Commit Graph

37 Commits

Author SHA1 Message Date
orbiter
4bea3f9714 hack to reduce resource contention caused by massive UTF8 decodings which use java.nio resources:
used a ASCII String <-> byte[] conversion wherever possible. Many Strings in YaCy are hashes which are pure ASCII (base64 hashes).
The new ASCII String <-> byte[] conversion method have less computation overhead than the UTF8 conversion.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7746 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-05-27 08:24:54 +00:00
orbiter
123375bfba added a new yacy protocol servlet 'idx'. This returns an index to one of the data entities that is stored in YaCy.
This servlet currently only serves for indexes to the web structure hosts. It can be tested by calling
http://localhost:8090/yacy/idx.json?object=host
This yacy protocol servlet is the first one that returns JSON code and that also shows index entries in a readable format. This will make the development of API applications much easier. This is also an example implementation for possible json versions of the other existing YaCy protocol interfaces.

The main purpose of this new feature is to provide a distributed block rank collection feature. Creating a block rank is very difficult if the forward-link data is first collected and then one peer must create a backward-link index. This interface provides already a partial backward index and therefore a collection of all these indexes needs only to be joined which is very easy. The result should be the computation of new block rank tables that all peers can perform.

To reduce load from peers this servlet buffers all data and refreshes it only once in 12 hours. This very slow update cycle is needed because the interface will be called round-robin from all peers once after start-up.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7724 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-05-15 22:57:31 +00:00
orbiter
30aed9824a moved getBytes() to UTF8.getBytes() to use a default String encoding
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7580 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-03-10 12:35:32 +00:00
orbiter
e1b6916423 always try to guess the size of a StringBuilder to prevent too many memory re-allocations
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7572 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-03-09 09:29:05 +00:00
low012
3b40b98256 *) set SVN properties
*) minor changes

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7567 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-03-08 01:51:51 +00:00
orbiter
cb1f49d0f2 replaced all 'new String' with default encoding (missing) or UTF-8 encoding with a String generation method that uses a pre-defined Charset constant for UTF-8. This avoids a cache-lookup for the Charset object using String hashing of the String 'UTF-8'.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7558 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-03-07 20:36:40 +00:00
orbiter
7138f4036b less synchronization, better thread dump tool
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7556 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-03-07 15:29:45 +00:00
orbiter
1110d16af9 performance hack: replaced generic row.getColBytes() call with row.getPrimaryKeyBytes() where the column is 0
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7529 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-02-25 12:41:27 +00:00
orbiter
ad7fcb9d61 Enhanced Base64Order transformation: less overhead (transformation between StringBuilder and byte[])
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7523 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-02-25 00:56:31 +00:00
orbiter
6083f2f171 fix for (false) oom
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7484 6c8d7289-2bf4-0310-a012-ef5d649a1542
2011-02-15 14:26:25 +00:00
orbiter
7cd9d9d22a - enhanced DidYouMean computation using a faster count on index entries; this causes that results can be ranked better
- added limitations on DidYouMean result sets according to input and output string length

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7246 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-10-12 22:02:10 +00:00
orbiter
6388a58fc7 better memory management and slightly less (in total and temporary) RAM allocation:
- confirm that database objects that are not supposed to grow do not have a index memory management that is designed for growth
- changed index sorting method in such a way that it allocates less objects during quicksort
- database classes classes renaming (shorter, naming addresses that objects hold in RAM)
- added a large number of asserts to check if objects actually take the RAM that they should have


git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7019 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-08-04 13:33:12 +00:00
orbiter
5924a0d851 - enhanced concurrency in database index access for multicore
- added statistics about database index caches in PerformanceMemory_p.html
- adoped many classes to use the new statistics
- added missing close statements

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7018 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-08-03 04:58:48 +00:00
orbiter
9ab06bc333 enhancement in sorting efficiency (database root operation): less object allocation
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@7015 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-08-03 02:42:28 +00:00
orbiter
9cde05418f fixed url crawl list display
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6908 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-05-31 00:27:00 +00:00
orbiter
455a763d7c performance hacks
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6845 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-28 08:38:57 +00:00
orbiter
b6cce08019 fixed a bug in rwi storage data size allocation
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6843 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-27 22:22:16 +00:00
orbiter
90c3e5d6f6 - cleanup, removed unused imports
- added crawling queue sizes to /api/status_p.xml, syntax same as in queues_p.html
- fixed a bug in queue enumeration that caused a out of bounds exception

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6842 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-27 21:47:41 +00:00
orbiter
b95ae2518b fix for assert
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6829 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-21 17:59:22 +00:00
orbiter
027b971bde fix for concurrent quicksort: catch jobs from ThreadPoolExecutor that had been rejected because of full processing queues.
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
2010-04-21 13:44:59 +00:00
orbiter
93ea0a4789 enhanced remove operation in search consequences (which are triggered when the snippet fetch proves that the word has disappeared from the page that was stored in the index)
- 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
2010-04-20 13:45:22 +00:00
orbiter
64f29f990e a collection of performance hacks and code cleanup:
- 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
2010-04-19 16:42:37 +00:00
orbiter
ed07046870 flush only when > 3000 RWIs present + code cleanup
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6817 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-16 16:07:19 +00:00
orbiter
1a8a134e0c continuing String-hash - to - byte[]-hash redesign that was started in SVN 6775 and continued in SVN 6790
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
2010-04-15 13:22:59 +00:00
orbiter
aa083fc45c try to get a fix for OOM problem in case that there is no real problem with missing memory.
See also http://forum.yacy-websuche.de/viewtopic.php?p=19835#p19835

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6802 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-13 11:39:54 +00:00
orbiter
25aef069a6 continuing String-hash - to - byte[]-hash redesign that was started in SVN 6775
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6790 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-04-08 00:11:32 +00:00
sixcooler
cd6de83905 next try for for http://forum.yacy-websuche.de/viewtopic.php?f=5&t=2703
(reverted 6692)

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6694 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-02-23 15:59:58 +00:00
sixcooler
bfe4693e9a fix for http://forum.yacy-websuche.de/viewtopic.php?f=5&t=2703
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6693 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-02-23 13:46:56 +00:00
orbiter
dd459281c8 applied code changes that are recommended by PMD
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6563 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-01-10 23:09:48 +00:00
orbiter
d77a8f3b3e added some modifications recommended by PMD for better performance
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6560 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-01-10 01:40:26 +00:00
orbiter
eeca2ded92 fix for http://forum.yacy-websuche.de/viewtopic.php?p=18500#p18500
- catch uncatched OOM
- less wasting of memory

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6555 6c8d7289-2bf4-0310-a012-ef5d649a1542
2010-01-09 00:08:16 +00:00
orbiter
362b7a929b added extensive memory protection logic to avoid out of memory errors that may be caused by the RowCollection memory allocation function
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6521 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-12-09 23:27:26 +00:00
orbiter
4a5100789f replaced _all_ size() == 0 with isEmpty() and all size() > 0 with !isEmpty(). The isEmpty() method is much faster in some cases, especially when used to access badly balanced hashtables where an size() operation becomes a large iteration.
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6510 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-12-02 00:37:59 +00:00
orbiter
77c99e500f added more control over memory allocation
should avoid some of the OOMs

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6436 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-10-27 15:25:48 +00:00
orbiter
2a7fe35f92 performance tuning using more final modifiers in the kelondro core
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6402 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-10-12 17:37:12 +00:00
orbiter
bea3b99aff moved table and util classes
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6397 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-10-10 01:14:19 +00:00
orbiter
194da25a2f moved kelondro index
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6393 6c8d7289-2bf4-0310-a012-ef5d649a1542
2009-10-09 23:32:08 +00:00