno <=
- [Qemu-devel] [PATCH v4 01/26] tcg: Rename debug_insn_start to insn_start, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 09/26] target-s390x: Add cc_op state to insn_start, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 13/26] target-sparc: Split out gen_branch_n, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 16/26] tcg: Merge cpu_gen_code into tb_gen_code, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 19/26] tcg: Pass data argument to restore_state_to_opc, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 20/26] tcg: Save insn data and use it in cpu_restore_state_from_tb, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 18/26] tcg: Add TCG_MAX_INSNS, Richard Henderson, 2015/10/08
- [Qemu-devel] [PATCH v4 22/26] tcg: Remove tcg_gen_code_search_pc, Richard Henderson, 2015/10/08
- Re: [Qemu-devel] [PATCH v4 00/26] Do away with TB retranslation, Aurelien Jarno, 2015/10/08
- [Qemu-devel] [PATCH v4 03/26] target-*: Increment num_insns immediately after tcg_gen_insn_start, Richard Henderson, 2015/10/08