Comment on Measuring CPU core-to-core latencyparentComments−consp3yMight too-aggressive power saving be an issue? The spikes (100+ns) are all hyper-threads. edit: No, 4 to 6 is not a HT.−vladvasiliu3yI was thinking some kind of throttling, yes. I've always found this particular laptop (HP EliteBook 840 G8) surprisingly slow.If that's the case, I think it kicks in quickly because running this with 500, 5_000 and 50_000 round trips gives results in the same ballpark.There doesn't seem to be any difference between performance and powersave governors for this particular test.
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Might too-aggressive power saving be an issue? The spikes (100+ns) are all hyper-threads. edit: No, 4 to 6 is not a HT.
I was thinking some kind of throttling, yes. I've always found this particular laptop (HP EliteBook 840 G8) surprisingly slow.
If that's the case, I think it kicks in quickly because running this with 500, 5_000 and 50_000 round trips gives results in the same ballpark.
There doesn't seem to be any difference between performance and powersave governors for this particular test.