This repository contains features generated from publicly available block traces using a python block trace analysis framework, pyCydonia
- CloudPhysics
- Tencent
- MSR
Given a block trace, size of a Logical Block Address (LBA) and the size of a page the following features are generated for each 30 minute interval.
| Feature | Unit | Status | Description |
|---|---|---|---|
| block_req_count | - | Done | number of block requests |
| read_block_req_count | - | Done | number of read block requests |
| write_block_req_count | - | Done | number of write block requests |
| write_block_req_split | - | Done | fraction of block requests that were writes |
| io_request_size_sum | byte | Done | total IO requested |
| read_io_request_size_sum | byte | Done | total read IO requested |
| write_io_request_size_sum | byte | Done | total write IO requested |
| write_io_request_size_split | byte | Done | fraction of IO that were writes |
| page_access_count | - | Done | number of pages accessed |
| read_page_access_count | - | Done | pages read |
| write_page_access_count | - | Done | pages written |
| write_page_access_split | - | Done | fraction of pages accessed that were writes |
| seq_count | - | Done | number of sequential block requests |
| read_seq_count | - | Done | number of sequential read block requests |
| write_seq_count | - | Done | number of sequential write block requests |
| write_seq_split | - | Done | fraction of sequential block requests that are writes |
| range | byte | Done | difference between the maximum and minimum byte offset accessed |
| read_range | byte | Done | difference between the maximum and minimum byte offset read |
| write_range | byte | Done | difference between the maximum and minimum byte offset written |
| misalignment_sum | byte | Done | the sum of bytes by which block requests were not page aligned |
| read_misalignment_sum | byte | Done | the sum of bytes by which read block requests were not page aligned |
| write_misalignment_sum | byte | Done | the sum of bytes by which write block requests were not page aligned |
| page_working_set_size | byte | Done | the size of the set of unique pages accessed |
| read_page_working_set_size | byte | Done | the size of the set of unique pages read |
| write_page_working_set_size | byte | Done | the size of the set of unique pages written |
| write_page_working_set_size_split | - | Done | fraction of the working set size where data is written |
| p_read_page_popularity | - | Done | Percentiles(p)={1,5,10 .. 100} of the popularity of top-N% popular read pages |
| p_write_page_popularity | - | Done | Percentiles(p)={1,5,10 .. 100} of the popularity of top-N% popular write pages |
| p_read_block_request_size | byte | Done | Percentiles(p)={1,5,10 .. 100} of read block request sizes |
| p_write_block_request_size | byte | Done | Percentiles(p)={1,5,10 .. 100} of write block request sizes |
| p_jump_distance | byte | Done | Percentiles(p)={1,5,10 .. 100} of the jump distance between block requests |
| p_scan_length | - | Done | Percentiles(p)={1,5,10 .. 100} of the length of scans (new item or cache writes) |
| p_delta_read_page_popularity | - | Done | Percentiles(p)={1,5,10 .. 100} of the change in popularity of pages from previous window |
| p_delta_write_page_popularity | - | Done | Percentiles(p)={1,5,10 .. 100} of the change in popularity of pages from previous window |