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The 640 MEG Shareware Studio 5
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The 640 Meg Shareware Studio CD-ROM Volume V (Data Express)(1994).ISO
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amiga
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lx103.lha
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BENCH.TXT
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1993-04-24
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114 lines
LX 1.00 Benchmark File
==============================================================================
See bottom of file for benchmarking setup.
A. Test 1
View all archives on DH1:
(29 -lh5- archives, totalling 8 MB)
Utility Version Time (sec) Command line
------- ------- ---------- ------------
1. LV 1.00 12.07 LV >nil: -q dh1:#?
2. LhA 1.38 12.07 LhA >nil: -q v dh1:#?
3. LX/020 1.00 12.10 LX020 >nil: -q v dh1:#?
4. LX 1.00 12.14 LX >nil: -q v dh1:#?
5. LZ 1.92 13.38 LZ >nil: -N v dh1:#?
Comments: As you can see, LV, LhA, LX and LX/020 operate at almost exactly the
same speed for the viewing operation.
B. Test 2
Test all files in archives on DH1:
(29 -lh5- archives, totalling 8 MB)
Utility Version Time (sec) Options
------- ------- ---------- -------
1. LX/020 1.00 92.45 LX020 >nil: -q t
2. LX 1.00 95.23 LX >nil: -q t
3. LhA 1.38 103.72 LhA >nil: -q t
4. LZ 1.92 115.67 LZ >nil: -N t
Comments: LX and LX/020 show their speed, a combination of optimised assembly
language, and asynchronous disk i/o.
C. Test 3
Test one large file in RAM:
(410K archived, 1500K decompressed, -lh5-)
Utility Version Time (sec) Options
------- ------- ---------- -------
1. LX/020 1.00 4.93 LX020 >nil: -q t
2. LX 1.00 5.35 LX >nil: -q t
3. LhA 1.38 5.42 LhA >nil: -q t
4. LZ 1.92 10.98 LZ >nil: -N t
Comments: Testing entirely in RAM, the asynchronous disk i/o advantage of LX
is nullified, and, in fact, becomes a deficiency, although it
remains faster than LhA.
D. Test 4
Test one large file in RAM:
(410K archived, 1500K decompressed, -lh1-)
Utility Version Time (sec) Options
------- ------- ---------- -------
1. LX/020 1.00 12.25 LX020 >nil: -q t
2. LX 1.00 12.75 LX >nil: -q t
3. LhA 1.38 15.34 LhA >nil: -q t
4. LZ 1.92 22.35 LZ >nil: -N t
Comments: LX and LX/020 are far faster at decompressing -lh1- archives.
E. Test 5
Test all files in archives on DF0:
(1 -lh5- archive, total 817K)
Utility Version Time (sec) Options
------- ------- ---------- -------
1. LX 1.00 55.22 LX >nil: -q t
2. LX/020 1.00 55.30 LX020 >nil: -q t
3. LhA 1.38 80.68 LhA >nil: -q t
4. LZ 1.92 96.27 LZ >nil: -N t
Comments: Demonstrates the advantage of LX's asynchronous disk i/o.
As a sidenote, here are the stats for the 'copy' command
(copy the archive from DF0: to RAM:)
Utility Version Time (sec)
------- ------- ----------
Copy 38.1 39.21
==============================================================================
The above benchmarks were performed using:
Amiga 3000 (25 MHz 68030)
6 MB Fast RAM, 2 MB Chip RAM
52 MB Quantum LPS
All archivers and the timing program (RTimer) were in RAM:
All console output was suppressed in all tests.
The computer was re-booted between each test to avoid memory fragmentation.
The Data and Instruction caches of the 68030 were enabled, as was BURST mode
(for both Data and Instructions).
These benchmarks provide a very general idea of the speed improvement of LX
over other archives. Your mileage will vary.
==============================================================================