forked from OSchip/llvm-project
34 lines
1.4 KiB
Markdown
34 lines
1.4 KiB
Markdown
# Size distributions for memory functions under specific workloads
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This folder contains a set of files that are included from `libc/benchmarks/MemorySizeDistributions.cpp`.
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Offloading this data to individual files helps
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- C++ editors (large arrays are usually not well handled by editors),
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- and allows processing data by other tools to perform analysis or graph rendering.
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## Format
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Most filenames are of the form `{MemoryFunctionName}{WorkloadID}.csv`. They contain a single line of comma separated real values representing the probability that a particular size occurs. e.g.
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- `"0,1"` indicates that only the size `1` occurs,
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- `"0.5,0.5"` indicates sizes `0` and `1` occur with the same frequency.
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These files usually contains sizes from `0` to `4096` inclusive. To save on space trailing zeros are discarded.
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## Workloads
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As identified in the [automemcpy](https://research.google/pubs/pub50338/) paper:
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- `GoogleA` <-> `service 4`
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- `GoogleB` <-> `database 1`
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- `GoogleD` <-> `storage`
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- `GoogleL` <-> `logging`
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- `GoogleM` <-> `service 2`
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- `GoogleQ` <-> `database 2`
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- `GoogleS` <-> `database 3`
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- `GoogleU` <-> `service 3`
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- `GoogleW` <-> `service 1`
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`Uniform384To4096` is an additional synthetic workload that simply returns a uniform repartition of the sizes from `384` to `4096` inclusive.
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## Note
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Except for `GoogleD`, all distributions are gathered over one week worth of data. |