4c13922961
People who want smaller stack at any cost may use it to reduce cp's stack usage (FEATURE_COPYBUF_KB=1). Desktop people may get faster copy of big files (FEATURE_COPYBUF_KB=32 is ~30% faster than 4kb)
141 lines
3.7 KiB
Plaintext
141 lines
3.7 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see scripts/kbuild/config-language.txt.
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#
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menu "Busybox Library Tuning"
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config PASSWORD_MINLEN
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int "Minimum password length"
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default 6
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range 5 32
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help
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Minimum allowable password length.
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config MD5_SIZE_VS_SPEED
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int " MD5: Trade Bytes for Speed"
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default 2
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range 0 3
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help
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Trade binary size versus speed for the md5sum algorithm.
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Approximate values running uClibc and hashing
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linux-2.4.4.tar.bz2 were:
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user times (sec) text size (386)
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0 (fastest) 1.1 6144
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1 1.4 5392
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2 3.0 5088
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3 (smallest) 5.1 4912
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config FEATURE_FAST_TOP
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bool "Faster /proc scanning code (+100 bytes)"
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default n
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help
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This option makes top (and ps) ~20% faster (or 20% less CPU hungry),
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but code size is slightly bigger.
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config FEATURE_ETC_NETWORKS
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bool "Support for /etc/networks"
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default n
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help
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Enable support for network names in /etc/networks. This is
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a rarely used feature which allows you to use names
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instead of IP/mask pairs in route command.
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config FEATURE_EDITING
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bool "Command line editing"
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default n
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help
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Enable line editing (mainly for shell command line).
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config FEATURE_EDITING_MAX_LEN
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int "Maximum length of input"
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range 128 8192
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default 1024
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depends on FEATURE_EDITING
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help
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Line editing code uses on-stack buffers for storage.
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You may want to decrease this parameter if your target machine
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benefits from smaller stack usage.
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config FEATURE_EDITING_FANCY_KEYS
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bool "Additional editing keys"
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default n
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depends on FEATURE_EDITING
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help
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Enable additonal editing keys (Ctrl-E, Ctrl-U etc).
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Arrow keys, Home/End/Delete and Ctrl-W work even without this option.
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config FEATURE_EDITING_VI
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bool "vi-style line editing commands"
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default n
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depends on FEATURE_EDITING
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help
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Enable vi-style line editing. In shells, this mode can be
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turned on and off with "set -o vi" and "set +o vi".
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config FEATURE_EDITING_HISTORY
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int "History size"
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range 0 99999
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default 15
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depends on FEATURE_EDITING
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help
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Specify command history size.
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config FEATURE_EDITING_SAVEHISTORY
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bool "History saving"
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default n
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depends on ASH && FEATURE_EDITING
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help
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Enable history saving in ash shell.
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config FEATURE_TAB_COMPLETION
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bool "Tab completion"
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default n
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depends on FEATURE_EDITING
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help
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Enable tab completion.
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config FEATURE_USERNAME_COMPLETION
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bool "Username completion"
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default n
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depends on FEATURE_TAB_COMPLETION
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help
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Enable username completion.
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config FEATURE_EDITING_FANCY_PROMPT
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bool "Fancy shell prompts"
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default n
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depends on FEATURE_EDITING
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help
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Setting this option allows for prompts to use things like \w and
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\$ and escape codes.
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config FEATURE_COPYBUF_KB
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int "Copy buffer size, in kilobytes"
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range 1 1024
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default 4
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help
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Size of buffer used by cp, mv, install etc.
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Buffers which are 4 kb or less will be allocated on stack.
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Bigger buffers will be allocated with mmap, with fallback to 4 kb
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stack buffer if mmap fails.
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config MONOTONIC_SYSCALL
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bool "Use clock_gettime(CLOCK_MONOTONIC) syscall"
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default y
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help
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Use clock_gettime(CLOCK_MONOTONIC) syscall for measuring
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time intervals (time, ping, traceroute etc need this).
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Probably requires Linux 2.6+. If not selected, gettimeofday
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will be used instead (which gives wrong results if date/time
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is reset).
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config IOCTL_HEX2STR_ERROR
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bool "Use ioctl names rather than hex values in error messages"
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default y
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help
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Use ioctl names rather than hex values in error messages
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(e.g. VT_DISALLOCATE rather than 0x5608). If disabled this
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saves about 1400 bytes.
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endmenu
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