perfsonar / perfsonar/toolkit

MTU probing

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@Rezi1999 is already working on this.

Since Mar 19, 2026.

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Description

Should perfSONAR automatically configure net.ipv4.tcp_mtu_probing equal to 1 or 2.

ESnet fasterdata also recommends setting net.core.optmem_max to 1024K. I have values of 824K (Red Hat default), 1024K and 4096K without noticing any difference.

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