James Tucker b95e8bf4a1 tsweb/varz: export GC CPU fraction gauge
We were missing this metric, but it can be important for some workloads.

Varz memstats output allocation cost reduced from 30 allocs per
invocation to 1 alloc per invocation.

Updates tailscale/corp#28033

Signed-off-by: James Tucker <james@tailscale.com>
Co-authored-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-04-28 11:52:21 -07:00
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