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Improve XML Scanner performance #444

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angelozerr opened this issue Jun 17, 2019 · 0 comments · Fixed by #445
Closed

Improve XML Scanner performance #444

angelozerr opened this issue Jun 17, 2019 · 0 comments · Fixed by #445
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@angelozerr
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performance This issue or enhancement is related to performance concerns
Milestone
v0.8.0

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@angelozerr
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angelozerr commented Jun 17, 2019 •
edited

In XML Scanner, it seems that consumed CPU time is spent in 3 regex to extract element name, attribute name and attribute value. This issue is to change just thoses regexp into a Java code to improve performance.

After testing that, a large file like nasa.xml is parsed 2-3 times faster
@angelozerr angelozerr self-assigned this Jun 17, 2019
@angelozerr angelozerr added the performance This issue or enhancement is related to performance concerns label Jun 17, 2019
angelozerr pushed a commit that referenced this issue Jun 17, 2019
Improve XMLScanner performance
dc2e0a6 
Fix #444

This PR improve XMLScanner performance by replacing regex with java code
for the 3 regexp which are the most used (element name, attribute name,
attribute value).

After testing that, a large file like nasa.xml is parsed 2-3 times
faster. You can see this time when you start XMLScannerPerformance and
DOMParserPerformance.

Signed-off-by: azerr <azerr@redhat.com>
@angelozerr angelozerr mentioned this issue Jun 17, 2019
Merged
@angelozerr angelozerr added this to the v0.8.0 milestone Jun 17, 2019
angelozerr pushed a commit that referenced this issue Jun 18, 2019
@angelozerr
Improve XMLScanner performance
1ebfc07 
Fix #444

This PR improve XMLScanner performance by replacing regex with java code
for the 3 regexp which are the most used (element name, attribute name,
attribute value).

After testing that, a large file like nasa.xml is parsed 2-3 times
faster. You can see this time when you start XMLScannerPerformance and
DOMParserPerformance.

Signed-off-by: azerr <azerr@redhat.com>
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@angelozerr angelozerr

Labels
performance This issue or enhancement is related to performance concerns
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Milestone
v0.8.0
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Improve XMLScanner performance eclipse/lemminx
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