[BUG] sched: O(n) ready-to-run insertion increases interrupt latency

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Valutazione

Difficoltà
4/5
Tempo stimato
3-5 giorni
Idoneità per principianti
48/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Attiva
Stack tecnologico
c, embedded-iot
Ambito
operating-systems, performance

Direzione di ricerca

Read sched/sched/sched.h and sched/sched/sched_addreadytorun.c to trace the ready-list insertion path, then inspect sched/semaphore/sem_post.c for the critical-section caller. Start by reproducing the supplied ready-list benchmark on esp32-devkitc:readylist or sim:readylist. Done means preserving FIFO order among equal priorities while reducing insertion work and verifying the reported scan count and interrupt cost across the listed ready-task counts.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

Arch: simulator Arch: xtensa Area: Kernel OS: Mac Type: Bug
Description / Steps to reproduce the issue

Description

Inserting a task into g_readytorun is a linear walk done with interrupts disabled. Each ready task at or above the new task's priority adds a fixed cost to the critical section. On an ESP32 at 240 MHz, a sem_post() from the timer interrupt took 324 cycles with no other ready tasks and 3460 cycles (14.4 µs) with 224 ready tasks at the same priority. The interrupt latency of the system therefore depends on how many tasks are ready, not only on the code that runs in interrupt handlers.

Root cause

nxsched_add_prioritized() walks the list from the head while sched_priority <= next->sched_priority. It is called from nxsched_add_readytorun(), which callers such as nxsem_post_slow() must call inside enter_critical_section(), because the list is shared with interrupt handlers. The <= keeps FIFO order among equal priorities, so the walk passes every ready task of equal or higher priority. The same path runs for a sem_post() from a thread and for a priority change.

Reproduction

Measurement code:

./tools/configure.sh esp32-devkitc:readylist        # or sim:readylist
make -j && make flash ESPTOOL_PORT=<port> ESPTOOL_BINDIR=./
nsh> readylist -n 224 -s 56 -i 200 -c -w 210        # baseline: woken task above every ready task
nsh> readylist -n 224 -s 32 -i 200 -c               # worst case: ready tasks at the woken task's priority

The app keeps N tasks ready, wakes a task from a watchdog callback in the timer interrupt, and reports the cycles spent in sem_post(). With CONFIG_SCHED_READYLIST_STATS it also reports the number of list entries passed.

Benchmark results

ESP32-D0WD-V3 (rev 3.1), single core, 240 MHz, CCOUNT cycle counter. 200 wake-ups for each row. Ready tasks at the woken task's priority:

N ready tasks Entries passed Cycles in sem_post()
0 1 324
32 33 772
64 65 1220
128 129 2116
192 193 3012
224 225 3460
  • In this configuration, each entry cost 14.0 cycles (58 ns). The minimum, median and maximum were the same in every row.
  • The entries-passed count matched a full scan of the list on every wake-up. sim:readylist gave the same counts.
  • Ready tasks below the woken task's priority, blocked tasks, and a woken task above every ready task did not change the cost: 324 cycles at every N up to 224.

We used Claude (Anthropic) to help trace the code and write the measurement tools; all measurements are from an ESP32-WROOM-32E

On which OS does this issue occur?

[OS: Mac]

What is the version of your OS?

macOS 27.2 (Darwin 27.2.0), arm64

NuttX Version

master

Issue Architecture

[Arch: xtensa], [Arch: simulator]

Issue Area

[Area: Kernel]

Host information
make host_info (esp32-devkitc:readylist, ESP32-WROOM-32E connected) 
NuttX configuration options:
  CONFIG_HOST_MACOS=y
  CONFIG_APPS_DIR="../apps"
  CONFIG_BASE_DEFCONFIG="esp32-devkitc:readylist"
  CONFIG_BUILD_FLAT=y
  CONFIG_INTELHEX_BINARY=y
  CONFIG_OUTPUT_STRIP_PATHS=y
  CONFIG_ARCH_HAVE_STDARG_H=y
  CONFIG_ARCH_HAVE_SETJMP=y
  CONFIG_ARCH_NONE_DEBUG_H=y
  CONFIG_FORTIFY_SOURCE=0
  CONFIG_NDEBUG=y
  CONFIG_DEBUG_ALERT=y
  CONFIG_SCHED_DUMP_TASKS=y
  CONFIG_SCHED_DUMP_STACK=y
  CONFIG_ARCH_HAVE_STACKCHECK=y
  CONFIG_STACK_USAGE_WARNING=0
  CONFIG_ARCH_HAVE_CUSTOMOPT=y
  CONFIG_DEBUG_FULLOPT=y
  CONFIG_LTO_NONE=y
  CONFIG_DEBUG_OPT_UNUSED_SECTIONS=y
  CONFIG_DEBUG_LINK_MAP=y
  CONFIG_ARCH_XTENSA=y
  CONFIG_ARCH="xtensa"
  CONFIG_ARCH_CHIP="esp32"
  CONFIG_ESPRESSIF_CHIP_SERIES="esp32"
  CONFIG_ESPRESSIF_NUM_CPUS=2
  CONFIG_ESPRESSIF_LOG_LEVEL_NONE=y
  CONFIG_ESPRESSIF_LOG_LEVEL=0
  CONFIG_ESPRESSIF_SIMPLE_BOOT=y
  CONFIG_ESPRESSIF_FLASH_MODE_DIO=y
  CONFIG_ESPRESSIF_FLASH_FREQ_40M=y
  CONFIG_ESPRESSIF_FLASH_FREQ="40m"
  CONFIG_ARCH_CHIP_ESP32=y
  CONFIG_ARCH_FAMILY_LX6=y
  CONFIG_XTENSA_CP_INITSET=0x0001
  CONFIG_XTENSA_TOOLCHAIN_ESP=y
  CONFIG_ARCH_CHIP_ESP32WROVER=y
  CONFIG_ESP32_DUAL_CPU=y
  CONFIG_ESP32_FLASH_4M=y
  CONFIG_ESP32_FLASH_DETECT=y
  CONFIG_ESP32_PSRAM_8M=y
  CONFIG_ESP32_ESP32DXWDXX=y
  CONFIG_ESP32_DEFAULT_CPU_FREQ_240=y
  CONFIG_ESP32_DEFAULT_CPU_FREQ_MHZ=240
  CONFIG_ESP32_XTAL_40MZ=y
  CONFIG_ESP_PHY_IRQSTATE_FLAGS_NUMBER=3
  CONFIG_ESP32_UART=y
  CONFIG_ESP32_RTC=y
  CONFIG_ESP32_UART0=y
  CONFIG_ESP32_BT_RESERVE_DRAM=0
  CONFIG_ESP32_TRACEMEM_RESERVE_DRAM=0
  CONFIG_ESP32_ULP_COPROC_RESERVE_MEM=0
  CONFIG_ESP32_UART0_TXPIN=1
  CONFIG_ESP32_UART0_RXPIN=3
  CONFIG_ESP32_UART_RXFIFO_FULL_THRHD=112
  CONFIG_ESP32_FLASH_MODE_DIO=y
  CONFIG_ESP32_FLASH_FREQ_40M=y
  CONFIG_ESP32_RTC_CLK_SRC_INT_RC=y
  CONFIG_ARCH_TOOLCHAIN_GNU=y
  CONFIG_ARCH_VECNOTIRQ=y
  CONFIG_ARCH_HAVE_TEXT_HEAP=y
  CONFIG_ARCH_HAVE_MULTICPU=y
  CONFIG_ARCH_HAVE_VFORK=y
  CONFIG_ARCH_HAVE_FPU=y
  CONFIG_ARCH_HAVE_MPU=y
  CONFIG_ARCH_HAVE_RESET=y
  CONFIG_ARCH_HAVE_THREAD_LOCAL=y
  CONFIG_ARCH_HAVE_SYSCALL_HOOKS=y
  CONFIG_ARCH_HAVE_BACKTRACE=y
  CONFIG_ARCH_HAVE_DEBUG=y
  CONFIG_ARCH_HAVE_PERF_EVENTS=y
  CONFIG_ARCH_PERF_EVENTS=y
  CONFIG_ARCH_HAVE_BOOTLOADER=y
  CONFIG_ARCH_HAVE_CPUINFO=y
  CONFIG_ARCH_CPUINFO_FREQ_KHZ=0
  CONFIG_ARCH_HAVE_TCBINFO=y
  CONFIG_ARCH_FPU=y
  CONFIG_NCPUS=1
  CONFIG_ARCH_STACKDUMP=y
  CONFIG_ARCH_STACKDUMP_MAX_LENGTH=0
  CONFIG_ARCH_MINIMAL_VECTORTABLE=y
  CONFIG_ARCH_MINIMAL_VECTORTABLE_DYNAMIC=y
  CONFIG_ARCH_IRQ_TO_NDX=y
  CONFIG_ARCH_NUSER_INTERRUPTS=2
  CONFIG_BOARD_LOOPSPERMSEC=16717
  CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
  CONFIG_ARCH_INTERRUPTSTACK=0
  CONFIG_BOOT_RUNFROMFLASH=y
  CONFIG_RAM_START=0x20000000
  CONFIG_RAM_SIZE=114688
  CONFIG_FLASH_START=0x0
  CONFIG_FLASH_SIZE=0
  CONFIG_ARCH_BOARD_ESP32_DEVKITC=y
  CONFIG_ARCH_BOARD="esp32-devkitc"
  CONFIG_ARCH_HAVE_LEDS=y
  CONFIG_ARCH_HAVE_BUTTONS=y
  CONFIG_ARCH_BOARD_COMMON=y
  CONFIG_BOARD_CRASHDUMP_NONE=y
  CONFIG_BOARDCTL=y
  CONFIG_BOARDCTL_MKRD=y
  CONFIG_BOARD_MEMORY_RANGE=""
  CONFIG_DISABLE_OS_API=y
  CONFIG_USEC_PER_TICK=10000
  CONFIG_TIMER_ADJUST_USEC=0
  CONFIG_START_YEAR=2011
  CONFIG_START_MONTH=12
  CONFIG_START_DAY=6
  CONFIG_PREALLOC_TIMERS=4
  CONFIG_IRQ_NWORKS=8
  CONFIG_IRQ_WORK_SECTION=""
  CONFIG_IRQ_WORK_STACKSIZE=2048
  CONFIG_INIT_ENTRY=y
  CONFIG_INIT_ARGS=""
  CONFIG_INIT_STACKSIZE=3072
  CONFIG_INIT_PRIORITY=100
  CONFIG_INIT_ENTRYPOINT="nsh_main"
  CONFIG_INIT_ENTRYNAME="nsh_main"
  CONFIG_RR_INTERVAL=200
  CONFIG_TASK_NAME_SIZE=31
  CONFIG_SCHED_WAITPID=y
  CONFIG_PTHREAD_MUTEX_BOTH=y
  CONFIG_PTHREAD_MUTEX_DEFAULT_UNSAFE=y
  CONFIG_PTHREAD_MUTEX_DEFAULT_PRIO_NONE=y
  CONFIG_SCHED_IRQMONITOR=y
  CONFIG_SCHED_READYLIST_STATS=y
  CONFIG_SCHED_CPULOAD_NONE=y
  CONFIG_SCHED_CPULOAD_TICKSPERSEC=100
  CONFIG_SCHED_PROFILE_TICKSPERSEC=1000
  CONFIG_SCHED_STACK_RECORD=0
  CONFIG_DEV_CONSOLE=y
  CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=8
  CONFIG_FILE_STREAM=y
  CONFIG_BOARD_LATE_INITIALIZE=y
  CONFIG_BOARD_INITTHREAD_STACKSIZE=2048
  CONFIG_BOARD_INITTHREAD_PRIORITY=240
  CONFIG_ENABLE_ALL_SIGNALS=y
  CONFIG_SIG_PREALLOC_IRQ_ACTIONS=8
  CONFIG_SIG_PREALLOC_ACTIONS=4
  CONFIG_SIG_ALLOC_ACTIONS=1
  CONFIG_PREALLOC_MQ_MSGS=8
  CONFIG_PREALLOC_MQ_IRQ_MSGS=8
  CONFIG_MQ_MAXMSGSIZE=32
  CONFIG_DEFAULT_TASK_STACKSIZE=2048
  CONFIG_IDLETHREAD_STACKSIZE=3072
  CONFIG_PTHREAD_STACK_MIN=256
  CONFIG_PTHREAD_STACK_DEFAULT=2048
  CONFIG_PTHREAD_GUARDSIZE_DEFAULT=0
  CONFIG_PID_INITIAL_COUNT=16
  CONFIG_ARCH_HAVE_I2CRESET=y
  CONFIG_DEV_NULL=y
  CONFIG_DEV_ZERO=y
  CONFIG_DEV_OPTEE_NONE=y
  CONFIG_DRVR_MKRD=y
  CONFIG_ARCH_HAVE_SERIAL_TERMIOS=y
  CONFIG_SERIAL=y
  CONFIG_SERIAL_CONSOLE=y
  CONFIG_MCU_SERIAL=y
  CONFIG_STANDARD_SERIAL=y
  CONFIG_SERIAL_NPOLLWAITERS=4
  CONFIG_SERIAL_TXBULK=y
  CONFIG_UART0_SERIAL_CONSOLE=y
  CONFIG_UART0_SERIALDRIVER=y
  CONFIG_UART0_RXBUFSIZE=256
  CONFIG_UART0_TXBUFSIZE=256
  CONFIG_UART0_BAUD=115200
  CONFIG_UART0_BITS=8
  CONFIG_UART0_PARITY=0
  CONFIG_UART0_2STOP=0
  CONFIG_SYSLOG=y
  CONFIG_SYSLOG_DEFAULT_MASK=0xff
  CONFIG_SYSLOG_CRLF=y
  CONFIG_SYSLOG_MAX_CHANNELS=1
  CONFIG_SYSLOG_BUFFER=y
  CONFIG_SYSLOG_BUFSIZE=64
  CONFIG_SYSLOG_DEVPATH="/dev/ttyS1"
  CONFIG_SYSLOG_DEFAULT=y
  CONFIG_FS_NEPOLL_DESCRIPTORS=8
  CONFIG_FS_LOCK_BUCKET_SIZE=0
  CONFIG_SENDFILE_BUFSIZE=512
  CONFIG_FS_BACKTRACE=0
  CONFIG_FS_AIO_LISTIO_MAX=256
  CONFIG_FS_MQUEUE_VFS_PATH="/var/mqueue"
  CONFIG_FS_MQUEUE_NPOLLWAITERS=4
  CONFIG_FS_ANONMAP=y
  CONFIG_FS_PROCFS=y
  CONFIG_NXFONTS_PACKEDMSFIRST=y
  CONFIG_MM_DEFAULT_MANAGER=y
  CONFIG_MM_DEFAULT_ALIGNMENT=8
  CONFIG_MM_NODE_GUARDSIZE=0
  CONFIG_MM_REGIONS=3
  CONFIG_MM_MAP_COUNT_MAX=1024
  CONFIG_MM_BACKTRACE=-1
  CONFIG_MM_FREE_DELAYCOUNT_MAX=0
  CONFIG_MM_HEAP_BIGGEST_COUNT=30
  CONFIG_MM_HEAP_MEMPOOL_THRESHOLD=-1
  CONFIG_BINFMT_ELF_RELOCATABLE=y
  CONFIG_STDIO_BUFFER_SIZE=64
  CONFIG_STDIO_LINEBUFFER=y
  CONFIG_NUNGET_CHARS=2
  CONFIG_LIBC_FLOATINGPOINT=y
  CONFIG_LIBC_ATOMIC_TOOLCHAIN=y
  CONFIG_ARCH_LOWPUTC=y
  CONFIG_LIBC_ARCH_MEMCHR=y
  CONFIG_LIBC_ARCH_MEMCPY=y
  CONFIG_LIBC_ARCH_MEMCMP=y
  CONFIG_LIBC_ARCH_MEMMOVE=y
  CONFIG_LIBC_ARCH_MEMSET=y
  CONFIG_LIBC_ARCH_STRCHR=y
  CONFIG_LIBC_ARCH_STRCMP=y
  CONFIG_LIBC_ARCH_STRCPY=y
  CONFIG_LIBC_ARCH_STRLCPY=y
  CONFIG_LIBC_ARCH_STRNCPY=y
  CONFIG_LIBC_ARCH_STRLEN=y
  CONFIG_LIBC_ARCH_STRNLEN=y
  CONFIG_LIBC_PREVENT_STRING_KERNEL=y
  CONFIG_LIBC_PREVENT_MEMCHR_KERNEL=y
  CONFIG_LIBC_PREVENT_MEMCMP_KERNEL=y
  CONFIG_LIBC_PREVENT_MEMCPY_KERNEL=y
  CONFIG_LIBC_PREVENT_MEMMOVE_KERNEL=y
  CONFIG_LIBC_PREVENT_MEMSET_KERNEL=y
  CONFIG_LIBC_PREVENT_STRCAT_KERNEL=y
  CONFIG_LIBC_PREVENT_STRCASECMP_KERNEL=y
  CONFIG_LIBC_PREVENT_STRCHR_KERNEL=y
  CONFIG_LIBC_PREVENT_STRCHRNUL_KERNEL=y
  CONFIG_LIBC_PREVENT_STRCMP_KERNEL=y
  CONFIG_LIBC_PREVENT_STRCPY_KERNEL=y
  CONFIG_LIBC_PREVENT_STRLCAT_KERNEL=y
  CONFIG_LIBC_PREVENT_STRLEN_KERNEL=y
  CONFIG_LIBC_PREVENT_STRLCPY_KERNEL=y
  CONFIG_LIBC_PREVENT_STRNCASECMP_KERNEL=y
  CONFIG_LIBC_PREVENT_STRNCAT_KERNEL=y
  CONFIG_LIBC_PREVENT_STRNLEN_KERNEL=y
  CONFIG_LIBC_PREVENT_STRNCMP_KERNEL=y
  CONFIG_LIBC_PREVENT_STRNCPY_KERNEL=y
  CONFIG_LIBC_PREVENT_STRRCHR_KERNEL=y
  CONFIG_LIBC_HOMEDIR="/"
  CONFIG_LIBC_TMPDIR="/tmp"
  CONFIG_LIBC_MAX_TMPFILE=32
  CONFIG_LIBC_MAX_EXITFUNS=0
  CONFIG_POSIX_SPAWN_DEFAULT_STACKSIZE=2048
  CONFIG_LIBC_HOSTNAME=""
  CONFIG_LIBC_OPEN_MAX=256
  CONFIG_NAME_MAX=32
  CONFIG_PATH_MAX=256
  CONFIG_LINE_MAX=64
  CONFIG_LIBC_STRERROR_ERRNUM=y
  CONFIG_LIBC_STRSIGNAL=y
  CONFIG_LIBC_STRFTIME_C_STANDARD_FORMATS=y
  CONFIG_LIBC_STRFTIME_POSIX_FORMATS=y
  CONFIG_LIBC_STRFTIME_NONSTANDARD_FORMATS=y
  CONFIG_TLS_NELEM=0
  CONFIG_TLS_TASK_NELEM=0
  CONFIG_TLS_NCLEANUP=0
  CONFIG_LIBC_GAISTRERROR_ERRNUM=y
  CONFIG_LIBC_FTOK_VFS_PATH="/var/ftok"
  CONFIG_LIBC_MEMFD_ERROR=y
  CONFIG_LIBC_TEMPBUFFER=y
  CONFIG_LIBC_MAX_TEMPBUFFER=2
  CONFIG_LIBC_TEMPBUFFER_MALLOC=y
  CONFIG_LIBC_MUTEX_BACKTRACE=0
  CONFIG_BUILTIN=y
  CONFIG_APP_REGISTRY=y
  CONFIG_STREAM_OUT_BUFFER_SIZE=64
  CONFIG_STREAM_HEXDUMP_BUFFER_SIZE=128
  CONFIG_STREAM_BASE64_BUFFER_SIZE=128
  CONFIG_LIBC_INLINE_QUEUE=y
  CONFIG_LIBM_TOOLCHAIN=y
  CONFIG_HAVE_CXX=y
  CONFIG_HAVE_CXXINITIALIZE=y
  CONFIG_LIBCXXNONE=y
  CONFIG_LIBMINIABI=y
  CONFIG_CXX_STANDARD="gnu++17"
  CONFIG_CXX_NO_LOCALIZATION=y
  CONFIG_BUILTIN_TOOLCHAIN=y
  CONFIG_COVERAGE_NONE=y
  CONFIG_COVERAGE_DEFAULT_PREFIX_STRIP="0"
  CONFIG_COVERAGE_DEFAULT_PREFIX="/data"
  CONFIG_PROFILE_NONE=y
  CONFIG_NSH_LIBRARY=y
  CONFIG_NSH_PROMPT_STRING="nsh> "
  CONFIG_NSH_PROMPT_MAX=32
  CONFIG_NSH_PROMPT_ENV="PS1"
  CONFIG_NSH_PROMPT_SUFFIX="> "
  CONFIG_NSH_READLINE=y
  CONFIG_NSH_MAXARGUMENTS=12
  CONFIG_NSH_NESTDEPTH=3
  CONFIG_NSH_ALIAS=y
  CONFIG_NSH_ALIAS_MAX_AMOUNT=1
  CONFIG_NSH_BUILTIN_APPS=y
  CONFIG_NSH_DISABLE_DATE=y
  CONFIG_NSH_DISABLE_LOSMART=y
  CONFIG_NSH_DISABLE_LOMTD=y
  CONFIG_NSH_DISABLE_MB=y
  CONFIG_NSH_DISABLE_MH=y
  CONFIG_NSH_DISABLE_MW=y
  CONFIG_NSH_DISABLE_TIMEDATECTL=y
  CONFIG_NSH_CODECS_BUFSIZE=128
  CONFIG_NSH_PROC_MOUNTPOINT="/proc"
  CONFIG_NSH_FILEIOSIZE=512
  CONFIG_NSH_SYSINITSCRIPT="init.d/rc.sysinit"
  CONFIG_NSH_INITSCRIPT="init.d/rcS"
  CONFIG_NSH_SCRIPT_REDIRECT_PATH=""
  CONFIG_NSH_CONSOLE=y
  CONFIG_SYSTEM_DD=y
  CONFIG_SYSTEM_DD_PROGNAME="dd"
  CONFIG_SYSTEM_DD_PRIORITY=100
  CONFIG_SYSTEM_DD_STACKSIZE=2048
  CONFIG_SYSTEM_DD_STATS=y
  CONFIG_SYSTEM_NSH=y
  CONFIG_SYSTEM_NSH_PRIORITY=100
  CONFIG_SYSTEM_NSH_STACKSIZE=2048
  CONFIG_SYSTEM_NSH_PROGNAME="nsh"
  CONFIG_SYSTEM_READLINE=y
  CONFIG_READLINE_HAVE_EXTMATCH=y
  CONFIG_READLINE_ECHO=y
  CONFIG_READLINE_EDIT=y
  CONFIG_TESTING_READYLIST=y
  CONFIG_TESTING_READYLIST_PRIORITY=100
  CONFIG_TESTING_READYLIST_STACKSIZE=2048
  CONFIG_TESTING_READYLIST_FILLER_STACKSIZE=1024

Host system OS:
  macOS 27.2 Darwin <host> 27.2.0 Darwin Kernel Version 27.2.0: Wed Oct 14 23:48:16 PDT 2026; root:xnu-13432.41.4~25/RELEASE_ARM64_T8112 arm64 arm

Host system PATH:
  /Users/felomousa/nuttxspace/.venv/bin
  /Users/felomousa/nuttxspace/toolchains/xtensa-esp-elf/bin
  /opt/homebrew/bin
  /usr/bin
  /bin

Espressif specific information:

Toolchain version:
  esp32: Bootloader image not found
  esp32s2: Bootloader image not found
  esp32s3: Bootloader image not found
  esp32c2: Bootloader image not found
  esp32c3: Bootloader image not found
  esp32c6: Bootloader image not found
  esp32h2: Bootloader image not found

Toolchain version:
  clang: Apple clang version 17.0.0 (clang-1700.0.13.5)
  gcc: Apple clang version 17.0.0 (clang-1700.0.13.5)
  xtensa-esp32-elf-gcc: xtensa-esp-elf-gcc (crosstool-NG esp-14.2.0_20241119) 14.2.0
  xtensa-esp32s2-elf-gcc: xtensa-esp-elf-gcc (crosstool-NG esp-14.2.0_20241119) 14.2.0
  xtensa-esp32s3-elf-gcc: xtensa-esp-elf-gcc (crosstool-NG esp-14.2.0_20241119) 14.2.0
  riscv-none-elf-gcc: Not found
  riscv32-esp-elf-gcc: Not found
  riscv64-unknown-elf-gcc: Not found

Esptool version:
  5.6.0

HAL version:
  Not found

CHIP ID:
  Not found

Flash ID:
  Manufacturer: 5e
  Device: 4016

Security information:
  Not found

Flash status:
  Not found

MAC address:
  <hidden>
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