Commit Graph

1030 Commits

Author SHA1 Message Date
NoodleDoodleNoodleDoodleNoodleDoodleNoo
2b2ae36724 Pause miner before preparing for incoming blocks 2015-07-15 23:20:18 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
e5d2680094 ** CHANGES ARE EXPERIMENTAL (FOR TESTING ONLY)
Bockchain:
1. Optim: Multi-thread long-hash computation when encountering groups of blocks.
2. Optim: Cache verified txs and return result from cache instead of re-checking whenever possible.
3. Optim: Preload output-keys when encoutering groups of blocks. Sort by amount and global-index before bulk querying database and multi-thread when possible.
4. Optim: Disable double spend check on block verification, double spend is already detected when trying to add blocks.
5. Optim: Multi-thread signature computation whenever possible.
6. Patch: Disable locking (recursive mutex) on called functions from check_tx_inputs which causes slowdowns (only seems to happen on ubuntu/VMs??? Reason: TBD)
7. Optim: Removed looped full-tx hash computation when retrieving transactions from pool (???).
8. Optim: Cache difficulty/timestamps (735 blocks) for next-difficulty calculations so that only 2 db reads per new block is needed when a new block arrives (instead of 1470 reads).

Berkeley-DB:
1. Fix: 32-bit data errors causing wrong output global indices and failure to send blocks to peers (etc).
2. Fix: Unable to pop blocks on reorganize due to transaction errors.
3. Patch: Large number of transaction aborts when running multi-threaded bulk queries.
4. Patch: Insufficient locks error when running full sync.
5. Patch: Incorrect db stats when returning from an immediate exit from "pop block" operation.
6. Optim: Add bulk queries to get output global indices.
7. Optim: Modified output_keys table to store public_key+unlock_time+height for single transaction lookup (vs 3)
8. Optim: Used output_keys table retrieve public_keys instead of going through output_amounts->output_txs+output_indices->txs->output:public_key
9. Optim: Added thread-safe buffers used when multi-threading bulk queries.
10. Optim: Added support for nosync/write_nosync options for improved performance (*see --db-sync-mode option for details)
11. Mod: Added checkpoint thread and auto-remove-logs option.
12. *Now usable on 32-bit systems like RPI2.

LMDB:
1. Optim: Added custom comparison for 256-bit key tables (minor speed-up, TBD: get actual effect)
2. Optim: Modified output_keys table to store public_key+unlock_time+height for single transaction lookup (vs 3)
3. Optim: Used output_keys table retrieve public_keys instead of going through output_amounts->output_txs+output_indices->txs->output:public_key
4. Optim: Added support for sync/writemap options for improved performance (*see --db-sync-mode option for details)
5. Mod: Auto resize to +1GB instead of multiplier x1.5

ETC:
1. Minor optimizations for slow-hash for ARM (RPI2). Incomplete.
2. Fix: 32-bit saturation bug when computing next difficulty on large blocks.

[PENDING ISSUES]
1. Berkely db has a very slow "pop-block" operation. This is very noticeable on the RPI2 as it sometimes takes > 10 MINUTES to pop a block during reorganization.
   This does not happen very often however, most reorgs seem to take a few seconds but it possibly depends on the number of outputs present. TBD.
2. Berkeley db, possible bug "unable to allocate memory". TBD.

[NEW OPTIONS] (*Currently all enabled for testing purposes)
1. --fast-block-sync arg=[0:1] (default: 1)
	a. 0 = Compute long hash per block (may take a while depending on CPU)
	b. 1 = Skip long-hash and verify blocks based on embedded known good block hashes (faster, minimal CPU dependence)
2. --db-sync-mode arg=[[safe|fast|fastest]:[sync|async]:[nblocks_per_sync]] (default: fastest:async:1000)
	a. safe = fdatasync/fsync (or equivalent) per stored block. Very slow, but safest option to protect against power-out/crash conditions.
	b. fast/fastest = Enables asynchronous fdatasync/fsync (or equivalent). Useful for battery operated devices or STABLE systems with UPS and/or systems with battery backed write cache/solid state cache.
	Fast    - Write meta-data but defer data flush.
	Fastest - Defer meta-data and data flush.
	Sync    - Flush data after nblocks_per_sync and wait.
	Async   - Flush data after nblocks_per_sync but do not wait for the operation to finish.
3. --prep-blocks-threads arg=[n] (default: 4 or system max threads, whichever is lower)
        Max number of threads to use when computing long-hash in groups.
4. --show-time-stats arg=[0:1] (default: 1)
	Show benchmark related time stats.
5. --db-auto-remove-logs arg=[0:1] (default: 1)
	For berkeley-db only. Auto remove logs if enabled.

**Note: lmdb and berkeley-db have changes to the tables and are not compatible with official git head version.
	At the moment, you need a full resync to use this optimized version.

[PERFORMANCE COMPARISON]
**Some figures are approximations only.
Using a baseline machine of an i7-2600K+SSD+(with full pow computation):
1. The optimized lmdb/blockhain core can process blocks up to 585K for ~1.25 hours + download time, so it usually takes 2.5 hours to sync the full chain.
2. The current head with memory can process blocks up to 585K for ~4.2 hours + download time, so it usually takes 5.5 hours to sync the full chain.
3. The current head with lmdb can process blocks up to 585K for ~32 hours + download time and usually takes 36 hours to sync the full chain.

Averate procesing times (with full pow computation):
lmdb-optimized:
1. tx_ave = 2.5 ms / tx
2. block_ave = 5.87 ms / block
memory-official-repo:
1. tx_ave = 8.85 ms / tx
2. block_ave = 19.68 ms / block
lmdb-official-repo (0f4a036437)
1. tx_ave = 47.8 ms / tx
2. block_ave = 64.2 ms / block

**Note: The following data denotes processing times only (does not include p2p download time)
lmdb-optimized processing times (with full pow computation):
1. Desktop,  Quad-core / 8-threads 2600k  (8Mb) - 1.25 hours processing time (--db-sync-mode=fastest:async:1000).
2. Laptop,   Dual-core / 4-threads U4200  (3Mb) - 4.90 hours processing time (--db-sync-mode=fastest:async:1000).
3. Embedded, Quad-core / 4-threads Z3735F (2x1Mb) - 12.0 hours processing time (--db-sync-mode=fastest:async:1000).

lmdb-optimized processing times (with per-block-checkpoint)
1. Desktop,  Quad-core / 8-threads 2600k  (8Mb) - 10 minutes processing time (--db-sync-mode=fastest:async:1000).

berkeley-db optimized processing times (with full pow computation)
1. Desktop, Quad-core / 8-threads 2600k  (8Mb) - 1.8 hours processing time (--db-sync-mode=fastest:async:1000).
2. RPI2. Improved from estimated 3 months(???) into 2.5 days (*Need 2AMP supply + Clock:1Ghz + [usb+ssd] to achieve this speed) (--db-sync-mode=fastest:async:1000).

berkeley-db optimized processing times (with per-block-checkpoint)
1. RPI2. 12-15 hours (*Need 2AMP supply + Clock:1Ghz + [usb+ssd] to achieve this speed) (--db-sync-mode=fastest:async:1000).
2015-07-15 23:20:16 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
1f83444d3d Update blockchain.cpp
Fix compilation error
2015-07-15 23:20:15 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
3381fd69a8 Update db_bdb.cpp
- bugfix: prevent re-entering db->get when current buffer contains all possible index values.
2015-07-15 23:20:13 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
dbbc457836 Update db_bdb.cpp 2015-07-15 23:20:12 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
4b7ad2b0a7 Update db_bdb.cpp 2015-07-15 23:20:10 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
da1d3c01de
Experimental BDB workaround optimizations 2015-07-15 21:13:42 -07:00
Riccardo Spagni
b4849310dc
Merge pull request #336
ea58576 Add missing file - i18n.cpp (moneromooo-monero)
2015-07-15 01:08:07 +02:00
moneromooo-monero
ea58576cf6
Add missing file - i18n.cpp 2015-07-15 00:01:05 +01:00
Riccardo Spagni
ad841cb1b9
Merge pull request #335
78b2eab Translatable strings for simplewallet (moneromooo-monero)
2015-07-15 00:54:21 +02:00
Riccardo Spagni
9688e6fdd8
Merge pull request #334
fd73d9c Check and resize if needed at batch transaction start (warptangent)
f9e4afd blockchain_utilities: Increase debug statement's log level (warptangent)
699e4b3 blockchain_utilities: Pass expected number of blocks when starting batch (warptangent)
6e170c8 Optionally allow DB to know expected number of blocks at batch transaction start (warptangent)
2015-07-15 00:53:45 +02:00
Riccardo Spagni
10e50a4da8
Merge pull request #333
5d304ca Fix loop bug when calling core::get_block_template, causing calling thread to lock up. (NoodleDoodleNoodleDoodleNoodleDoodleNoo)
2015-07-15 00:52:45 +02:00
moneromooo-monero
78b2eabc87 Translatable strings for simplewallet
The system is mostly the Qt system, but we don't use Qt to avoid
the dependencies.

See README.i18n for details.
2015-07-14 20:28:25 +01:00
warptangent
fd73d9cc3a
Check and resize if needed at batch transaction start
This currently only affects blockchain_import and blockchain_converter.

When the number of blocks expected for the batch transaction is
provided, make an estimate of the DB space needed. If not enough free
space remains, resize the DB.

The estimate is made based on:
- the average size of the last 500 blocks, or if larger, a min. block
  size of 4k
- a factor for the expanded size a block occupies in the DB across the
  sub-dbs/tables
- a safety factor (1.7) to allow for a "reasonable" average block size
  increase over the batch

Increase the DB size by whichever is greater: the estimated size needed
or a minimum increase size, currently 128 MB.

The conservative factors in the estimate help in testing that the resize
occurs when needed, and without gratuitous size increases. For common
use, the safety factor and minimum increase size could reasonably be
increased.

For testing, setting DEFAULT_MAPSIZE (blockchain_db/lmdb/db_lmdb.h) to 1
<< 27 (128 MB) and recompiling will ensure DB resizes take place sooner
and more frequently.
2015-07-12 00:51:39 -07:00
warptangent
f9e4afd52a
blockchain_utilities: Increase debug statement's log level 2015-07-11 23:54:16 -07:00
warptangent
699e4b3f65
blockchain_utilities: Pass expected number of blocks when starting batch 2015-07-11 23:54:14 -07:00
warptangent
6e170c8b78
Optionally allow DB to know expected number of blocks at batch transaction start
This will assist in a DB resize check.
2015-07-11 23:54:12 -07:00
NoodleDoodleNoodleDoodleNoodleDoodleNoo
5d304cabfd Fix loop bug when calling core::get_block_template, causing calling thread to lock up. 2015-07-10 22:09:21 -07:00
Riccardo Spagni
9dc25497a2
Merge pull request #331
369c7b3 blockchain_utilities/README.md: add workaround for resizing in batch mode (moneromooo-monero)
26970c7 blockchain_utilities/README.md: add high level "what is this about" (moneromooo-monero)
2015-07-09 16:02:08 +02:00
Riccardo Spagni
531656edd9
Merge pull request #332
8623492 Interpret x86_64 as x86-64 for architecture (moneromooo-monero)
2015-07-09 16:00:37 +02:00
moneromooo-monero
8623492150
Interpret x86_64 as x86-64 for architecture 2015-07-09 14:56:20 +01:00
Riccardo Spagni
4b0dbf8493
fix incorrect arch in readme 2015-07-09 15:47:11 +02:00
moneromooo-monero
369c7b32f8
blockchain_utilities/README.md: add workaround for resizing in batch mode 2015-07-07 19:06:34 +01:00
moneromooo-monero
26970c7e27 blockchain_utilities/README.md: add high level "what is this about" 2015-07-07 18:50:43 +01:00
Riccardo Spagni
2cd4d7dd20
Merge pull request #329
204759f mnemonics: fix duplicate symbol error (Wladimir J. van der Laan)
2015-06-23 09:33:15 +02:00
Wladimir J. van der Laan
204759f111
mnemonics: fix duplicate symbol error 2015-06-23 09:28:52 +02:00
Riccardo Spagni
eeff247bf1
Merge pull request #326
ea33cad mnemonics: fix prefix extraction with non ASCII text (moneromooo-monero)
2015-06-21 16:00:19 +02:00
moneromooo-monero
ea33cadebf
mnemonics: fix prefix extraction with non ASCII text 2015-06-21 11:28:45 +01:00
Riccardo Spagni
1720affbd6
Merge pull request #325
3ade396 Set dnssec_valid value correctly in dns_utils; fix address_from_url test (Rostislav)
2015-06-20 22:41:30 +02:00
Riccardo Spagni
4790db9d04
Merge pull request #324
dc4dbc1 simplewallet: allow creating a wallet from a public address and view secret key (moneromooo-monero)
6a0f61d account: allow creating an account from a public address and view secret key (moneromooo-monero)
e05a58a wallet2: fix write_watch_only_wallet comment description (moneromooo-monero)
4bf6f0d simplewallet: forbid seed commands for watch only wallets (moneromooo-monero)
2015-06-20 22:40:47 +02:00
Riccardo Spagni
2716a7592b
Merge pull request #323
2952ffd wallet2: use the same exponential splitting for normal txes (moneromooo-monero)
7c8d3be wallet2: try to split dust sweep txs exponentially (moneromooo-monero)
2015-06-20 22:40:15 +02:00
Rostislav
3ade396406 Set dnssec_valid value correctly in dns_utils; fix address_from_url test 2015-06-20 20:02:13 +00:00
moneromooo-monero
dc4dbc1ceb
simplewallet: allow creating a wallet from a public address and view secret key
The needed information is supplied via a triple:

--generate-from-view-key address:viewkey:filename
2015-06-20 17:33:14 +01:00
moneromooo-monero
6a0f61d800
account: allow creating an account from a public address and view secret key 2015-06-20 17:33:06 +01:00
moneromooo-monero
e05a58aead
wallet2: fix write_watch_only_wallet comment description 2015-06-20 12:30:31 +01:00
moneromooo-monero
4bf6f0d57a
simplewallet: forbid seed commands for watch only wallets
They do not make sense
2015-06-20 12:27:23 +01:00
moneromooo-monero
2952ffd80f
wallet2: use the same exponential splitting for normal txes 2015-06-17 22:00:04 +01:00
moneromooo-monero
7c8d3be656
wallet2: try to split dust sweep txs exponentially
This ensures even massive wallets full of dust can sweep.
2015-06-17 21:31:16 +01:00
Riccardo Spagni
f43f0660aa
Merge pull request #322
f6da25a Fix standard address deserialization (moneromooo-monero)
2015-06-16 21:48:20 +02:00
moneromooo-monero
f6da25a32e
Fix standard address deserialization 2015-06-16 15:36:20 +01:00
Riccardo Spagni
2d9d6c7621
Merge pull request #321
bbc5475 Fix DNS checkpoint consensus code (moneromooo-monero)
2015-06-14 13:10:18 +02:00
Riccardo Spagni
1595187ae2
Merge pull request #320
f9b361b daemon: fix an exit crash (moneromooo-monero)
2015-06-14 13:09:53 +02:00
Riccardo Spagni
66a5c9e50f
Merge pull request #318
fb20071 simplewallet: allow a different password for the watch-only wallet (moneromooo-monero)
2015-06-14 13:09:16 +02:00
Riccardo Spagni
7c2c3be49b
Merge pull request #317
6f8a6dc Add RPC commands to manipulate integrated addresses (moneromooo-monero)
67be2e4 simplewallet: allow integrated_address to generate a random payment id (moneromooo-monero)
7bd6efe account: add a couple consts (moneromooo-monero)
63741d8 Integrated addresses (standard address plus payment id) (moneromooo-monero)
2015-06-14 13:08:25 +02:00
moneromooo-monero
bbc5475418
Fix DNS checkpoint consensus code
It's supposed to load all records and pick one that it finds twice.
2015-06-14 11:05:57 +01:00
moneromooo-monero
f9b361be8a
daemon: fix an exit crash 2015-06-14 00:31:09 +01:00
moneromooo-monero
6f8a6dcb6c Add RPC commands to manipulate integrated addresses 2015-06-13 16:08:00 +01:00
moneromooo-monero
67be2e4b3a
simplewallet: allow integrated_address to generate a random payment id 2015-06-12 16:49:01 +01:00
moneromooo-monero
7bd6efe313
account: add a couple consts 2015-06-12 16:48:52 +01:00
moneromooo-monero
63741d8264
Integrated addresses (standard address plus payment id) 2015-06-12 16:48:41 +01:00