read_dirty(dc); //根据cached_dev->writeback_keys,从缓存设备读数据,并写到对应后端设备 } } 2. bcache dirty data情况说明 writeback期间,nvme盘每秒读取两百多兆,sdc盘每秒写入两百多兆。那么就是说明writeback每秒是两百多兆。这个正好与dirty_data减少的数量相关 hzwuhongsong@pri3-storage-basic-test1:/...
Ryzen 5950X Slow NVME write speeds With chipset drivers 4.11.15.342 and an SKhynix P41 2tb nvme ssd, I'm getting 7200mbs read speed but only 2400mbs write speed. This is usually a problem with the chipset drivers.0 Likes Reply All...
Speed testThis main script runs each of the above scripts and measures the time taken to run them. It then calculates the throughput by taking the amount of data read/written and dividing by the delay in seconds. Note that each write test ends with a call tosyncto ensure that the write ...
Six months ago I bought a Thinkpad E15 gen 2. It has a native Samsung PM991 NVMe SSD (MZALQ256HAJD-000L1). During the first month of operation, the read/write speed was 2000/1000 MB/s, which is the norm for this SSD. Today I decided to check the speed and...
Ryzen 5950X Slow NVME write speeds With chipset drivers 4.11.15.342 and an SKhynix P41 2tb nvme ssd, I'm getting 7200mbs read speed but only 2400mbs write speed. This is usually a problem with the chipset drivers.0 Likes Reply All...
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Step 2. Type winsat disk -drive c - into the command prompt, wait a few moments, and then examine the output to view the read/write speeds. Checking SSD speed in cmd needs to avoid the wrong parameter errors. If you are unfamiliar with this tool, try EaseUS Partition Master....
I have a Samsung 980 Pro PCI 4 drive and I did a benchmark, and Im getting good read speeds, but very slow write speeds at 1,100 mb. The drive is only 1/3...