98 lines
4.3 KiB
Plaintext
98 lines
4.3 KiB
Plaintext
The following data was generated by the 'timings.sh' script included
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in this directory. It uses a very large table with music-related
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articles as a source for the fti-table. The tables used are:
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product : contains product information : 540.429 rows
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artist_fti : fti table for product : 4.501.321 rows
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clustered : same as above, only clustered : 4.501.321 rows
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A sequential scan of the artist_fti table (and thus also the clustered table)
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takes around 6:16 minutes....
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Unfortunately I cannot probide anybody else with this test-date, since I
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am not allowed to redistribute the data (it's a database being sold by
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a couple of wholesale companies). Anyways, it's megabytes, so you probably
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wouldn't want it in this distribution anyways.
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I haven't tested this with less data.
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The test-machine is a Pentium 133, 64 MB, Linux 2.0.32 with the database
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on a 'QUANTUM BIGFOOT_CY4320A, 4134MB w/67kB Cache, CHS=8960/15/63'. This
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is a very slow disk.
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The postmaster was running with:
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postmaster -i -b /usr/local/pgsql/bin/postgres -S 1024 -B 256 \
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-o -o /usr/local/pgsql/debug-output -F -d 1
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('trashing' means a 'select count(*) from artist_fti' to completely trash
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any disk-caches and buffers....)
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TESTING ON UNCLUSTERED FTI
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trashing
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1: ^lapton and ^ric : 0.050u 0.000s 5m37.484s 0.01%
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2: ^lapton and ^ric : 0.050u 0.030s 5m32.447s 0.02%
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3: ^lapton and ^ric : 0.030u 0.020s 5m28.822s 0.01%
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trashing
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1: ^lling and ^tones : 0.020u 0.030s 0m54.313s 0.09%
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2: ^lling and ^tones : 0.040u 0.030s 0m5.057s 1.38%
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3: ^lling and ^tones : 0.010u 0.050s 0m2.072s 2.89%
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trashing
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1: ^aughan and ^evie : 0.020u 0.030s 0m26.241s 0.19%
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2: ^aughan and ^evie : 0.050u 0.010s 0m1.316s 4.55%
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3: ^aughan and ^evie : 0.030u 0.020s 0m1.029s 4.85%
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trashing
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1: ^lling : 0.040u 0.010s 0m55.104s 0.09%
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2: ^lling : 0.030u 0.030s 0m4.716s 1.27%
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3: ^lling : 0.040u 0.010s 0m2.157s 2.31%
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trashing
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1: ^stev and ^ray and ^vaugh : 0.040u 0.000s 1m5.630s 0.06%
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2: ^stev and ^ray and ^vaugh : 0.050u 0.020s 1m3.561s 0.11%
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3: ^stev and ^ray and ^vaugh : 0.050u 0.010s 1m5.923s 0.09%
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trashing
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1: ^lling (no join) : 0.050u 0.020s 0m24.139s 0.28%
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2: ^lling (no join) : 0.040u 0.040s 0m1.087s 7.35%
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3: ^lling (no join) : 0.020u 0.030s 0m0.772s 6.48%
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trashing
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1: ^vaughan (no join) : 0.040u 0.030s 0m9.075s 0.77%
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2: ^vaughan (no join) : 0.030u 0.010s 0m0.609s 6.56%
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3: ^vaughan (no join) : 0.040u 0.010s 0m0.503s 9.94%
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trashing
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1: ^rol (no join) : 0.020u 0.030s 0m49.898s 0.10%
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2: ^rol (no join) : 0.030u 0.020s 0m3.136s 1.59%
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3: ^rol (no join) : 0.030u 0.020s 0m1.231s 4.06%
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TESTING ON CLUSTERED FTI
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trashing
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1: ^lapton and ^ric : 0.020u 0.020s 2m17.120s 0.02%
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2: ^lapton and ^ric : 0.030u 0.020s 2m11.767s 0.03%
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3: ^lapton and ^ric : 0.040u 0.010s 2m8.128s 0.03%
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trashing
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1: ^lling and ^tones : 0.020u 0.030s 0m18.179s 0.27%
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2: ^lling and ^tones : 0.030u 0.010s 0m1.897s 2.10%
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3: ^lling and ^tones : 0.040u 0.010s 0m1.619s 3.08%
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trashing
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1: ^aughan and ^evie : 0.070u 0.010s 0m11.765s 0.67%
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2: ^aughan and ^evie : 0.040u 0.010s 0m1.198s 4.17%
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3: ^aughan and ^evie : 0.030u 0.020s 0m0.872s 5.73%
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trashing
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1: ^lling : 0.040u 0.000s 0m28.623s 0.13%
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2: ^lling : 0.030u 0.010s 0m2.339s 1.70%
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3: ^lling : 0.030u 0.010s 0m1.975s 2.02%
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trashing
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1: ^stev and ^ray and ^vaugh : 0.020u 0.010s 0m17.667s 0.16%
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2: ^stev and ^ray and ^vaugh : 0.030u 0.010s 0m3.745s 1.06%
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3: ^stev and ^ray and ^vaugh : 0.030u 0.020s 0m3.439s 1.45%
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trashing
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1: ^lling (no join) : 0.020u 0.040s 0m2.218s 2.70%
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2: ^lling (no join) : 0.020u 0.020s 0m0.506s 7.90%
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3: ^lling (no join) : 0.030u 0.030s 0m0.510s 11.76%
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trashing
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1: ^vaughan (no join) : 0.040u 0.050s 0m2.048s 4.39%
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2: ^vaughan (no join) : 0.030u 0.020s 0m0.332s 15.04%
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3: ^vaughan (no join) : 0.040u 0.010s 0m0.318s 15.72%
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trashing
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1: ^rol (no join) : 0.020u 0.030s 0m2.384s 2.09%
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2: ^rol (no join) : 0.020u 0.030s 0m0.676s 7.39%
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3: ^rol (no join) : 0.020u 0.030s 0m0.697s 7.17%
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