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https://github.com/SagerNet/sing-box.git
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b8e5a71450
PreMatch and full match phases each created a fresh InboundContext, causing process search (expensive OS syscalls) to run twice per connection. Use a freelru ShardedLRU cache with 200ms TTL to serve the second lookup from cache.
35 lines
865 B
Go
35 lines
865 B
Go
package route
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import (
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"context"
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"net/netip"
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"github.com/sagernet/sing-box/adapter"
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"github.com/sagernet/sing-box/common/process"
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)
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type processCacheKey struct {
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Network string
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Source netip.AddrPort
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Destination netip.AddrPort
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}
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type processCacheEntry struct {
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result *adapter.ConnectionOwner
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err error
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}
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func (r *Router) findProcessInfoCached(ctx context.Context, network string, source netip.AddrPort, destination netip.AddrPort) (*adapter.ConnectionOwner, error) {
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key := processCacheKey{
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Network: network,
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Source: source,
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Destination: destination,
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}
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if entry, ok := r.processCache.Get(key); ok {
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return entry.result, entry.err
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}
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result, err := process.FindProcessInfo(r.processSearcher, ctx, network, source, destination)
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r.processCache.Add(key, processCacheEntry{result: result, err: err})
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return result, err
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}
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