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8d3acc9235
This adds the util/sysresources package, which currently only contains a function to return the total memory size of the current system. Then, we modify magicsock to scale the number of buffered DERP messages based on the system's available memory, ensuring that we never use a value lower than the previous constant of 32. Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ib763c877de4d0d4ee88869078e7d512f6a3a148d
20 lines
384 B
Go
20 lines
384 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build linux
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package sysresources
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import "golang.org/x/sys/unix"
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func totalMemoryImpl() uint64 {
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var info unix.Sysinfo_t
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if err := unix.Sysinfo(&info); err != nil {
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return 0
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}
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// uint64 casts are required since these might be uint32s
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return uint64(info.Totalram) * uint64(info.Unit)
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}
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