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Not involving the CPU makes it orders of magnitude faster if the accesses are sparse, because it doesn't deplete the CPU caches. So from a performance...Last edited by linuxgeex; 13 May 2022, 01:03 PM.
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You're right that swap != memory, even when it is backed by a memory device like NVDIMM or NVMe.
However you're wrong about copying. With...Last edited by linuxgeex; 09 May 2022, 03:03 AM.
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This is long overdue, and at the same time they need to exercise the same consideration for swap-backed memory performance tiers... ie ZRAM, PCIe SSD,...Last edited by linuxgeex; 03 May 2022, 03:07 PM.
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Swap can improve performance even if you have more memory than you need, but only if you have long-lived processes which have large amounts of seldom-touched...Last edited by linuxgeex; 03 May 2022, 02:11 PM.
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You are a braver birdie than I. Once upon a time I used ntfsclone --metadata to preserve the FS structure before making changes and then upon seeing my...Last edited by linuxgeex; 27 April 2022, 04:59 AM.
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You're semi-correct about the memory model. You're right that they switched to little-endian. But they also switched to a 4K page table TLB, and they...
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Good job researching Project Denver. Now finish reading the rest of Wikipedia, in particular the part with this supporting reference: https://semiacc...Last edited by linuxgeex; 26 April 2022, 10:24 PM.
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To be clear, ARM themselves dropped 32-bit instructions in the ARM-V9 ISA, and their hundred-series Cortex product lineup. Having an unused instruction...Last edited by linuxgeex; 18 April 2022, 03:58 AM.
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