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https://github.com/kopia/kopia.git
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34da3a2415
Turns out standard ConsoleEncoder is not optimized at all and we're emitting up to 8 log entries per file. This change avoids massive amount of allocations and brings in some latency reduction. Backing up 100k files in a flat directory: duration: current:7.8 baseline:7.9 change:-1.0 % repo_size: current:1019954521.4 baseline:1019976318.9 change:-0.0 % num_files: current:58.0 baseline:58.0 change:0% avg_heap_objects: current:6682141.0 baseline:7508631.3 change:-11.0 % avg_heap_bytes: current:845404672.0 baseline:867325413.9 change:-2.5 % avg_ram: current:156.5 baseline:159.1 change:-1.7 % max_ram: current:278.3 baseline:287.2 change:-3.1 % avg_cpu: current:153.8 baseline:156.4 change:-1.7 % max_cpu: current:298.4 baseline:297.1 change:+0.4 % Backing up Linux 5.18.4: duration: current:3.6 baseline:4.2 change:-14.2 % repo_size: current:1081624213.7 baseline:1081635886.8 change:-0.0 % num_files: current:60.0 baseline:60.0 change:0% avg_heap_objects: current:5180192.3 baseline:5831270.7 change:-11.2 % avg_heap_bytes: current:783468754.2 baseline:804350042.1 change:-2.6 % avg_ram: current:239.0 baseline:240.6 change:-0.6 % max_ram: current:384.8 baseline:368.0 change:+4.6 % avg_cpu: current:259.8 baseline:230.8 change:+12.6 % max_cpu: current:321.6 baseline:303.9 change:+5.9 %
37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
// Package logging provides loggers for Kopia.
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package logging
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import (
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"context"
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"io"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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"github.com/kopia/kopia/internal/zaplogutil"
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)
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// Logger is used by Kopia to emit various logs.
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type Logger = *zap.SugaredLogger
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// LoggerFactory retrieves a named logger for a given module.
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type LoggerFactory func(module string) Logger
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// Module returns an function that returns a logger for a given module when provided with a context.
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func Module(module string) func(ctx context.Context) Logger {
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return func(ctx context.Context) Logger {
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if l := ctx.Value(loggerCacheKey); l != nil {
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return l.(*loggerCache).getLogger(module) //nolint:forcetypeassert
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}
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return NullLogger
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}
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}
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// ToWriter returns LoggerFactory that uses given writer for log output (unadorned).
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func ToWriter(w io.Writer) LoggerFactory {
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return zap.New(zapcore.NewCore(
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zaplogutil.NewStdConsoleEncoder(zaplogutil.StdConsoleEncoderConfig{}),
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zapcore.AddSync(w), zap.DebugLevel), zap.WithClock(zaplogutil.Clock())).Sugar().Named
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}
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