1 # Size distributions for memory functions under specific workloads
3 This folder contains a set of files that are included from `libc/benchmarks/MemorySizeDistributions.cpp`.
5 Offloading this data to individual files helps
6 - C++ editors (large arrays are usually not well handled by editors),
7 - and allows processing data by other tools to perform analysis or graph rendering.
11 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.
12 - `"0,1"` indicates that only the size `1` occurs,
13 - `"0.5,0.5"` indicates sizes `0` and `1` occur with the same frequency.
15 These files usually contains sizes from `0` to `4096` inclusive. To save on space trailing zeros are discarded.
19 As identified in the [automemcpy](https://research.google/pubs/pub50338/) paper:
20 - `GoogleA` <-> `service 4`
21 - `GoogleB` <-> `database 1`
22 - `GoogleD` <-> `storage`
23 - `GoogleL` <-> `logging`
24 - `GoogleM` <-> `service 2`
25 - `GoogleQ` <-> `database 2`
26 - `GoogleS` <-> `database 3`
27 - `GoogleU` <-> `service 3`
28 - `GoogleW` <-> `service 1`
30 `Uniform384To4096` is an additional synthetic workload that simply returns a uniform repartition of the sizes from `384` to `4096` inclusive.
34 Except for `GoogleD`, all distributions are gathered over one week worth of data.