To stop after 10 count, use the -c option: $ ioping -c 10. Install IOPing on CentOS 7: $ sudo yum install epel-release Install IOPing on Ubuntu: $ sudo apt-get install ioping To measure your disks I/O latency you can use IOPing tool. To perform randwrite instead of randread: fio -randrepeat=1 -ioengine=libaio -direct=1 -gtod_reduce=1 -name=test -filename=test -bs=4k -iodepth=64 -size=4G -readwrite=randwriteĭo not forget delete test files, because Fio creates temporary files for disk performance measurement. ![]() To measure random read IOPS use command: fio -randrepeat=1 -ioengine=libaio -direct=1 -gtod_reduce=1 -name=test -filename=test -bs=4k -iodepth=64 -size=4G -readwrite=randread My disk performance: 10889 read operations per second (IOPS) and 3630 write operations per second. The 3:1 ratio is a rough approximation of your typical database. This command will create a 4 GB file, and perform 4KB reads and writes using a 75%/25%, with 64 operations running at a time. Random read/write performance: fio -randrepeat=1 -ioengine=libaio -direct=1 -gtod_reduce=1 -name=test -filename=test -bs=4k -iodepth=64 -size=4G -readwrite=randrw -rwmixread=75 $ sudo yum install fio Measuring random IOPS with FIO Examples Install Fio on CentOS 7: $ sudo yum install epel-release Install Fio on Ubuntu: $ sudo apt-get install fio ![]() IOPS (Input/Output Operations Per Second) is a common performance measurement used to benchmark computer storage devices like hard disk drives (HDD), solid state drives (SSD), and storage area networks (SAN). The Fio is one of the best disk performance and benchmarking utility for Linux. There's already two other threads where I've looked up the models from suppliers who've published specificationsĮxact page layout and set-up, writing, numbers etc.How To Measure Disk Performance IOPS With Fio in Linux but they aren't going to actually see that speed in real world workloads, and certainly aren't going to sustain that speed in real world workloads. The 512GB versions of the Phison and Kingston will show up to ~2400MB/s seq read in synthetic benchmarks like CrystalDiskMark, ATTO, etc. The ESMP256GKB4C3-E13TS SSD which uses a version of that controller is a custom SSD model from Phison for Valve as they don't even list M.2 2230 as a supported form factor for the PS5013-E13T. They are for the PS5013-E13T PCIe Gen3 x4 interface with 4 NAND channel SSD controller. But that doesn't mean an SSD using that controller will magically have those speeds.Į13T has R 1730 / w 1180MB/s, nothing crazyĪgain, neither of those links are for an SSD. ![]() The PS5013-E13T is an SSD controller, and it is capable of 2500MB/s seq read and 2100MB/s seq writes. You must not understand the difference between an SSD and an SSD controller, nor what the words up to mean. Write speed (CrystalDiskMark, up to): 1000 MB/s Read speed (CrystalDiskMark, up to): 1700 MB/s Memory cell type: 3D NAND flash w/ SLC caching The "new" PCIe Gen3 x2 SSD that is now also shipping in the Steam Deck is a custom Valve firmware version of a Transcend MTE352T, ![]() There doesn't appear to be publicly available specifications for the Phison model, however, the Kingston model has the following specifications. Originally posted by PopinFRESH:There have been two 256GB PCIe Gen3 x4 SSDs shipping in the Steam Deck: Kingston OM3PDP3256B-A01 and a custom Phison model ESMP256GKB4C3-E13TS.
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