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62 commits

Author SHA1 Message Date
Sears Russell
ed49949512 This commit breaks the build so that Jimmy and I can sync. Sorry. :( 2005-03-14 00:25:29 +00:00
Sears Russell
1bfb634103 Preliminary benchmark program uploads for SEDA-style response time percentiles vs requests / second 
Also added a few cute little utilities:
  - truncate_log
  - run_recovery

Upped max # of concurrent transactions.  (Current throughput during benchmarking remains ~flat up to 32,000
threads, but past max concurrent transactions was 1,000...)
 2005-03-12 22:11:18 +00:00
Sears Russell
18c772234d new benchmarks revealed that inserts for linkedList, pageOrientedList were taking O(n) time, yielding O(n^2) 
time to build a list, since the lists could not contain duplicate keys.  These operations are now O(1), and
the lists can contain duplicates.
 2005-03-10 20:10:49 +00:00
Sears Russell
f28df29736 Fixed unit tests, added iterator interface, and generic (almost) iterator test harness. 2005-03-10 03:19:04 +00:00
Sears Russell
935de3aeb5 minor changes 2005-03-09 03:24:36 +00:00
Sears Russell
a3112ee81c Fixes for freebsd. 2005-03-02 05:47:38 +00:00
Sears Russell
7833177f05 Fixed the support for more than MAX_TRANSACTION total transactions. 2005-03-02 03:28:00 +00:00
Sears Russell
3e5f7aea8a Bugfixes for OASYS. 2005-03-01 07:32:02 +00:00
Sears Russell
890a7385d0 Fixeds cht test / finished error checking within LLADD, but haven't tested error handling yet. 2005-02-24 21:12:36 +00:00
Sears Russell
29dacbe7ed Error handling for linked list. 2005-02-22 23:11:03 +00:00
Sears Russell
41fb85eef0 More error handling... 2005-02-22 03:10:54 +00:00
Sears Russell
84a20a3c96 Started adding error handling code to LLADD. 2005-02-16 04:11:14 +00:00
Sears Russell
2ac1302062 Recovery now supports the lock manager. (And vice-versa ;) 2005-02-10 21:56:32 +00:00
Sears Russell
8bf6ea29ff Added @todo that details requirements for next version of alloc. 2005-02-10 21:55:35 +00:00
Sears Russell
b8a67cbfb2 Numerous lock manager fixes; more realistic test case for lock manager, added support for optional page-level locking.(Still need to report deadlocks back up to the caller.) 2005-02-10 03:51:09 +00:00
Sears Russell
a4c13449b8 Bugfix for pageOrientedList. 2005-01-31 02:18:46 +00:00
Sears Russell
1260710a27 Got rid of another broken hash implementation... 2005-01-31 01:34:29 +00:00
Sears Russell
bb69197a65 Fixed blob implementation (it was impossible to distinguish between a blob and a record of length 12), removed jbhash, and ported cht to linearHashNTA. 2005-01-31 01:29:52 +00:00
Sears Russell
7cf5fdee6e Re-implemented pageOrientedListNTA from scratch. It's now more flexible, but relies on features that are not provided by Talloc/Tdealloc, so performance isn't as good as it could be. 2005-01-29 01:17:37 +00:00
Sears Russell
4d04155b0e An optimized, but still slow implementation of pageOrientedList. 2005-01-29 01:09:29 +00:00
Sears Russell
56d98adcbf Working, but slow and non-concurrent variable length key/value support for linear hashtable. 2005-01-28 21:28:23 +00:00
Sears Russell
17f76264aa Implemented pageOrientedList, also did some bug fixing, and added some support functions to alloc.c 2005-01-28 03:32:17 +00:00
Sears Russell
b04e71360f Documentation update. 2005-01-20 21:19:47 +00:00
Sears Russell
d7b846d370 CHT is starting to work. 2005-01-19 00:47:55 +00:00
Sears Russell
894e30085c libdfa ported to new hash table implementation. (Uses nested top actions.) 2005-01-15 23:55:49 +00:00
Sears Russell
ac0d413e58 - linkedListNTA is now re-entrant. 
- linearHashNTA now uses nested top actions, is re-entrant, and supports a
  non-re-entrant iterator
- 'recursive' nested top actions allow nested top actions to be nested within each
  other.
 2005-01-15 01:45:27 +00:00
Sears Russell
7a990886d2 The linked list implementation now uses nested top actions. (Also, many bugfixes regarding nested top actions were introduced.) 2005-01-14 10:08:10 +00:00
Sears Russell
360f0d15e2 Working, non-concurrent linear hash and linked list implementations. 
The idea is to implement the non-concurrent versions, and then convert
them to concurrent versions using nested top actions.
 2005-01-14 01:52:53 +00:00
Sears Russell
6198522971 Starting to rip the old jbhash implementation out, and replace it with a 
linear hash implementation.  In particular, I've implemented (sort of) an
iterator for linear hash, and (sort of) ported libdfa to linearhash.c

I say 'sort of' since this functionality is broken with this commit.  On the other hand, CVS should build now, and the tests under lladd will pass.  libdfa's new tests don't pass at the moment.
 2005-01-10 03:02:02 +00:00
Sears Russell
55b0ddf1b6 Fixed nasty bug that was causing the LLADD header to be lost (!!) 2004-12-06 01:20:48 +00:00
Sears Russell
72070acb67 Implemented TsetRange, fixed bug in linear hash. 2004-12-03 00:27:47 +00:00
Sears Russell
443a90ad7c Implemented TrecordType() 2004-12-01 01:26:25 +00:00
Sears Russell
ded5c92c9d Support for nested top actions, with simple unit test. (Haven't tested for thread safety yet.) 2004-11-29 21:28:13 +00:00
Sears Russell
646f9dfca9 Implemented recover_split(), which is needed by the linear hash to recover properly from crashes. It hasn't been tested at all, and is not currently called by anything. 2004-11-29 02:35:37 +00:00
Sears Russell
2c23fb8a43 Did some misc. cleanup work on linearHash 2004-11-28 01:16:48 +00:00
Sears Russell
164c7cfd69 Linear Hash now survives Tdeinit/Tinit cycle (but not crashes!) 2004-11-24 23:26:15 +00:00
Sears Russell
910649a387 Web-site update, a few minor code changes from before the Freenix deadline. 2004-10-27 01:40:09 +00:00
Sears Russell
aead6a5a83 New benchmark, fixed for PROFILE_LATCHES. 2004-10-20 21:55:00 +00:00
Sears Russell
af9e7adee0 Starting work on the actual graph-generation portion of the benchmarks. :) 2004-10-20 06:21:21 +00:00
Sears Russell
903ba4b97b Bugfix. 2004-10-19 22:58:56 +00:00
Sears Russell
ec99c0e258 Lots of optimizations; re-did on-disk layout for the linear hash table. 2004-10-19 21:16:37 +00:00
Sears Russell
6b265f28b0 Speedups, most notably in the logging subsystem. 2004-10-19 04:45:42 +00:00
Sears Russell
ec1276f26f Preliminary version of logical logging linear hash. (No latching yet, and there are some bugs re-opening a closed hash.) 2004-10-18 18:24:54 +00:00
Sears Russell
04cfc7da8e Optimized the 'naive' linear hash table, and moved to sourceforge. :) 2004-10-17 02:17:00 +00:00
Sears Russell
a078f25475 Implemented a linear hash from scratch. Concurrency hasn't been done, but it's probably correct in the single thread case. 2004-10-12 02:44:47 +00:00
Sears Russell
5064e3fac2 Implemented pages that store fixed sized records efficiently, and a java-style ArrayList data structure that efficiently supports (relatively) clustered, O(1) access time expandable arrays. (This will be used for the hash implementation...) 2004-10-06 06:08:09 +00:00
Sears Russell
96e7af92a4 Added test cases for Tprepare(), implemented some redo-only operations, and started to clean up record allocation/deallocation. 
Also, numerous bugfixes.
 2004-10-02 07:29:34 +00:00
Sears Russell
811bc5c710 Implemented a freespace manager that should safely allocate space, even in the face of crashes, and can reclaim unused space (unless an application opens more than one simultaneous transaction that performs allocations) 
Fixed some blob bugs (by adding extra fdatasync() calls).

Began factoring out the page management code so that it is an extenstion, and a less integral part of lladd.
 2004-08-21 00:03:30 +00:00
Sears Russell
b4d7883f66 Fixed regressions, major update of page / slotted interfaces in anticipation of moving LLADD towards a generic transactional page system. 2004-08-17 01:46:17 +00:00
Sears Russell
82e3fdb53a Added (untested) support for whole-page operations, lladdhash now works. 2004-08-03 02:04:56 +00:00