This is a cool tool. https://github.com/google/bloaty
Here is a set of ways to use it. https://github.com/PX4/Firmware/blob/4e7dedede79872401f50c733bd74e5ddf1fa41f1/cmake/bloaty.cmake (please ignore the cmake...) This is the one that can be used to see the deltas, in our case from mater to the PR. But it is easy to compare to a release branch. # bloaty compare with last master build add_custom_target(bloaty_compare_master COMMAND wget -c -N --no-verbose https://s3.amazonaws.com/px4-travis/Firmware/master/${PX4_BOARD_VENDOR}_${PX4_BOARD_MODEL}_${PX4_BOARD_LABEL}.elf - O master.elf COMMAND ${BLOATY_PROGRAM} -d symbols ${BLOATY_OPTS} $<TARGET_FILE:px4> -- master.elf DEPENDS px4 WORKING_DIRECTORY ${PX4_BINARY_DIR} VERBATIM USES_TERMINAL ) -----Original Message----- From: Brennan Ashton [mailto:bash...@brennanashton.com] Sent: Tuesday, June 23, 2020 10:53 PM To: dev@nuttx.apache.org Subject: Re: [VOTE] Apache NuttX 9.1.0 (incubating) RC0 release Greg and Alan, Started looking and there are some changes in the diff in the generated config.h as can be seen here One change is the date command is no longer disabled by default. This accounts for 2304 bytes, leaving only 800 byte change. I'm not sure if changing the default was expected, but I dont think this should block the release. The TLS changes are harder for me to judge and the netdb change I think just changes ram usage. I can dig more, if you think it is necessary, I agree that we should keep and eye on the size though. I had some thoughts on keeping the build artifacts around so we could track and test things easier (hard to go back in time with both repos changing). 9.1.0 text data bss dec hex filename 71731 104 2476 74311 12247 ./9.1/nuttx 9.1.0 (with date disabled) text data bss dec hex filename 69427 104 2476 72007 11947 nuttx --- /home/bashton/nuttx/apache/sizetest/9.0/config.h +++ /home/bashton/nuttx/apache/sizetest/9.1/config.h @@ -135,7 +135,6 @@ #define CONFIG_TASK_NAME_SIZE 31 #define CONFIG_MAX_TASKS 16 #define CONFIG_SCHED_WAITPID 1 -#define CONFIG_NPTHREAD_KEYS 4 #define CONFIG_PTHREAD_MUTEX_ROBUST 1 #define CONFIG_DEV_CONSOLE 1 #define CONFIG_SDCLONE_DISABLE 1 @@ -196,15 +195,14 @@ #define CONFIG_POSIX_SPAWN_PROXY_STACKSIZE 1024 #define CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE 2048 #define CONFIG_LIB_HOSTNAME "" -#define CONFIG_ARCH_HAVE_TLS 1 -#define CONFIG_NETDB_BUFSIZE 128 +#define CONFIG_TLS_NELEM 4 +#define CONFIG_NETDB_BUFSIZE 256 #define CONFIG_NETDB_MAX_IPADDR 1 -#define CONFIG_LIBC_IOCTL_VARIADIC 1 #define CONFIG_LIB_SENDFILE_BUFSIZE 512 #define CONFIG_BUILTIN 1 #define CONFIG_HAVE_CXX 1 #define CONFIG_EXAMPLES_HELLO 1 -#define CONFIG_EXAMPLES_HELLO_PROGNAME hello +#define CONFIG_EXAMPLES_HELLO_PROGNAME "hello" #define CONFIG_EXAMPLES_HELLO_PRIORITY 100 #define CONFIG_EXAMPLES_HELLO_STACKSIZE 2048 #define CONFIG_NSH_LIBRARY 1 @@ -214,7 +212,6 @@ #define CONFIG_NSH_MAXARGUMENTS 7 #define CONFIG_NSH_NESTDEPTH 3 #define CONFIG_NSH_BUILTIN_APPS 1 -#define CONFIG_NSH_DISABLE_DATE 1 #define CONFIG_NSH_DISABLE_LOSMART 1 #define CONFIG_NSH_DISABLE_PRINTF 1 #define CONFIG_NSH_DISABLE_TRUNCATE 1 @@ -227,7 +224,7 @@ #define CONFIG_SYSTEM_NSH 1 #define CONFIG_SYSTEM_NSH_PRIORITY 100 #define CONFIG_SYSTEM_NSH_STACKSIZE 2048 -#define CONFIG_SYSTEM_NSH_PROGNAME nsh +#define CONFIG_SYSTEM_NSH_PROGNAME "nsh" #define CONFIG_SYSTEM_NSH_CXXINITIALIZE 1 #define CONFIG_READLINE_HAVE_EXTMATCH 1 #define CONFIG_SYSTEM_READLINE 1 On Tue, Jun 23, 2020 at 6:17 PM Gregory Nutt <spudan...@gmail.com> wrote: > > On 6/23/2020 6:59 PM, Gregory Nutt wrote: > > > >> I compared it to release 9.0 and noticed it increased about 3 KiB of > >> Flash usage, but I didn't check further to see what happened. > >> > >> NuttX 9.0 > >> > >> $ arm-none-eabi-size nuttx > >> text data bss dec hex filename > >> 68624 104 2496 71224 11638 nuttx > >> > >> > >> NuttShell (NSH) NuttX-9.0.0 > >> nsh> free > >> total used free largest > >> Umem: 192976 7536 185440 125248 > >> nsh> > >> > >> > >> NuttX 9.1 RC0 > >> > >> $ arm-none-eabi-size nuttx > >> text data bss dec hex filename > >> 71732 104 2476 74312 12248 nuttx > >> > >> > >> NuttShell (NSH) NuttX-9.1.0 > >> nsh> free > >> total used free largest > >> Umem: 192992 7536 185456 125264 > >> nsh> > > > > This might indicate a significant problem. One possible explanation > > might be that a new configuration option enables logic by default that > > it should not. Almost any explanation you can think of suggests a > > problem. > > Can you look into this Alan? I would think that an unexplained 3Kb size > increase in such a trivial configuration would warrant a -1 vote. > >
