In this test, Hpricot and REXML are only listed where N=2 because they were found to be prohibitively slow when using larger N.
In the N = 2 test, we see that nokogiri and libxml-ruby are the top two in speed for all four tests. In all four tests, nokogiri’s throughput is 15 to 20 percent more than libxml-ruby per second.
It took a little over 1 minute for hpricot to parse 14M of XML and rexml over 2 minutes, so they will be removed for the rest of the document parsing benchmarks.
Nokogiri: 1.2.2
LibXML: 1.1.2
Loaded suite test/dom/xml/test_large_document_parsing
Started
test_IO_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=2
user system total real kBps
null 0.430000 0.040000 0.470000 ( 0.477970) 29810.78
nokogiri 1.220000 0.180000 1.400000 ( 1.408751) 10114.39
libxml-ruby 1.670000 0.040000 1.710000 ( 1.721740) 8275.73
hpricot 73.120000 0.920000 74.040000 ( 74.342554) 191.66
rexml 150.180000 0.860000 151.040000 (151.647898) 93.96
.
test_in_memory_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=2
user system total real kBps
null 0.860000 0.010000 0.870000 ( 0.872426) 16332.23
nokogiri 2.470000 0.040000 2.510000 ( 2.514397) 5666.83
libxml-ruby 2.850000 0.030000 2.880000 ( 2.892127) 4926.71
hpricot 73.820000 0.400000 74.220000 ( 74.483093) 191.30
rexml 136.000000 0.570000 136.570000 (137.034817) 103.98
.
test_IO_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=777
user system total real kBps
null 0.950000 0.060000 1.010000 ( 1.018504) 13978.50
nokogiri 2.240000 0.070000 2.310000 ( 2.318921) 6139.56
libxml-ruby 2.680000 0.080000 2.760000 ( 2.769398) 5140.89
hpricot 30.340000 0.320000 30.660000 ( 30.792691) 462.36
rexml 63.510000 0.380000 63.890000 ( 64.127190) 222.01
.
test_in_memory_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=777
user system total real kBps
null 0.940000 0.000000 0.940000 ( 0.951877) 14956.93
nokogiri 2.610000 0.050000 2.660000 ( 2.674813) 5322.67
libxml-ruby 3.020000 0.060000 3.080000 ( 3.086919) 4612.09
hpricot 30.060000 0.210000 30.270000 ( 30.394336) 468.41
rexml 58.570000 0.240000 58.810000 ( 58.988131) 241.36
.
Finished in 663.429031 seconds.
4 tests, 0 assertions, 0 failures, 0 errors
In this test, as well as the rest of the document parsing tests, hpricot and rexml have been removed. This test shows nokogiri still ahead. Nokogiri’s throughput in this test ranges between 10 and 15 percent higher than libxml-ruby.
Nokogiri: 1.2.2
LibXML: 1.1.2
Loaded suite test/dom/xml/test_large_document_parsing
Started
test_IO_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=10
user system total real kBps
null 2.100000 0.180000 2.280000 ( 2.295364) 31037.91
nokogiri 7.780000 0.370000 8.150000 ( 8.171552) 8718.45
libxml-ruby 9.780000 0.240000 10.020000 ( 10.063794) 7079.17
.
test_in_memory_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=10
user system total real kBps
null 3.080000 0.040000 3.120000 ( 3.135862) 22718.89
nokogiri 8.230000 0.130000 8.360000 ( 8.386180) 8495.32
libxml-ruby 9.060000 0.130000 9.190000 ( 9.231400) 7717.50
.
test_IO_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=3888
user system total real kBps
null 2.090000 0.270000 2.360000 ( 2.378218) 29955.52
nokogiri 6.270000 0.340000 6.610000 ( 6.630886) 10743.78
libxml-ruby 7.010000 0.320000 7.330000 ( 7.363300) 9675.11
.
test_in_memory_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=3888
user system total real kBps
null 3.160000 0.020000 3.180000 ( 3.192408) 22315.68
nokogiri 6.050000 0.200000 6.250000 ( 6.276588) 11350.24
libxml-ruby 6.950000 0.230000 7.180000 ( 7.208386) 9883.04
.
Finished in 76.875235 seconds.
4 tests, 0 assertions, 0 failures, 0 errors
N has been increased by a power of 10, and nokogiri is still ahead. Nokogiri’s throughput in this test ranges between 10 and 25 percent higher than libxml-ruby.
Nokogiri: 1.2.2
LibXML: 1.1.2
Loaded suite test/dom/xml/test_large_document_parsing
Started
test_IO_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=100
user system total real kBps
null 20.230000 1.650000 21.880000 ( 21.956262) 32447.83
nokogiri 86.620000 2.440000 89.060000 ( 89.409650) 7968.19
libxml-ruby 96.420000 2.330000 98.750000 ( 99.134173) 7186.55
.
test_in_memory_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=100
user system total real kBps
null 30.100000 0.350000 30.450000 ( 30.572049) 23303.41
nokogiri 85.480000 1.300000 86.780000 ( 87.085411) 8180.85
libxml-ruby 98.200000 1.380000 99.580000 ( 99.941853) 7128.48
.
test_IO_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=38881
user system total real kBps
null 19.680000 2.700000 22.380000 ( 22.486623) 31682.21
nokogiri 58.150000 3.160000 61.310000 ( 61.542096) 11576.24
libxml-ruby 69.800000 3.300000 73.100000 ( 73.398682) 9706.25
.
test_in_memory_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=38881
user system total real kBps
null 29.420000 0.120000 29.540000 ( 29.635819) 24039.36
nokogiri 55.390000 1.860000 57.250000 ( 57.449228) 12400.97
libxml-ruby 69.300000 2.240000 71.540000 ( 71.809794) 9921.01
.
Finished in 747.07912 seconds.
4 tests, 0 assertions, 0 failures, 0 errors
Both parsers are dealing with a little under 7G of XML in this test, and nokogiri still holds the lead. Nokogiri’s throughput is between 14 and 24 percent higher than libxml-ruby in this test, which results in over 2 minute time savings in some tests.
Nokogiri: 1.2.2
LibXML: 1.1.2
Loaded suite test/dom/xml/test_large_document_parsing
Started
test_IO_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=1000
user system total real kBps
null 208.930000 17.220000 226.150000 (227.046035) 31378.35
nokogiri 873.320000 23.520000 896.840000 (900.192461) 7914.23
libxml-ruby 1090.520000 25.710000 1116.230000 (1120.404723) 6358.71
.
test_in_memory_parsing(XmlTruth::DOM::XML::LargeDocumentParsingTest) N=1000
user system total real kBps
null 350.080000 3.330000 353.410000 (354.899751) 20074.20
nokogiri 905.130000 14.660000 919.790000 (923.839022) 7711.66
libxml-ruby 1050.560000 14.880000 1065.440000 (1069.348717) 6662.31
.
test_IO_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=388813
user system total real kBps
null 203.430000 31.880000 235.310000 (236.301345) 30149.28
nokogiri 593.550000 35.540000 629.090000 (631.526449) 11281.10
libxml-ruby 684.550000 34.600000 719.150000 (721.846732) 9869.57
.
test_in_memory_parsing(XmlTruth::DOM::XML::SmallDocumentParsingTest) N=388813
user system total real kBps
null 332.380000 1.390000 333.770000 (335.052463) 21263.28
nokogiri 584.380000 20.860000 605.240000 (607.497158) 11727.32
libxml-ruby 716.080000 25.860000 741.940000 (744.587887) 9568.13
.
Finished in 7876.25476 seconds.
4 tests, 0 assertions, 0 failures, 0 errors