3rd-party/linux-kernel-module-cheat
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readme: arm gem5 slow fix good commit

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Ciro Santilli
2018-04-17 17:15:43 +01:00
parent 3f1979c1b2
commit 991dd49748
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@@ -4865,7 +4865,7 @@ TODO the following takes more than 1 hour to finish:
cmd ./run -a arm -E 'm5 exit' -g -- --caches --cpu-type=HPI
....
Why so long? I had previously documented on README 10 minutes at: fb317f4778633692b91c9174224dccc6a3a02893 to be confirmed and bisected.
Why so long? I had previously documented on README 10 minutes at: 2eff007f7c3458be240c673c32bb33892a45d3a0 found with `git log` search for `10 minutes`, to be confirmed and bisected. We have a fixed kernel config for gem5, so the only two variables are the Linux kernel version, and the gem5 version.
One methodology problem is that some gem5 and QEMU were run with different kernel configs, due to <<gem5-qemu-config>>. This could have been improved if we normalized by instruction counts, but to do that we would have to enable tracing which makes QEMU run much slower.