Comments (4)
Cachelib doesn't support NVM cache only, you have to specify at least a small portion of DRAM memory.
Can I know why you don't want to use a small memory?
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Cachelib doesn't support NVM cache only, you have to specify at least a small portion of DRAM memory. Can I know why you don't want to use a small memory?
I know that cachelib realizes the seamless connection between DRAM and SSD cache. I want to mainly use SSD cache because cachelib optimizes SSD a lot. For example, if I configure 1T SSD, the size of key is 1024 bytes and the size of value is 1MB. What is the recommended minimum memory?
from cachelib.
Cachelib doesn't support NVM cache only, you have to specify at least a small portion of DRAM memory. Can I know why you don't want to use a small memory?
I know that cachelib realizes the seamless connection between DRAM and SSD cache. I want to mainly use SSD cache because cachelib optimizes SSD a lot. For example, if I configure 1T SSD, the size of key is 1024 bytes and the size of value is 1MB. What is the recommended minimum memory?
I would say at least 10MB, because we have 4MB for a slab + other overhead. But it might not be the best config, you can try it out with our Cachebench tool.
Just FYI, we have a very similar internal use case that treats us as SSD cache, they configs 256MB for DRAM cache.
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thanks!
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