Logging Performance

The following vignette presents benchmarks for log4r against all general-purpose logging packages available on CRAN:

futile.logger and logging, which are well-established packages; and
logger, lgr, and rlog, all of which are relative newcomers.

Each logging package features slightly different capabilities, but these benchmarks are focused on the two situations common to using all of them:

Logging simple messages to the console; and
Deciding not to log a message because it is below the threshold.

The first of these is likely the most common kind of logging done by end users, although some may chose to log to files, over HTTP, or to the system log (among others). Yet a benchmark of these other scenarios would largely show the relative expense of these operations, instead of the overhead of the logic performed by the logging packages themselves.

The second measures the performance impact of leaving logging messages in running code, even if they are below the current threshold of visibility. This is another measure of overhead for each logging package.

Using `cat()`

As a reference point, we can measure how long it takes R itself to write a simple message to the console:

cat_debug <- function() {
  cat() # Print nothing.
}

cat_info <- function() cat(
  "INFO  [", format(Sys.time(), "%Y-%m-%d %H:%M:%S", usetz = FALSE),
  "] Info message.", sep = ""
)

The log4r Package

The following is a typical log4r setup:

log4r_logger <- log4r::logger(threshold = "INFO")

log4r_info <- function() {
  log4r::log_info(log4r_logger, "Info message.")
}

log4r_debug <- function() {
  log4r::log_debug(log4r_logger, "Debug message.")
}

The futile.logger Package

The following is a typical futile.logger setup:

requireNamespace("futile.logger")
#> Loading required namespace: futile.logger

futile.logger::flog.logger()

fl_info <- function() {
  futile.logger::flog.info("Info message.")
}

fl_debug <- function() {
  futile.logger::flog.debug("Debug message.")
}

The logging Package

The following is what I believe to be a typical logging setup:

requireNamespace("logging")
#> Loading required namespace: logging

logging::basicConfig()

logging_info <- function() {
  logging::loginfo("Info message.")
}

logging_debug <- function() {
  logging::logdebug("Debug message.")
}

The logger Package

The following is what I believe to be a typical logger setup:

requireNamespace("logger")
#> Loading required namespace: logger
#> Registered S3 method overwritten by 'logger':
#>   method         from 
#>   print.loglevel log4r

# Match the behaviour of other logging packages and write to the console.
logger::log_appender(logger::appender_stdout)

logger_info <- function() {
  logger::log_info("Info message.")
}

logger_debug <- function() {
  logger::log_debug("Debug message.")
}

The lgr Package

The following is what I believe to be a typical lgr setup:

requireNamespace("lgr")
#> Loading required namespace: lgr

lgr_logger <- lgr::get_logger("perf-test")
lgr_logger$set_appenders(list(cons = lgr::AppenderConsole$new()))
lgr_logger$set_propagate(FALSE)

lgr_info <- function() {
  lgr_logger$info("Info message.")
}

lgr_debug <- function() {
  lgr_logger$debug("Debug message.")
}

The rlog Package

The rlog package currently has no configuration options other than the threshold, which is controlled via an environment variable and defaults to hiding debug-level messages:

requireNamespace("rlog")
#> Loading required namespace: rlog

rlog_info <- function() {
  rlog::log_info("Info message.")
}

rlog_debug <- function() {
  rlog::log_debug("Debug message.")
}

Test All Loggers

Debug messages should print nothing.

log4r_debug()
cat_debug()
logging_debug()
fl_debug()
logger_debug()
lgr_debug()
rlog_debug()

Info messages should print to the console. Small differences in output format are to be expected.

log4r_info()
#> INFO  [2026-08-04 22:51:45] Info message.
cat_info()
#> INFO  [2026-08-04 22:51:45] Info message.
logging_info()
#> 2026-08-04 22:51:45.288525 INFO::Info message.
fl_info()
#> INFO [2026-08-04 22:51:45] Info message.
logger_info()
#> INFO [2026-08-04 22:51:45] Info message.
lgr_info()
rlog_info()
#> 2026-08-04 22:51:45 [INFO] Info message.

Benchmarks

The following benchmarks all loggers defined above:

info_bench <- microbenchmark::microbenchmark(
  cat = cat_info(),
  log4r = log4r_info(),
  futile.logger = fl_info(),
  logging = logging_info(),
  logger = logger_info(),
  lgr = lgr_info(),
  rlog = rlog_info(),
  times = 500,
  control = list(warmups = 50)
)
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:45] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.
#> INFO [2026-08-04 22:51:46] Info message.

debug_bench <- microbenchmark::microbenchmark(
  cat = cat_debug(),
  log4r = log4r_debug(),
  futile.logger = fl_debug(),
  logging = logging_debug(),
  logger = logger_debug(),
  lgr = lgr_debug(),
  rlog = rlog_debug(),
  times = 500,
  control = list(warmups = 50)
)

How long does it take to print messages?

print(info_bench, order = "median")
#> Unit: microseconds
#>           expr     min       lq       mean   median       uq       max
#>          log4r  13.110  21.4720   27.56239  25.2480  31.5570   879.068
#>            cat  22.854  28.0370   37.14363  33.0690  41.3360  1222.489
#>           rlog  37.226  52.5980   63.30895  60.9760  69.6940  1171.924
#>         logger 148.321 193.2220  226.56932 216.7470 230.7880  2454.892
#>        logging 264.333 319.9660  356.75632 344.5730 360.2010  6181.576
#>  futile.logger 413.666 494.9820  527.71194 525.4565 546.4030  2897.951
#>            lgr 850.626 917.0145 1067.31924 941.6310 964.0395 28535.941
#>  neval
#>    500
#>    500
#>    500
#>    500
#>    500
#>    500
#>    500

How long does it take to decide to do nothing?

print(debug_bench, order = "median")
#> Unit: microseconds
#>           expr     min       lq       mean   median       uq      max
#>            cat   1.903   2.2285   4.052566   2.6440   3.0400  687.353
#>          log4r   2.404   2.7040   4.828284   3.2300   3.8655  721.524
#>           rlog   6.560   7.1560   9.845758   8.4225   9.3140  688.985
#>            lgr  11.548  12.4785  16.371230  13.9260  15.3830 1049.121
#>         logger  14.361  15.3480  19.206184  17.0800  19.3440  710.206
#>        logging  15.052  16.0940  20.451482  18.9430  21.0015  693.772
#>  futile.logger 175.821 183.2630 204.206524 188.8160 199.6620 2676.301
#>  neval
#>    500
#>    500
#>    500
#>    500
#>    500
#>    500
#>    500

Updated as of 2026-08-04

Using cat()