http://java.sun.com/javase/6/webnotes/trouble/TSG-VM/html/memleaks.html#gbyvh
The finalize method prevents that the memory, used by the objects containing the finalize method, is collected and available for the garbage collector. Instead, the memory allocated by such classes are enqueued to a java-internal finalize queue runner. This slows down all operations that uses a lot of object containing finalize methods.
this fix does not remove all finalize method, but such that may be used for throw-away objects that are allocated many times. This should cause a better run-time performance and less OutOfMemoryErrors
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6835 6c8d7289-2bf4-0310-a012-ef5d649a1542
Non-catched jobs may have been the cause for blockings and freezes in case of overloading during strong processing
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6827 6c8d7289-2bf4-0310-a012-ef5d649a1542
for such cases the delete() operation was introduced which is sometimes much cheaper in operation since it does not need to create objects to hold the removed content and it does not need to read those objects.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6824 6c8d7289-2bf4-0310-a012-ef5d649a1542
- no direct deletion of referenced during search (shifted to time after search)
- bundling of all deletions for the references of a single word into one remove operation
- enhanced remove operation by caring that the collection is stored sorted (experimental)
- more String -> byte[] transition for search word lists
- clean up of unused code
- enhanced memory allocation of RowSet Objects (will use a little bit less memory which was wasted before)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6823 6c8d7289-2bf4-0310-a012-ef5d649a1542
- removed usage of URL-Caches which could have been a memory leak
- removed unused classes and methods
- removed not necessary synchronizations
- added synchronization hacks where possible
- fine-tuned crawling speed to prevent IO of balancer
- fixed a bug in IODispatcher that may have caused that no merges were done
- reduced number of parameters in very often called methods (compare methods)
- reduced complexity of data structures of now massively used HandleSet class
- reduction of new String() and getBytes() usage / new methods to support this transition
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6820 6c8d7289-2bf4-0310-a012-ef5d649a1542
- enhanced the Balancer performance when building new domain stacks using a new Table buffer
- added the new Table buffer BufferedObjectIndex class
- changed order of access to LURL-read (prefereing segment over Crawl Queues) will reduced blocking time on balancer
- fixed PPM setting in Crawler_p servlet (had doubled values)
- reduced synchronization in IndexCell because it is not necessary: reduced blocking during indexing/merging/dumping
- removed did-you-mean cache in IndexCell because that caused too much overhead and more memory usage but was not very useful. This reduced also deadlocks that could be causes when searched are performed during indexing.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6819 6c8d7289-2bf4-0310-a012-ef5d649a1542
The result should be a less usage of new String() and less memory usage (since a String-encapsulated byte[] has 40 bytes overhead)
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6815 6c8d7289-2bf4-0310-a012-ef5d649a1542
This should prevent URLs with bad referrer entries from being dropped by transferURL or even crashing the whole Transmission$Chunk
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6792 6c8d7289-2bf4-0310-a012-ef5d649a1542
pass value as byte[], not as String. This should cause that less
byte[] <-> String conversions are made during time-critical tasks.
This redesign is not yet complete, more to come ..
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6775 6c8d7289-2bf4-0310-a012-ef5d649a1542
- reverted SVN 6766, this is too dangerous (may cause unexpected memory usage) and should not be necessary
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6773 6c8d7289-2bf4-0310-a012-ef5d649a1542
This should speed up RWI cache dump and RWI merge operations and should cause less blocking time during these processes for the indexer.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6771 6c8d7289-2bf4-0310-a012-ef5d649a1542
- in all cases that the parser is entered it is a whole set of possible parsers computed according to given mime type and file extension,
that means that all parsers are considered where the registered mime acceptance and extension acceptions matches.
that may cause that several parsers are tried for the same file which will cause a success in cases where there was only the mime type was used to choose the right parser and the mime type was given wrongly by the host httpd.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6749 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added 'select all' feature in Tables_p
- enhanced ViewFile.html: has now an input field to load arbitrary resources from the web and analyze them (!!!)
- included the ViewFile servlet into the Index Administration menu
- show in ViewFile if ressource is in url-db and/or in Web cache
- bugfixes to BEncodedHeap and Tables management
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6713 6c8d7289-2bf4-0310-a012-ef5d649a1542
- moved storage of robots.txt entries to WorkTables, so it is now possible to browse the robots entries with the table browser
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6710 6c8d7289-2bf4-0310-a012-ef5d649a1542
will loose its leading role for the re-crawl funtion when the new api tables will work. To be prepared for a replacement
of such functions the bookmark class is re-organised.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6637 6c8d7289-2bf4-0310-a012-ef5d649a1542
all operations on YaCy in a database that should make it possible
1) to re-create a setting on fresh peers
2) to transmit a setting from one peer to another
3) to re-create crawl starts after a complete deletion of the index
This functionality will also support
4) scheduled re-crawls (new implementation)
To implement this, a new database structure has been crated that stores maps into blob heaps. to encode maps the b-encoding technique was used (this is the same encoding that torrent files use)
- added a b-encoder
- enhanced the b-decoder
- added a b-encoded map heap data structure
- added a table organisation based on b-encoded heaps
- added a servlet to maintain such tables (see Tables_p.html)
- integrated the servlet into the Advanced Settings menu
- added an api recording based on the new tables
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6606 6c8d7289-2bf4-0310-a012-ef5d649a1542
- added image size as part of parsed text in images
- avoid unnecessary error messages if parsing of documents failed but one succeeded
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6597 6c8d7289-2bf4-0310-a012-ef5d649a1542
orbiter