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Groups > linux.kernel > #1599264
| From | Ding Tianhong <dingtianhong@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH] arm64: enable ARCH_WANT_RELAX_ORDER for aarch64 |
| Date | 2017-03-13 13:10 +0100 |
| Message-ID | <tkwXw-jQ-13@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
The ARCH_WANT_RELAX_ORDER will enable Relaxed Ordering (RO) which allows transactions that do not have any order of completion requirements to complete more efficiently compare to the Stricted Ordering (SO) for ixbge nic card. The system will see high write-to-memory performance when RO is enabled on the data transactions just like the SPARC did. The aarch64 pcie controller could both support Relaxed Ordering (RO) and Stricted Ordering (SO), so enable ARCH_WANT_RELAX_ORDER for ixgbe nic card to get much more better performance, and didn't see any adverse effects. Nic Card(Ixgbe) Disable RO | Enable RO Performance(Per thread) 8.4Gb/s | 9.4Gb/s Tested by Iperf on Hip06/Hip07 Soc Board. Signed-off-by: Ding Tianhong <dingtianhong@huawei.com> --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 8c7c244..36249a3 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -115,6 +115,7 @@ config ARM64 select SPARSE_IRQ select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK + select ARCH_WANT_RELAX_ORDER help ARM 64-bit (AArch64) Linux support. -- 1.9.0
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[PATCH] arm64: enable ARCH_WANT_RELAX_ORDER for aarch64 Ding Tianhong <dingtianhong@huawei.com> - 2017-03-13 13:10 +0100 Re: [PATCH] arm64: enable ARCH_WANT_RELAX_ORDER for aarch64 Robin Murphy <robin.murphy@arm.com> - 2017-03-13 14:40 +0100
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