Overview
| Comment: | Buffer the input on decompressing, not the decompressor itself. This takes pdc -d < linux-3.18.1.tar.pdc > linux-3.18.1.tar down to 11 seconds from 13 minutes :) |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
4f0d26907d45681fbfce5a00fdfbf391 |
| User & Date: | spaskalev on 2014-12-20 17:44:14 |
| Other Links: | manifest | tags |
Context
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2014-12-21
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| 01:59 | Added a function that reverses the bits in a byte. Coverage: 100.0% of statements. check-in: 2be2ff6bf7 user: spaskalev tags: trunk | |
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2014-12-20
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| 17:44 | Buffer the input on decompressing, not the decompressor itself. This takes pdc -d < linux-3.18.1.tar.pdc > linux-3.18.1.tar down to 11 seconds from 13 minutes :) check-in: 4f0d26907d user: spaskalev tags: trunk | |
| 13:04 | Decompressor might loose part of the underlying buffer array by reslicing, fixed by copy check-in: d516e7425d user: spaskalev tags: trunk | |
Changes
Modified src/0dev.org/commands/pdc/main.go from [3c0c8016e1] to [c6f8b3fe28].
53 53 54 54 // Decompress the data from the given io.Reader and write it to the given io.Writer 55 55 // I/O is buffered for better performance 56 56 func decompress(output io.Writer, input io.Reader) int { 57 57 var ( 58 58 err error 59 59 buffer *bufio.Writer = bufio.NewWriter(output) 60 - decompressor io.Reader = predictor.Decompressor(input) 60 + decompressor io.Reader = predictor.Decompressor(bufio.NewReader(input)) 61 61 ) 62 62 63 - _, err = io.Copy(buffer, bufio.NewReader(decompressor)) 63 + _, err = io.Copy(buffer, decompressor) 64 64 if err != nil { 65 65 fmt.Fprintln(os.Stderr, "Error while decompressing.\n", err) 66 66 return 1 67 67 } 68 68 69 69 // Flush 70 70 err = buffer.Flush()