go-ethereum

Commit Graph

Author	SHA1	Message	Date
Martin Holst Swende	dd0d0a2522	slog: faster and less memory-consumption (#28621 ) These changes improves the performance of the non-coloured terminal formatting, _quite a lot_. ``` name old time/op new time/op delta TerminalHandler-8 10.2µs ±15% 5.4µs ± 9% -47.02% (p=0.008 n=5+5) name old alloc/op new alloc/op delta TerminalHandler-8 2.17kB ± 0% 0.40kB ± 0% -81.46% (p=0.008 n=5+5) name old allocs/op new allocs/op delta TerminalHandler-8 33.0 ± 0% 5.0 ± 0% -84.85% (p=0.008 n=5+5) ``` I tried to _somewhat_ organize the commits, but the it might still be a bit chaotic. Some core insights: - The function `terminalHandler.Handl` uses a mutex, and writes all output immediately to 'upstream'. Thus, it can reuse a scratch-buffer every time. - This buffer can be propagated internally, making all the internal formatters either write directly to it, - OR, make use of the `tmp := buf.AvailableBuffer()` in some cases, where a byte buffer "extra capacity" can be temporarily used. - The `slog` package uses `Attr` by value. It makes sense to minimize operating on them, since iterating / collecting into a new slice, iterating again etc causes copy-on-heap. Better to operate on them only once. - If we want to do padding, it's better to copy from a constant `space`-buffer than to invoke `bytes.Repeat` every single time.	12 months ago
jwasinger	28e7371701	all: replace log15 with slog (#28187 ) This PR replaces Geth's logger package (a fork of [log15](https://github.com/inconshreveable/log15)) with an implementation using slog, a logging library included as part of the Go standard library as of Go1.21. Main changes are as follows: * removes any log handlers that were unused in the Geth codebase. * Json, logfmt, and terminal formatters are now slog handlers. * Verbosity level constants are changed to match slog constant values. Internal translation is done to make this opaque to the user and backwards compatible with existing `--verbosity` and `--vmodule` options. * `--log.backtraceat` and `--log.debug` are removed. The external-facing API is largely the same as the existing Geth logger. Logger method signatures remain unchanged. A small semantic difference is that a `Handler` can only be set once per `Logger` and not changed dynamically. This just means that a new logger must be instantiated every time the handler of the root logger is changed. ---- For users of the `go-ethereum/log` module. If you were using this module for your own project, you will need to change the initialization. If you previously did ```golang log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true)))) ``` You now instead need to do ```golang log.SetDefault(log.NewLogger(log.NewTerminalHandlerWithLevel(os.Stderr, log.LevelInfo, true))) ``` See more about reasoning here: https://github.com/ethereum/go-ethereum/issues/28558#issuecomment-1820606613	12 months ago
Felix Lange	0218d7001d	internal/testlog: print file+line number of log call in test log (#20528 ) * internal/testlog: print file+line number of log call in test log This changes the unit test logger to print the actual file and line number of the logging call instead of "testlog.go:44". Output of 'go test -v -run TestServerListen ./p2p' before this change: === RUN TestServerListen --- PASS: TestServerListen (0.00s) testlog.go:44: DEBUG[01-08\|15:16:31.651] UDP listener up addr=127.0.0.1:62678 testlog.go:44: DEBUG[01-08\|15:16:31.651] TCP listener up addr=127.0.0.1:62678 testlog.go:44: TRACE[01-08\|15:16:31.652] Accepted connection addr=127.0.0.1:62679 And after: === RUN TestServerListen --- PASS: TestServerListen (0.00s) server.go:868: DEBUG[01-08\|15:25:35.679] TCP listener up addr=127.0.0.1:62712 server.go:557: DEBUG[01-08\|15:25:35.679] UDP listener up addr=127.0.0.1:62712 server.go:912: TRACE[01-08\|15:25:35.680] Accepted connection addr=127.0.0.1:62713 * internal/testlog: document use of t.Helper	5 years ago
Péter Szilágyi	1a83114c74	all: update author list and licenses	5 years ago
Felix Lange	a43ec8bba5	internal/testlog: add logger for unit tests	6 years ago

5 Commits (3dc071e0367505f4234ef880b853115c4040cfad)