Arm Travis jobs run much slower than equivalent jobs on x86

We observed most of Arm jobs run much slower than x86. This is an CI report, including x86 and arm jobs.
https://travis-ci.com/github/MarcoDWei/ovs/builds/152933388?utm_medium=notification&utm_source=email

Some arm jobs cost x2-3 running time than x86 jobs. Is there known resource issue on Arm Travis?
8.6 amd64 KERNEL_LIST=”5.0 4.20 4.19 4.18 4.17 4.16” 8min 3sec
8.27 arm KERNEL_LIST=”5.0 4.20 4.19 4.18 4.17 4.16” 22min 53sec
8.7 amd64 KERNEL_LIST=”4.15 4.14 4.9 4.4 3.19 3.16” 7min 51sec
8.28 arm KERNEL_LIST=”4.15 4.14 4.9 4.4 3.19 3.16” 18min 18sec

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What makes you think it shouldn’t take different time? It’s different hardware, in a different environment, even a different virtualization technology is used.

The ARM64 environment was having problems on Thursday (yesterday). AMD64, PPC64 and s390x were OK.

I think the Travis team got the issue fixed. Or at least I stopped seeing the failures on Friday (today).

Maybe you can restart a failed job and see if the issue is resolved.

Thanks. But I re-run the cases, running time has no change.

Sure, It is reasonable to have different runtimes for different platforms. But I still want to know if there is possibility of improving the time cost for Arm CI.

Is there known resource issue on Arm Travis?

Yes. it’s a known issue. You see some similar “ARM slow” issues on “Multi CPU Architecture” category.

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