Native library optimization level research

This page will discuss all our native JDK libraries (except Hotspot) with regard to optimization levels, both what is currently used, and material for discussing a change.

Current C/C++ JDK native libraries, default (bold) and other optimization levels and the size of the libs on various platforms ; info is from JDK25

Optimizing levels marked with * have special settings e.g. regarding compiler version/debug level

Library	O-level	Linux ppc64le gcc 13.2.0 (SAP)	Linux x86_64 gcc 13.2.0 (SAP)	Linux aarch64 gcc 13.2.0 (SAP)	Linux Alpine x86_64 gcc 12.2.1 (SAP)	Macos aarch64 XCode 15.4 (SAP)	Macos x86_64 XCode 15.4 (SAP)	AIX ppc64 XLC 17.1.2 (SAP)	Windows x86_64 VS2022 17.6.5 (SAP)
LIBNET	LOW	84K	64K	84K	76K	100K	76K	440K	52K
	HIGHEST	148K	64K	84K	80K	116K	76K	444K	56K
LIBNIO	HIGH	164K	108K	160K	108K	128K	96K	704K	76K
	HIGHEST	164K	108K	160K	108K	128K	96K	704K	84K
LIBOSXSECURITY	LOW					80K	52K
	HIGHEST					80K	52K
LIBJSIG	LOW	76K	16K	76K	20K	76K	40K	28K
	HIGHEST	76K	16K	76K	20K	76K	40K	28K
LIBVERIFY	HIGH*	80K	68K	76K	68K	108K	76K	292K	48K
	HIGHEST	80K	68K	76K	68K	108K	76K	292K	56K
LIBZIP	LOW	80K	48K	80K	48K	164K	60K	472K	76K
	HIGHEST	80K	44K	80K	48K	164K	60K	480K	84K

LIBJAVA	HIGH	252K	172K	236K	172K	188K	160K	1.5M	108K
	HIGHEST	252K	172K	236K	172K	188K	160K	1.5M	124K
LIBJIMAGE	LOW	228K	156K	164K	148K	80K	56K	192K	28K
	HIGHEST	228K	160K	164K	168K	80K	56K	192K	32K
LIBJLI	HIGH	152K	76K	84K	76K	152K	92K		80K
	HIGHEST	152K	76K	84K	76K	152K	92K		88K
LIBJSOUND	LOW	164K	84K	92K	84K	140K	108K		56K
	HIGHEST	164K	152K	156K	156K	136K	108K		76K
LIBOSXAPP	LOW					192K	164K
	HIGHEST					192K	164K
LIBOSX	LOW					80K	48K
	HIGHEST					80K	48K
LIBAWT	HIGHEST	1.1M	876K	812K	880K	528K	620K	5.1M	1.4M

LIBAWT_HEADLESS	LOW	80K	48K	80K				284K
	HIGHEST	80K	48K	80K				284K
LIBAWT_XAWT	LOW	756K	540K	616K				3.0M
	HIGHEST	756K	556K	612K				3.0M
LIBAWT_LWAWT	LOW					1.2M	1.2M
	HIGHEST					1,2M	1.2M
LIBJAWT	LOW	72K	8K	76K		56K	32K	20K	12K
	HIGHEST	72K	8K	76K		56K	32K	20K	12K
LIBSPLASHSCREEN	SIZE	376K	300K	368K		404K	316K	1.5M	208K
	HIGHEST	628K	464K	432K		500K	424K	1.9M	248K
LIBOSXUI	LOW					104K	68K
	HIGHEST					100K	68K
LIBINSTRUMENT	LOW	80K	56K	80K		96K	72K	552K	48K
	HIGHEST	80K	60K	80K		112K	72K	556K	52K
LIBMANAGEMENT	HIGH*
	HIGHEST
LIBPREFS	HIGH
LIBRMI	LOW
LIBJ2GSS	LOW
LIBSSPI_BRIDGE	LOW
LIBW2K_LSA_AUTH	LOW
LIBOSXKRB5	LOW
LIBJ2PCSC	LOW
LIBJAVAACCESSBRIDGE	LOW
LIBATTACH	LOW
LIBJ2PKCS11	LOW
LIBSUNMSCAPI	LOW
LIBDT_SHMEM	LOW
LIBDT_SOCKET	LOW
LIBJDWP	LOW
LIBJPACKAGEAPPLAUNCHERAUX	LOW
LIBJPACKAGE	LOW
LIBWIXHELPER	LOW
LIBMANAGEMENT_AGENT	LOW
LIBMANAGEMENT_EXT	HIGH*
LIBEXTNET	LOW
LIBSCTP	LOW
LIBJAAS	LOW

Child pages

Native library optimization level research