<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" xmlns:media="http://search.yahoo.com/mrss/"><channel><title>ext4 on Shaowen Chen's Website</title><link>https://www.chenshaowen.com/en/tags/ext4/</link><description>Recent content in ext4 on Shaowen Chen's Website</description><generator>Hugo -- gohugo.io</generator><language>en</language><copyright>&amp;copy;2016 - {year}, All Rights Reserved.</copyright><lastBuildDate>Mon, 06 Oct 2025 00:00:00 +0000</lastBuildDate><sy:updatePeriod>weekly</sy:updatePeriod><atom:link href="https://www.chenshaowen.com/en/tags/ext4/atom.xml" rel="self" type="application/rss+xml"/><item><title>Performance Test of ext4, xfs, zfs, and btrfs under RAID6</title><link>https://www.chenshaowen.com/en/blog/ext4-xfs-zfs-btrfs-performance-test-in-raid6.html</link><pubDate>Mon, 06 Oct 2025 00:00:00 +0000</pubDate><atom:modified>Mon, 06 Oct 2025 00:00:00 +0000</atom:modified><guid>https://www.chenshaowen.com/en/blog/ext4-xfs-zfs-btrfs-performance-test-in-raid6.html</guid><description>1. Single Disk 1.1 Creating the File System Wipe the disk 1 wipefs -a /dev/nvme0n1 Format the disk 1 mkfs.xfs /dev/nvme0n1 Mount the disk 1 2 mkdir -p /mnt/nvme0n1-test mount /dev/nvme0n1 /mnt/nvme0n1-test 1.2 Performance Test 4k random write 1 2 3 4 echo 3 &amp;gt; /proc/sys/vm/drop_caches fio --name=4k_randwrite --rw=randwrite --bs=4k --ioengine=libaio --direct=1 \ --numjobs=8 --iodepth=32 --size=20G --time_based --runtime=120 --group_reporting \ --allow_mounted_write=1 --filename=/mnt/nvme0n1-test/fio-4k-randwrite.</description><dc:creator>微信公众号</dc:creator><category>Filesystem</category><category>ext4</category><category>xfs</category><category>zfs</category><category>btrfs</category><category>RAID</category><category>Storage</category><category>Performance Testing</category><category>Operations</category></item></channel></rss>