Name
Abstract | ||
|---|---|---|
Track-aligned extents (traxtents) utilize disk-specific knowledge to match access patterns to the strengths of modern disks. By allocating and accessing related data on disk track boundaries, a system can avoid most rotational latency and track crossing overheads. Avoiding these overheads can increase disk access efficiency by up to 50% for mid-sized requests (100-500KB). This paper describes traxtents, algorithms for detecting track boundaries, and some uses of traxtents in file systems and video servers. For large-file workloads, a version of FreeBSD's FFS implementation that exploits traxtents reduces application run times by up to 20% compared to the original version. A video server using traxtent-based requests can support 56% more concurrent streams at the same startup latency and buffer space. For LFS, 44% lower overall write cost for track-sized segments can be achieved. |
Year | Venue | Keywords |
|---|---|---|
2002 | FAST | disk drive characteristic,disk access efficiency,modern disk,rotational latency,video server,access pattern,track-aligned extents,access patterns,disk track boundary,startup latency,disk drive characteristics,track boundary,track-aligned extent,original version,ffs implementation,relational data |
Field | DocType | ISBN |
Video server,Latency (engineering),Computer science,Server,Real-time computing,Exploit,Operating system,Overhead (business) | Conference | 1-880446-03-0 |
Citations | PageRank | References |
85 | 3.79 | 32 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jiri Schindler | 1 | 411 | 26.82 |
| John Linwood Griffin | 2 | 476 | 35.66 |
| Christopher R. Lumb | 3 | 328 | 21.27 |
| Gregory R. Ganger | 4 | 4560 | 383.16 |