From: "Emilio G. Cota" <cota@braap.org>
To: Richard Henderson <richard.henderson@linaro.org>
Cc: qemu-devel@nongnu.org, peter.maydell@linaro.org, alex.bennee@linaro.org
Subject: Re: [Qemu-devel] [PATCH v3 0/3] target/arm: Reduce overhead of cpu_get_tb_cpu_state
Date: Fri, 1 Mar 2019 20:49:21 -0500 [thread overview]
Message-ID: <20190302014921.GA5081@flamenco> (raw)
In-Reply-To: <20190222024106.9167-1-richard.henderson@linaro.org>
On Thu, Feb 21, 2019 at 18:41:03 -0800, Richard Henderson wrote:
> Changes since v2:
> * Do not cache VECLEN, VECSTRIDE, VFPEN.
> These variables come from VFP_FPSCR and VFP_FPEXC, not from
> system control registers.
> * Move HANDLER and STACKCHECK to rebuild_hflags_a32,
> instead of building them in rebuild_hflags_common.
Tested-by: Emilio G. Cota <cota@braap.org>
You might want to add these numbers (I re-ran the benchmarks for v3)
to patch 3's commit log:
aarch64-linux-user SPEC06int (train set)
Host: Intel(R) Core(TM) i7-4790K CPU @ 4.00GHz
2.2 +--------------------------------------------------------------+
| |
| after |
2 |-+.........................................+-+..............+-|
| | |
| *|* |
| *|* +-+ |
1.8 |-+..........+-+............................+-+.......|......+-|
| | * * | |
| **|* +-+ *+-+ * * *|* |
1.6 |-+.........*+-+..............**|*.....*..*.*.*.*+-+.*|*.....+-|
| * * *+-+ * * * * *+-+ *|* |
| * * * * * * * * * * +-+ |
1.4 |-+.........*..*......+-+.....*..*.....*..*.*.*.*..*.*.*.*+-++-|
| * * **|* * * * * * * * * * * *+-+ |
| *+-+ * * *+-+ * * * * * * * * * * * * |
1.2 |-+*+-+.....*..*.....*..*.....*..*.....*..*.*.*.*..*.*.*.*..*+-|
| * * +-+ * * * * +-+ * * * * * * * * * * * * |
| * * | * * +-+ * * +-+ * * +-+ * * * * * * * * * * |
| * * *|* * * *|* * * * * * * +-+ * * * * * * * * * * |
1 |++*++*++-++*++*++-++*++*+*+*+*++*+*+*+*++*+*+*+*++*+*+*+*++*++|
| * * * * * * * * * * * * * * * * * * * * * * * * * * |
| * * * * * * * * * * * * * * * * * * * * * * * * * * |
0.8 +--------------------------------------------------------------+
400.perl401.bzi403.429445.456.462.libq464.471.omn483.xalancbgeomean
png: https://imgur.com/wr4ODMw
Thanks,
Emilio
next prev parent reply other threads:[~2019-03-02 1:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-22 2:41 [Qemu-devel] [PATCH v3 0/3] target/arm: Reduce overhead of cpu_get_tb_cpu_state Richard Henderson
2019-02-22 2:41 ` [Qemu-devel] [PATCH v3 1/3] target/arm: Split out recompute_hflags et al Richard Henderson
2019-02-22 2:41 ` [Qemu-devel] [PATCH v3 2/3] target/arm: Rebuild hflags at el changes and MSR writes Richard Henderson
2019-02-22 2:41 ` [Qemu-devel] [PATCH v3 3/3] target/arm: Rely on hflags correct in cpu_get_tb_cpu_state Richard Henderson
2019-02-22 14:05 ` [Qemu-devel] [PATCH v3 0/3] target/arm: Reduce overhead of cpu_get_tb_cpu_state Alex Bennée
2019-02-22 14:45 ` Richard Henderson
2019-02-27 15:43 ` no-reply
2019-02-27 17:51 ` no-reply
2019-03-02 1:49 ` Emilio G. Cota [this message]
2019-03-02 1:58 ` no-reply
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