cockroachdb / cockroachdb/cockroach
rpc: undrstand why net.recv.drop doesn't report iptable dropped packets
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A-server-networking
branch-master
C-bug
O-support
P-3
T-kv
- Dominant language
- Go
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Description
During a [recent experiment](https://github.com/cockroachlabs/support/issues/3342#issuecomment-3033932125) that intended to validate the performance of CRDB under packet loss. We saw that the metric didn't account for packets lost using iptable (even though the packet drop rate was 1%). The goal of this issue is to understand what `net.recv.drop` exactly report. And if there are cases where packet loss exists, but the metric doesn't report it.
Jira issue: CRDB-52253
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