We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmark Suite

Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by twiddlebits on Monday February 01, 2021 @08:04PM (#25996317)

In my experience, on most SSDs/NVMEs, the firmware GC destroys performance under a heavy read/write load to the point of being no better than a mechanical HD of yore. Except Samsung and Intel. But Intel SSDs have bricked on me a lot. So now I just use Samsung NVMEs exclusively.

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Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by PragmaticPulp on Monday February 01, 2021 @08:35PM (#25996536)

This article tests that. Read down to the "Sequential Drive Fill" section.

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Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by Jon_Lowtek on Tuesday February 02, 2021 @12:40AM (#25997777)

I would love to see some test how SLC caches interact with dmcrypt / mdadm / lvm - there are a lot of old rumors i believe are outdated by now

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Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by the8472 on Tuesday February 02, 2021 @04:14AM (#25998826)

Probably depends on whether you configure your storage layers to pass through TRIM commands.

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Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by Jon_Lowtek on Tuesday February 02, 2021 @08:07AM (#26000504)

yes, that would be my guess, too

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Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by numpad0 on Tuesday February 02, 2021 @03:29AM (#25998534)

The version of explanation I have read is that it's SLC cache getting saturated(same deal as CMR cache region in DM-SMR except read/write can parallelize), and that it won't happen with enough cache amount and fast, parallel writes, so explanation differs but solution sounds right

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Re:We Test PCIe 4.0 Storage: The AnandTech 2021 SSD Benchmar... by mandis on Tuesday February 02, 2021 @12:32AM (#25997729)

interesting. Can you elaborate a bit on the problem? Perf downgrade to the level of HDD is crazy

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