reduce memory on leveldb

[decryp2kanon]

sugarchain/src/leveldb/include/leveldb/options.h

Lines 85 to 90 in 8db2b95

	// Number of open files that can be used by the DB. You may need to
	// increase this if your database has a large working set (budget
	// one open file per 2MB of working set).
	//
	// Default: 1000
	int max_open_files;

Dave pointed this out. His suggestion is 256

[Overdrive5]

I will post a formal PR after some more testing.

[decryp2kanon]

chatGPT told

[Overdrive5]

If you wish, I can experiment with these variables to see how much impact they have. My personal goal was to get the qt wallet footprint under 4GB. Thereby giving it wider acceptance by users.

[Overdrive5]

Well....
I searched for:
DEFAULT_DB_CACHE_SIZE
m_cache_size

in both wallet code base and found nothing unfortunately.