On-the-fly compression in parallel

maxsatula / ocp

Oracle Copy utility

GNU General Public License v2.0

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On-the-fly compression in parallel #19

Open maxsatula opened 9 years ago

maxsatula commented 9 years ago

Download example:

Split a source file on pieces (say 100M each)
UTL_COMPRESS each piece in parallel (with specified limit of sessions, "degree of parallelism")
once a piece is ready, transfer over network and uncompress on-the-fly locally

maxsatula commented 9 years ago

Alternatively (maybe as a separate issue?), TEMP usage can be limited by some command line option (specifying absolute size, % of overall TEMP available, or automatic). This will define how a source file is split by pieces

maxsatula commented 8 years ago

Monitor balance between CPU and network usage

if CPU is idle, increase compression level for further pieces
if network is idle, add more CPU threads or decrease compression level for further pieces