MrCroxx

Disk Cache Engine	Addressing Pattern
Block-based	(fd, offset, buffer)
Object-based	(key, buffer)

Io Engine	Compatible Devices	Acceptable Addressing Pattern
Psync	FS, File	(fd, offset, buffer)
Uring	FS, File	(fd, offset, buffer)

MrCroxx

#!/usr/bin/env ./venv/bin/python

import json
import os
import subprocess
import sys
from pathlib import Path

# Automatically generate the latest qbt_files.json each run
subprocess.run(["qbt", "torrent", "list", "--format", "json"], stdout=open("qbt_files.json", "w"))

MrCroxx

// Copyright 2025 foyer Project Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

MrCroxx

#!/bin/bash

set -ueo pipefail

TEST_DIR=$1
echo "benchmark disk mounted on" $TEST_DIR

echo "--> write throughput"
sudo fio --name=write_throughput --directory=$TEST_DIR --numjobs=8 \
         --size=10G --time_based --runtime=60s --ramp_time=2s --ioengine=libaio \

MrCroxx

> ~/github/tsuna/contextswitch make all                                                                                                                                                                                 ✔  mrcroxx@homelab  05:55:12  
gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror  -lrt -lpthread  timectxsw.c   -o timectxsw
gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror  -lrt -lpthread  timectxswws.c   -o timectxswws
gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror  -lrt -lpthread  timesyscall.c   -o timesyscall
gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror  -lrt -lpthread  timetctxsw.c   -o timetctxsw
gcc -pthread -march=native -O3 -mno-avx -D_XOPEN_SOURCE=600 -D_GNU_SOURCE -std=c99 -W -Wall -Werror  -lrt -lpthread  timetctxsw2.c   -o timetctxsw2
./cpubench.sh
model name : AMD Ryzen 9 

MrCroxx

     Running benches/chained_spawn.rs (target/release/deps/chained_spawn-c8dc8c936ec4fa3d)
Gnuplot not found, using plotters backend
chained_spawn/yatp::future/256
                        time:   [684.35 µs 684.77 µs 685.25 µs]
Found 4 outliers among 100 measurements (4.00%)
  3 (3.00%) high mild
  1 (1.00%) high severe
chained_spawn/yatp::callback/256
                        time:   [550.01 µs 551.86 µs 553.61 µs]

MrCroxx

use std::time::{Duration, Instant};

use bcc::perf_event::PerfMapBuilder;
use bcc::{BccError, Kprobe, Kretprobe, BPF};
use itertools::Itertools;
use tokio::fs::read_to_string;
use tokio::sync::oneshot;

use crate::Args;

MrCroxx

rm -rf /p44pro/foyer && cargo build --release && RUST_BACKTRACE=1 RUST_LOG=warn ./target/release/foyer-storage-bench --dir /p44pro/foyer --capacity 102400 --file-size 64 --get-range 10000 --flushers 12 --reclaimers 12 --time 60 --writers 64 --w-rate 8 --ticket-insert-rate-limit 500 --readers 1024 --r-rate 1 --runtime --metrics --compression none --distribution zipf --distribution-zipf-s 0.8 --disable-direct

Total:
disk total iops: 1818.0
disk total throughput: 402.4 MiB/s
disk read iops: 90.5
disk read throughput: 6.3 MiB/s

MrCroxx

use std::{
    hint::black_box,
    sync::{
        atomic::{AtomicUsize, Ordering},
        Arc,
    },
    time::{Duration, Instant},
};

use itertools::Itertools;

MrCroxx

use std::{collections::HashMap, fs::File, path::Path};

use csv::StringRecord;
use itertools::Itertools;

fn open(path: impl AsRef<Path>) -> Vec<StringRecord> {
    let f = File::open(path).unwrap();
    let mut reader = csv::Reader::from_reader(f);
    let headers = reader.headers().cloned().unwrap();
    let records = reader.records().map(|res| res.unwrap()).collect_vec();