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DOSE-21 hit-rate-per-size reporting (openzfs#9)
Add a new hit-by-size histogram to zettacache that is updated whenever there is a successful lookup (for read). This captures the minimum cache size that would contain this block. Add a new command (zcache) that has subcommands to display and clear the new histogram.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -13,6 +13,7 @@ members = [ | |
| "object_perf", | ||
| "server", | ||
| "util", | ||
| "zcache", | ||
| "zcdb", | ||
| "zettacache", | ||
| "zettaobject", | ||
|
|
||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| use lazy_static::lazy_static; | ||
| use log::*; | ||
| use log4rs::append::console::ConsoleAppender; | ||
| use log4rs::append::file::FileAppender; | ||
| use log4rs::config::Logger; | ||
| use log4rs::config::{Appender, Config, Root}; | ||
| use log4rs::encode::pattern::PatternEncoder; | ||
|
|
||
| lazy_static! { | ||
| static ref LOG_PATTERN: String = "[{d(%Y-%m-%d %H:%M:%S%.3f)}][{t}][{l}] {m}{n}".to_string(); | ||
| } | ||
|
|
||
| pub fn get_logging_level(verbosity: u64) -> LevelFilter { | ||
| match verbosity { | ||
| 0 => LevelFilter::Warn, | ||
| 1 => LevelFilter::Info, | ||
| 2 => LevelFilter::Debug, | ||
| _ => LevelFilter::Trace, | ||
| } | ||
| } | ||
|
|
||
| fn setup_console_logging(verbosity: u64) { | ||
| let config = Config::builder() | ||
| .appender( | ||
| Appender::builder().build( | ||
| "stdout", | ||
| Box::new( | ||
| ConsoleAppender::builder() | ||
| .encoder(Box::new(PatternEncoder::new(&*LOG_PATTERN))) | ||
| .build(), | ||
| ), | ||
| ), | ||
| ) | ||
| // rusoto_core::request is very chatty when set to debug. So, set it to info. | ||
| .logger(Logger::builder().build("rusoto_core::request", LevelFilter::Info)) | ||
| .build( | ||
| Root::builder() | ||
| .appender("stdout") | ||
| .build(get_logging_level(verbosity)), | ||
| ) | ||
| .unwrap(); | ||
|
|
||
| log4rs::init_config(config).unwrap(); | ||
| } | ||
|
|
||
| fn setup_logfile(verbosity: u64, logfile: &str) { | ||
| let config = Config::builder() | ||
| .appender( | ||
| Appender::builder().build( | ||
| "logfile", | ||
| Box::new( | ||
| FileAppender::builder() | ||
| .encoder(Box::new(PatternEncoder::new(&*LOG_PATTERN))) | ||
| .build(logfile) | ||
| .unwrap(), | ||
| ), | ||
| ), | ||
| ) | ||
| // rusoto_core::request is very chatty when set to debug. So, set it to info. | ||
| .logger(Logger::builder().build("rusoto_core::request", LevelFilter::Info)) | ||
| .build( | ||
| Root::builder() | ||
| .appender("logfile") | ||
| .build(get_logging_level(verbosity)), | ||
| ) | ||
| .unwrap(); | ||
|
|
||
| log4rs::init_config(config).unwrap(); | ||
| } | ||
|
|
||
| pub fn setup_logging(verbosity: u64, file_name: Option<&str>, log_config: Option<&str>) { | ||
| match log_config { | ||
| Some(config) => { | ||
| log4rs::init_file(config, Default::default()).unwrap(); | ||
| } | ||
| None => { | ||
| match file_name { | ||
| Some(logfile) => { | ||
| setup_logfile(verbosity, logfile); | ||
| } | ||
| None => { | ||
| /* | ||
| * When neither the log_config nor a log file is specified | ||
| * log to console. | ||
| */ | ||
| setup_console_logging(verbosity); | ||
| } | ||
| } | ||
| } | ||
| }; | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| [package] | ||
| name = "zcache" | ||
| version = "0.1.0" | ||
| authors = ["Delphix"] | ||
| edition = "2021" | ||
|
|
||
| # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html | ||
|
|
||
| [dependencies] | ||
| anyhow = "1.0" | ||
| chrono = "0.4" | ||
| async-trait = "0.1.51" | ||
| clap = "2" | ||
| exitcode = "1.1.2" | ||
| libc = "0.2" | ||
| log = "0.4" | ||
| more-asserts = "0.2.1" | ||
| num-traits = "0.2.14" | ||
| nvpair = { git = "https://github.com/ahrens/rust-libzfs", branch = "work"} | ||
| tokio = { version = "1.4", features = ["full"] } | ||
| util = { path = "../util" } |
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