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Abhishek Kona 391885c4e4 stat's collection in leveldb 
Summary:
Prototype stat's collection. Diff is a good estimate of what
the final code will look like.
A few assumptions :
  * Used a global static instance of the statistics object. Plan to pass
  it to each internal function. Static allows metrics only at app
  level.
  * In the Ticker's do not do any locking. Depend on the mutex at each
   function of LevelDB. If we ever remove the mutex, we should change
   here too. The other option is use atomic objects anyways as there
   won't be any contention as they will be always acquired only by one
   thread.
  * The counters are dumb, increment through lifecycle. Plan to use ods
    etc to get last5min stat etc.

Test Plan:
made changes in db_bench
Ran ./db_bench --statistics=1 --num=10000 --cache_size=5000
This will print the cache hit/miss stats.

Reviewers: dhruba, heyongqiang

Differential Revision: https://reviews.facebook.net/D6441
2012-11-08 13:55:49 -08:00
..
builder.cc Allow having different compression algorithms on different levels. 2012-10-29 11:48:09 -07:00
builder.h A number of fixes: 2011-10-31 17:22:06 +00:00
c.cc Make compression options configurable. These include window-bits, level and strategy for ZlibCompression 2012-11-02 11:26:39 -07:00
c_test.c Make compression options configurable. These include window-bits, level and strategy for ZlibCompression 2012-11-02 11:26:39 -07:00
corruption_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
db_bench.cc stat's collection in leveldb 2012-11-08 13:55:49 -08:00
db_filesnapshot.cc The BackupAPI should also list the length of the manifest file. 2012-09-25 03:13:25 -07:00
db_impl.cc Add a readonly db 2012-11-07 14:19:48 -08:00
db_impl.h Add a readonly db 2012-11-07 14:19:48 -08:00
db_impl_readonly.cc Add a readonly db 2012-11-07 14:19:48 -08:00
db_impl_readonly.h Add a readonly db 2012-11-07 14:19:48 -08:00
db_iter.cc A number of fixes: 2011-10-31 17:22:06 +00:00
db_iter.h A number of fixes: 2011-10-31 17:22:06 +00:00
db_statistics.h stat's collection in leveldb 2012-11-08 13:55:49 -08:00
db_stats_logger.cc remove boost 2012-09-16 19:33:43 -07:00
db_test.cc Flush Data at object destruction if disableWal is used. 2012-11-06 15:04:42 -08:00
dbformat.cc Added bloom filter support. 2012-04-17 08:36:46 -07:00
dbformat.h Make some variables configurable for each db instance 2012-06-27 14:36:31 -07:00
dbformat_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
filename.cc put log in a seperate dir 2012-09-06 17:52:08 -07:00
filename.h put log in a seperate dir 2012-09-06 17:52:08 -07:00
filename_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
log_format.h A number of fixes: 2011-10-31 17:22:06 +00:00
log_reader.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
log_reader.h A number of fixes: 2011-10-31 17:22:06 +00:00
log_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
log_writer.cc A number of fixes: 2011-10-31 17:22:06 +00:00
log_writer.h A number of fixes: 2011-10-31 17:22:06 +00:00
memtable.cc A number of fixes: 2011-10-31 17:22:06 +00:00
memtable.h A number of fixes: 2011-10-31 17:22:06 +00:00
repair.cc Make some variables configurable for each db instance 2012-06-27 14:36:31 -07:00
skiplist.h skiplist: optimize for sequential insert pattern 2012-05-11 09:57:40 -07:00
skiplist_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
snapshot.h A number of fixes: 2011-10-31 17:22:06 +00:00
table_cache.cc Add two more options: disable block cache and make table cache shard number configuable 2012-11-01 13:23:21 -07:00
table_cache.h Trigger read compaction only if seeks to storage are incurred. 2012-09-28 11:10:52 -07:00
version_edit.cc Clean up compiler warnings generated by -Wall option. 2012-08-29 14:24:51 -07:00
version_edit.h Make some variables configurable for each db instance 2012-06-27 14:36:31 -07:00
version_edit_test.cc Make some variables configurable for each db instance 2012-06-27 14:36:31 -07:00
version_set.cc Avoid doing a exhaustive search when looking for overlapping files. 2012-11-07 11:47:17 -08:00
version_set.h Avoid doing a exhaustive search when looking for overlapping files. 2012-11-07 11:47:17 -08:00
version_set_reduce_num_levels.cc Add a tool to change number of levels 2012-11-05 10:17:39 -08:00
version_set_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00
write_batch.cc added group commit; drastically speeds up mult-threaded synchronous write workloads 2012-03-08 16:23:21 -08:00
write_batch_internal.h added group commit; drastically speeds up mult-threaded synchronous write workloads 2012-03-08 16:23:21 -08:00
write_batch_test.cc Fix all warnings generated by -Wall option to the compiler. 2012-11-06 14:07:31 -08:00