mirror of
https://github.com/matrix-org/dendrite
synced 2024-12-16 04:13:41 +01:00
35 lines
1.5 KiB
Go
35 lines
1.5 KiB
Go
//go:build linux || darwin || netbsd || freebsd || openbsd || solaris || dragonfly || aix
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// +build linux darwin netbsd freebsd openbsd solaris dragonfly aix
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package base
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import (
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"syscall"
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"github.com/sirupsen/logrus"
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)
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func platformSanityChecks() {
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// Dendrite needs a relatively high number of file descriptors in order
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// to function properly, particularly when federating with lots of servers.
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// If we run out of file descriptors, we might run into problems accessing
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// PostgreSQL amongst other things. Complain at startup if we think the
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// number of file descriptors is too low.
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warn := func(rLimit *syscall.Rlimit) {
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logrus.Warnf("IMPORTANT: Process file descriptor limit is currently %d, it is recommended to raise the limit for Dendrite to at least 65535 to avoid issues", rLimit.Cur)
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}
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var rLimit syscall.Rlimit
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if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit); err == nil && rLimit.Cur < 65535 {
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// The file descriptor count is too low. Let's try to raise it.
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rLimit.Cur = 65535
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if err = syscall.Setrlimit(syscall.RLIMIT_NOFILE, &rLimit); err != nil {
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// We failed to raise it, so log an error.
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logrus.WithError(err).Warn("IMPORTANT: Failed to raise the file descriptor limit")
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warn(&rLimit)
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} else if err = syscall.Getrlimit(syscall.RLIMIT_NOFILE, &rLimit); err == nil && rLimit.Cur < 65535 {
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// We think we successfully raised the limit, but a second call to
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// get the limit told us that we didn't succeed. Log an error.
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warn(&rLimit)
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}
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}
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}
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