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dancrossnyc
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Nov 5, 2026
acfoltzer
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Aha, it's good to know these kinds of memory considerations are important in these scripts
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I was running this script on a busy host yesterday and it kept dropping
data because the dynamic variable space was exhausted. The problem is
that
fbt::svm_vmexit:entryis copying the whole ofvmcb->ctrlandvmcb->stateinto thread locals on every VM exit - that's about 4 KiB.Now that
vmcbis a pointer, we can just avoid doing those copies.