hyc

/* Author: Howard Chu <hyc@symas.com> 2023-05-20
 *
 * monitor keyboard activity and toggle keyboard backlight
 * for Lenovo Legion 7 gen6.
 */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>

hyc

The backtrace for this clearly shows that the GSSAPI library is closing a socket that doesn't belong to it.

Thread 1 (Thread 0x7fc11edfe700 (LWP 54101)):
#0  0x00007fc65e1c7207 in raise () from /lib64/libc.so.6
No symbol table info available.
#1  0x00007fc65e1c88f8 in abort () from /lib64/libc.so.6
No symbol table info available.
#2  0x00007fc65e1c0026 in __assert_fail_base () from /lib64/libc.so.6
No symbol table info available.
#3  0x00007fc65e1c00d2 in __assert_fail () from /lib64/libc.so.6

hyc

root@randomx:~/RandomX/build# ./randomx-benchmark --auto --verify
RandomX benchmark v1.1.4
 - Argon2 implementation: reference
 - light memory mode (256 MiB)
 - JIT compiled mode 
 - hardware AES mode
 - small pages mode
Initializing ...
Memory initialized in 1.42558 s
Initializing 1 virtual machine(s) ...

hyc

commit a4838d293e34ea9eb52a52183ba31ee62f54d036
Author: Howard Chu <hyc@symas.com>
Date:   Thu May 30 10:06:44 2019 +0100

    debug branch

diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index 108de6a0c..86c44c38f 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp

hyc

[hyc@gamba dbbench]$ bin/t_lmdb
LMDB: version LMDB 0.9.70: (December 19, 2015)
Date:      Sat Oct  7 19:18:38 2017
CPU:            4 * AMD A10-4600M APU with Radeon(tm) HD Graphics
CPUCache:   2048 KB
Keys:      16 bytes each
Values:  100 bytes each (50 bytes after compression)
Entries:        1000000
RawSize:        110.6 MB (estimated)
FileSize:   62.9 MB (estimated)

hyc

violino:/home/software/dbbench/bin> foreach i (*)
foreach? rm -rf /tmp/dbbench-1000/*
foreach? ./$i
foreach? end
Basho LevelDB: version 1.9
Date:	   Thu Sep 28 02:45:11 2017
CPU:		4 * Intel(R) Core(TM)2 Extreme CPU Q9300  @ 2.53GHz
CPUCache:   6144 KB
Keys:	   16 bytes each
Values:	 100 bytes each (50 bytes after compression)

hyc

/home/software/bitmonero/build/release.64/bin.0.9.3$ /usr/bin/time -v ./simplewallet --generate-new-wallet wall --password foobar
Creating the logger system
Monero 'Hydrogen Helix' (v0.9.3.0-release)
Logging at log level 0 to /home/software/bitmonero/build/release.64/bin.0.9.3/./simplewallet.log
List of available languages for your wallet's seed:
0 : English
1 : Spanish
2 : German
3 : Italian
4 : Portuguese

hyc

Restoring a wallet using https://github.com/LMDB/bitmonero/commit/be15f5a6d945c3926781133bca8c838d5f94a218
The blockchain had 1025121 blocks, the first block containing a txn for the wallet is 882230. So 86% of the
blockchain would have been scanned without having anything relevant.
See https://github.com/monero-project/bitmonero/issues/805 for more discussion.

violino:/home/software/bitmonero/build/debug/bin> /usr/bin/time -v ./simplewallet --restore-deterministic-wallet --wallet-file wall1 --password tester1
Creating the logger system
Monero 'Hydrogen Helix' (v0.9.4.0-be15f5a)
Logging at log level 0 to /home/software/bitmonero/build/debug/bin/./simplewallet.log
Specify Electrum seed: xxx

hyc

Some results from working with the blockchain DB on a 5400rpm HDD (WD20EARX), starting with blockchain.raw from 2015-12-19 (874830 blocks).
The blockchain.raw file is on a separate drive, an SSD.

Import using v0.9.4
2016-Apr-08 16:46:38.540175 End of file reached
2016-Apr-08 16:46:39.038292 Number of blocks imported: 874829
2016-Apr-08 16:46:39.038366 Finished at block: 874829  total blocks: 874830

2016-Apr-08 16:46:39.038984 Closing IO Service.
	Command being timed: "./blockchain_import --data-dir /mnt/1/bitmo --database lmdb#nosync --verify off --input-file /home/hyc/Public/blockchain.raw"

hyc

blocks
  uint64_t (block height) -> blobdata (block_to_blob(blk))

block_info
  uint64_t (block_height) -> mdb_block_info {timestamp, coins, size, difficulty, hash}

block_heights
  crypto::hash -> uint64_t (block height)