[jira] [Updated] (COMPRESS-466) Opening of a very large zip file is extremely slow compared to java.util.zip.ZipFile

2019-08-09 Thread Stefan Bodewig (JIRA) 


 [ 
https://issues.apache.org/jira/browse/COMPRESS-466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Stefan Bodewig updated COMPRESS-466:

Labels: zip  (was: )

> Opening of a very large zip file is extremely slow compared to 
> java.util.zip.ZipFile
> 
>
> Key: COMPRESS-466
> URL: https://issues.apache.org/jira/browse/COMPRESS-466
> Project: Commons Compress
>  Issue Type: Improvement
>  Components: Archivers
>Affects Versions: 1.18
> Environment: Tested both on Linux and OSX 10.13.6.
>Reporter: Jakob Sultan Ericsson
>Priority: Major
>  Labels: zip
> Fix For: 1.19
>
>
> We have a quite large zip file 35 gb and try to open this with ZipFile. 
> {code:java}
> try (ZipFile zf = new ZipFile(new File("35gb.zip"))) {
> System.out.println("File opened..." + (System.currentTimeMillis() 
> - start));
> }
> {code}
> This code takes about 300 000 - 400 000 ms (5-6 minutes).
> If I run this with JDK-builtin java.util.zip.ZipFile, same code takes 300 ms 
> (less than a second). 
> I'm not totally sure what it is the problem but I did some debugging and 
> basically all time is spent in
> {code:java}
> private void resolveLocalFileHeaderData(final Map NameAndComment> entriesWithoutUTF8Flag)
> {code}
> Anything that can be done to improve this?



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[jira] [Updated] (COMPRESS-466) Opening of a very large zip file is extremely slow compared to java.util.zip.ZipFile

2019-08-09 Thread Stefan Bodewig (JIRA) 


 [ 
https://issues.apache.org/jira/browse/COMPRESS-466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Stefan Bodewig updated COMPRESS-466:

Component/s: (was: Compressors)
 Archivers

> Opening of a very large zip file is extremely slow compared to 
> java.util.zip.ZipFile
> 
>
> Key: COMPRESS-466
> URL: https://issues.apache.org/jira/browse/COMPRESS-466
> Project: Commons Compress
>  Issue Type: Improvement
>  Components: Archivers
>Affects Versions: 1.18
> Environment: Tested both on Linux and OSX 10.13.6.
>Reporter: Jakob Sultan Ericsson
>Priority: Major
> Fix For: 1.19
>
>
> We have a quite large zip file 35 gb and try to open this with ZipFile. 
> {code:java}
> try (ZipFile zf = new ZipFile(new File("35gb.zip"))) {
> System.out.println("File opened..." + (System.currentTimeMillis() 
> - start));
> }
> {code}
> This code takes about 300 000 - 400 000 ms (5-6 minutes).
> If I run this with JDK-builtin java.util.zip.ZipFile, same code takes 300 ms 
> (less than a second). 
> I'm not totally sure what it is the problem but I did some debugging and 
> basically all time is spent in
> {code:java}
> private void resolveLocalFileHeaderData(final Map NameAndComment> entriesWithoutUTF8Flag)
> {code}
> Anything that can be done to improve this?



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[jira] [Updated] (COMPRESS-466) Opening of a very large zip file is extremely slow compared to java.util.zip.ZipFile

2018-10-08 Thread Stefan Bodewig (JIRA) 


 [ 
https://issues.apache.org/jira/browse/COMPRESS-466?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Stefan Bodewig updated COMPRESS-466:

Issue Type: Improvement  (was: Bug)

> Opening of a very large zip file is extremely slow compared to 
> java.util.zip.ZipFile
> 
>
> Key: COMPRESS-466
> URL: https://issues.apache.org/jira/browse/COMPRESS-466
> Project: Commons Compress
>  Issue Type: Improvement
>  Components: Compressors
>Affects Versions: 1.18
> Environment: Tested both on Linux and OSX 10.13.6.
>Reporter: Jakob Sultan Ericsson
>Priority: Major
> Fix For: 1.19
>
>
> We have a quite large zip file 35 gb and try to open this with ZipFile. 
> {code:java}
> try (ZipFile zf = new ZipFile(new File("35gb.zip"))) {
> System.out.println("File opened..." + (System.currentTimeMillis() 
> - start));
> }
> {code}
> This code takes about 300 000 - 400 000 ms (5-6 minutes).
> If I run this with JDK-builtin java.util.zip.ZipFile, same code takes 300 ms 
> (less than a second). 
> I'm not totally sure what it is the problem but I did some debugging and 
> basically all time is spent in
> {code:java}
> private void resolveLocalFileHeaderData(final Map NameAndComment> entriesWithoutUTF8Flag)
> {code}
> Anything that can be done to improve this?



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