[dpdk-dev] DPDK memory error check and offline bad pages

[Wiles, Keith]

> On Nov 12, 2017, at 11:08 PM, Tan, Jianfeng <jianfeng.tan at intel.com> wrote:
> 
> Hi Jianjian,
> 
>> -----Original Message-----
>> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Jianjian Huo
>> Sent: Wednesday, November 8, 2017 5:13 AM
>> To: dev at dpdk.org
>> Subject: [dpdk-dev] DPDK memory error check and offline bad pages
>> 
>> Hi dpdk developers,
>> 
>> I have a question regarding how DPDK memory module treats memory
>> errors.
> 
> You mean hardware error which cannot be fixed by ECC?
> 
>> 
>> In Linux kernel, it has mechanism (mcelog and EDAC) to monitor the memory
>> controller and report correctable/uncorrectable memory errors. Using some
>> configurations, if memory errors exceed threshold, system can offline bad
>> memory pages and avoid applications to access/crash.
> 
> DPDK app is just one of applications. Are there any framework to notify such error to applications?
> To notify is the first thing, to recover is another thing which takes more effort.
> 
>> Do we have similar mechanism in DPDK?
> 
> No, as far as I know.


Because DPDK runs as a normal user space application in Linux then the current features in the Linux Kernel can be used correct?

> 
> Thanks,
> Jianfeng
> 
>> 
>> Thanks,
>> Jianjian
>> 
> 

Regards,
Keith