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Loading oh-my-bash.sh takes a long time

Open shuosiw opened this issue 9 months ago • 23 comments

I recently upgraded my Mac from 11.x to 15.x. And I found that it took a lot longer for iterm2 to be ready to enter commands than before. I found that it was mainly loading the oh-my-bash.sh file. And every time I pressed enter, it would freeze.

Image

shuosiw avatar Mar 27 '25 04:03 shuosiw

What is the version of Bash? Could you provide the result of the following command?

$ echo "$BASH_VERSION"

akinomyoga avatar Mar 27 '25 04:03 akinomyoga

https://github.com/ohmyzsh/ohmyzsh/discussions/12642 might be related, though the delay seems to have been observed there even without Oh My Zsh.

akinomyoga avatar Mar 27 '25 04:03 akinomyoga

echo "$BASH_VERSION"

5.1.8(1)-release

i comment this line in ~/.bashrc, then open a new iterm tab. it will be very smooth..

#source $OSH/oh-my-bash.sh

This delay is affecting the user experience a bit now. I temporarily turn it off..

shuosiw avatar Mar 27 '25 04:03 shuosiw

  • One possibility is that the loading of oh-my-bash.sh itself takes time in your environment. Since source oh-my-bash.sh takes 2 seconds in your environment, we should consider this possibility.
  • Another possibility is that the prompt calculation by the theme you selected takes time. Since you reported that it is frozen every time Enter is pressed, this is likely the case.
  • Or maybe, both of the above two problems arise in your environment.

@shuosiw What is your theme (i.e., the value of OSH_THEME in your ~/.bashrc)? Does it happen with any themes? Or does it happen with a specific theme, or does the delay depend on the theme?

akinomyoga avatar Apr 20 '25 04:04 akinomyoga

Issue https://github.com/ohmybash/oh-my-bash/issues/618#issuecomment-2379884571 seems to suggest that the presence of the hg command in the system may cause the long delay.

akinomyoga avatar Apr 20 '25 04:04 akinomyoga

  • One possibility is that the loading of oh-my-bash.sh itself takes time in your environment. Since source oh-my-bash.sh takes 2 seconds in your environment, we should consider this possibility.
  • Another possibility is that the prompt calculation by the theme you selected takes time. Since you reported that it is frozen every time Enter is pressed, this is likely the case.
  • Or maybe, both of the above two problems arise in your environment.

@shuosiw What is your theme (i.e., the value of OSH_THEME in your ~/.bashrc)? Does it happen with any themes? Or does it happen with a specific theme, or does the delay depend on the theme?

OSH_THEME="agnoster"

I try to change to theme "font". And it looks like better than agnoster, but also has a little bit slow.

shuosiw avatar Apr 21 '25 03:04 shuosiw

Issue #618 (comment) seems to suggest that the presence of the hg command in the system may cause the long delay.

I have not install hg command.

$command hg root
-bash: hg：未找到命令

shuosiw avatar Apr 21 '25 04:04 shuosiw

Thank you. I'd like to get the time profile of the initialization and the prompt processing.

For testing purposes, could you follow the following steps and attach the resulting file ~/.oh-my-bash/log/xtrace.agnoster.txt?

  1. Replace the line OSH_THEME="agnoster" in ~/.bashrc with the following settings:
OSH_THEME="agnoster"
exec {BASH_XTRACEFD}> "$OSH/log/xtrace.$OSH_THEME.txt"
PS4='+[$EPOCHREALTIME] $BASH_SOURCE:$LINENO: '
set -x
  1. Start a Bash session.
  2. Run one command (such as 'echo hello')
  3. Exit the session.
  4. You should be able to find a file at $OSH/log/xtrace.agnoster.txt (where $OSH is typically ~/.oh-my-bash). Could you attach the file?

akinomyoga avatar Apr 21 '25 04:04 akinomyoga

Thank you. I'd like to get the time profile of the initialization and the prompt processing.

For testing purposes, could you follow the following steps and attach the resulting file ~/.oh-my-bash/log/xtrace.agnoster.txt?

  1. Replace the line OSH_THEME="agnoster" in ~/.bashrc with the following settings:

OSH_THEME="agnoster" exec {BASH_XTRACEFD}> "$OSH/log/xtrace.$OSH_THEME.txt" PS4='+[$EPOCHREALTIME] $BASH_SOURCE:$LINENO: ' set -x 2. Start a Bash session. 3. Run one command (such as 'echo hello') 4. Exit the session. 5. You should be able to find a file at $OSH/log/xtrace.agnoster.txt (where $OSH is typically ~/.oh-my-bash). Could you attach the file?

@akinomyoga

xtrace.agnoster.txt

shuosiw avatar Apr 22 '25 02:04 shuosiw

Thank you for the results.

I extracted the time-consuming lines from the log.

For the initialization stage,

  0.079887 ++++[1745213862.557008] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: wc -l
  0.077763 ++++[1745213862.070317] /Users/source/.oh-my-bash/lib/functions.sh:102: grep -q '^PAGER='
  0.071503 ++++[1745213862.638289] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: whoami
  0.069016 +++++[1745213860.606026] /Users/source/.oh-my-bash/lib/utils.sh:151: tput colors
  0.068825 +++[1745213862.738972] /Users/source/.oh-my-bash/lib/omb-prompt-base.sh:2: command git rev-parse --is-inside-work-tree
  0.068263 ++++[1745213862.251200] /Users/source/.oh-my-bash/oh-my-bash.sh:125: scutil --get ComputerName
  0.067875 +++++[1745213861.050578] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 3
  0.066986 +++++[1745213861.823616] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 15
  0.066689 +++++[1745213861.439860] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 9
  0.065881 +++++[1745213861.122109] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 4
  0.065827 +++++++[1745213862.390278] /Users/source/.oh-my-bash/lib/utils.sh:492: command ls --color=auto -ld -- /usr/local/bin/git
  0.065680 +++++[1745213860.922649] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 1
  0.065543 ++++[1745213860.533586] /Users/source/.oh-my-bash/tools/check_for_upgrade.sh:60: command rmdir /Users/source/.oh-my-bash/log/update.lock
  0.064322 +++++[1745213861.189422] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 5
  0.064305 ++++[1745213861.938226] /Users/source/.oh-my-bash/lib/grep.sh:5: grep --color=auto ''
  0.064229 ++++[1745213860.466217] /Users/source/.oh-my-bash/tools/check_for_upgrade.sh:58: command mkdir -p /Users/source/.oh-my-bash/log/update.lock
  0.063906 ++++[1745213862.149966] /Users/source/.oh-my-bash/lib/functions.sh:102: grep -q '^LESS='
  0.063354 +++++[1745213861.572149] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 11
  0.063035 +++++[1745213861.507901] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 10
  0.062007 +++++[1745213861.697436] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 13
  0.061725 +++++[1745213860.859746] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 0
  0.061371 +++++[1745213861.760667] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 14
  0.061327 +++++[1745213860.676045] /Users/source/.oh-my-bash/lib/utils.sh:152: tput bold
  0.061223 ++++[1745213862.003948] /Users/source/.oh-my-bash/lib/grep.sh:5: grep --exclude-dir=.cvs ''
  0.060339 +++++++[1745213862.329617] /Users/source/.oh-my-bash/lib/bourne-shell.sh:74: command ls --color=auto /Users/source
  0.060272 +++++[1745213861.317071] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 7
  0.060189 +++++[1745213861.255303] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 6
  0.060074 +++++[1745213860.798452] /Users/source/.oh-my-bash/lib/utils.sh:154: tput sgr0
  0.059943 +++++[1745213861.378706] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 8
  0.059832 +++++[1745213860.989529] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 2
  0.059297 +++++[1745213861.636757] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 12
  0.059035 +++++[1745213860.738391] /Users/source/.oh-my-bash/lib/utils.sh:153: tput smul

For the genuine prompt processing,

  0.087103 ++++[1745213866.778370] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: wc -l
  0.071164 +++[1745213866.964541] /Users/source/.oh-my-bash/lib/omb-prompt-base.sh:2: command git rev-parse --is-inside-work-tree
  0.066069 ++++[1745213866.867274] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: whoami
  0.008218 +++[1745213866.769858] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:5: [[ 501 -eq 0 ]]
  0.002631 +++[1745213866.765275] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:4: local CURRENT_BG=NONE
  0.001814 +++[1745213866.947104] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:19: [[ -n black ]]
  0.001685 ++++[1745213866.951428] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: echo 30
  0.001673 +++[1745213867.035810] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: hg id
  0.001664 +++[1745213866.865610] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:5: prompt_context
  0.001636 +++[1745213866.953922] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:29: local -a intermediate
  0.001632 ++++[1745213867.038725] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: echo 0
  0.001580 +++[1745213866.942374] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:12: codes=("${codes[@]}" $(text_effect reset))
  0.001473 +++[1745213866.949774] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:28: [[ blue != black ]]
  0.001398 +++[1745213866.939465] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ 0 -ne 0 ]]
  0.001387 +++[1745213866.957066] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ 0 -ne 0 ]]
  0.001305 +++[1745213866.959471] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:31: PR='\[^[[0m\]\[^[[0;40m\] source@\h \[^[[30;44m\]M-nM-^BM-0'
  0.001255 +++[1745213866.944976] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:14: [[ -n blue ]]
  0.001226 +++[1745213867.045095] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:6: local -a reset
  0.001224 +++[1745213866.933742] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:12: codes=("${codes[@]}" $(text_effect reset))
  0.001222 +++[1745213867.041025] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: local -a codes
  0.001209 +++[1745213866.962022] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ 0 -ne 0 ]]
  0.001164 +++[1745213866.935575] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:14: [[ -n black ]]
  0.001150 +++[1745213867.043294] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:4: PR='\[^[[0m\]\[^[[0;40m\] source@\h \[^[[30;44m\]M-nM-^BM-0\[^[[0;44;30m\] \w \[^[[0;34m\]M-nM-^BM-0'
  0.001063 +++[1745213867.037531] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ -n blue ]]
  0.001052 +++[1745213866.937622] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:19: [[ -n default ]]

These results imply that every exec seems to take about 70 milliseconds, which is significantly slower compared to modern environments. Since there are many exec in both the initialization stage and prompt processing, these delays are accumulated and cause the observed long delay.

@shuosiw To confirm this delay is not specific in the initialization by Oh My Bash, could you provide the result of the following command (blue characters are the result in my environment)?

$ time tput setaf 1 &>/dev/null

real    0m0.002s
user    0m0.000s
sys     0m0.002s

akinomyoga avatar Apr 22 '25 05:04 akinomyoga

Thank you for the results.

I extracted the time-consuming lines from the log. For the initialization stage,

  0.079887 ++++[1745213862.557008] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: wc -l
  0.077763 ++++[1745213862.070317] /Users/source/.oh-my-bash/lib/functions.sh:102: grep -q '^PAGER='
  0.071503 ++++[1745213862.638289] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: whoami
  0.069016 +++++[1745213860.606026] /Users/source/.oh-my-bash/lib/utils.sh:151: tput colors
  0.068825 +++[1745213862.738972] /Users/source/.oh-my-bash/lib/omb-prompt-base.sh:2: command git rev-parse --is-inside-work-tree
  0.068263 ++++[1745213862.251200] /Users/source/.oh-my-bash/oh-my-bash.sh:125: scutil --get ComputerName
  0.067875 +++++[1745213861.050578] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 3
  0.066986 +++++[1745213861.823616] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 15
  0.066689 +++++[1745213861.439860] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 9
  0.065881 +++++[1745213861.122109] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 4
  0.065827 +++++++[1745213862.390278] /Users/source/.oh-my-bash/lib/utils.sh:492: command ls --color=auto -ld -- /usr/local/bin/git
  0.065680 +++++[1745213860.922649] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 1
  0.065543 ++++[1745213860.533586] /Users/source/.oh-my-bash/tools/check_for_upgrade.sh:60: command rmdir /Users/source/.oh-my-bash/log/update.lock
  0.064322 +++++[1745213861.189422] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 5
  0.064305 ++++[1745213861.938226] /Users/source/.oh-my-bash/lib/grep.sh:5: grep --color=auto ''
  0.064229 ++++[1745213860.466217] /Users/source/.oh-my-bash/tools/check_for_upgrade.sh:58: command mkdir -p /Users/source/.oh-my-bash/log/update.lock
  0.063906 ++++[1745213862.149966] /Users/source/.oh-my-bash/lib/functions.sh:102: grep -q '^LESS='
  0.063354 +++++[1745213861.572149] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 11
  0.063035 +++++[1745213861.507901] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 10
  0.062007 +++++[1745213861.697436] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 13
  0.061725 +++++[1745213860.859746] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 0
  0.061371 +++++[1745213861.760667] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 14
  0.061327 +++++[1745213860.676045] /Users/source/.oh-my-bash/lib/utils.sh:152: tput bold
  0.061223 ++++[1745213862.003948] /Users/source/.oh-my-bash/lib/grep.sh:5: grep --exclude-dir=.cvs ''
  0.060339 +++++++[1745213862.329617] /Users/source/.oh-my-bash/lib/bourne-shell.sh:74: command ls --color=auto /Users/source
  0.060272 +++++[1745213861.317071] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 7
  0.060189 +++++[1745213861.255303] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 6
  0.060074 +++++[1745213860.798452] /Users/source/.oh-my-bash/lib/utils.sh:154: tput sgr0
  0.059943 +++++[1745213861.378706] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 8
  0.059832 +++++[1745213860.989529] /Users/source/.oh-my-bash/lib/utils.sh:168: tput setaf 2
  0.059297 +++++[1745213861.636757] /Users/source/.oh-my-bash/lib/utils.sh:185: tput setaf 12
  0.059035 +++++[1745213860.738391] /Users/source/.oh-my-bash/lib/utils.sh:153: tput smul

For the genuine prompt processing,

  0.087103 ++++[1745213866.778370] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: wc -l
  0.071164 +++[1745213866.964541] /Users/source/.oh-my-bash/lib/omb-prompt-base.sh:2: command git rev-parse --is-inside-work-tree
  0.066069 ++++[1745213866.867274] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:1: whoami
  0.008218 +++[1745213866.769858] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:5: [[ 501 -eq 0 ]]
  0.002631 +++[1745213866.765275] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:4: local CURRENT_BG=NONE
  0.001814 +++[1745213866.947104] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:19: [[ -n black ]]
  0.001685 ++++[1745213866.951428] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: echo 30
  0.001673 +++[1745213867.035810] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: hg id
  0.001664 +++[1745213866.865610] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:5: prompt_context
  0.001636 +++[1745213866.953922] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:29: local -a intermediate
  0.001632 ++++[1745213867.038725] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: echo 0
  0.001580 +++[1745213866.942374] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:12: codes=("${codes[@]}" $(text_effect reset))
  0.001473 +++[1745213866.949774] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:28: [[ blue != black ]]
  0.001398 +++[1745213866.939465] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ 0 -ne 0 ]]
  0.001387 +++[1745213866.957066] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ 0 -ne 0 ]]
  0.001305 +++[1745213866.959471] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:31: PR='\[^[[0m\]\[^[[0;40m\] source@\h \[^[[30;44m\]M-nM-^BM-0'
  0.001255 +++[1745213866.944976] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:14: [[ -n blue ]]
  0.001226 +++[1745213867.045095] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:6: local -a reset
  0.001224 +++[1745213866.933742] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:12: codes=("${codes[@]}" $(text_effect reset))
  0.001222 +++[1745213867.041025] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:3: local -a codes
  0.001209 +++[1745213866.962022] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ 0 -ne 0 ]]
  0.001164 +++[1745213866.935575] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:14: [[ -n black ]]
  0.001150 +++[1745213867.043294] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:4: PR='\[^[[0m\]\[^[[0;40m\] source@\h \[^[[30;44m\]M-nM-^BM-0\[^[[0;44;30m\] \w \[^[[0;34m\]M-nM-^BM-0'
  0.001063 +++[1745213867.037531] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:2: [[ -n blue ]]
  0.001052 +++[1745213866.937622] /Users/source/.oh-my-bash/themes/agnoster/agnoster.theme.sh:19: [[ -n default ]]

These results imply that every exec seems to take about 70 milliseconds, which is significantly slower compared to modern environments. Since there are many exec in both the initialization stage and prompt processing, these delays are accumulated and cause the observed long delay.

@shuosiw To confirm this delay is not specific in the initialization by Oh My Bash, could you provide the result of the following command (blue characters are the result in my environment)?

$ time tput setaf 1 &>/dev/null

real 0m0.002s user 0m0.000s sys 0m0.002s

I've tested it a few times, the longest one is the one below, and most of the others are around 0.9s

time tput setaf 1

real	0m0.102s
user	0m0.069s
sys	0m0.028s

The hardware configuration of my macOS is (Intel NUC8i5BEH):

  • i5-8259U CPU
  • 16G MEM
  • WD SN750 500G nvme ssd

shuosiw avatar Apr 22 '25 06:04 shuosiw

Mine is this, but I think the slow performance is due to the operating system rather than the hardware.

  • cpu: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz
  • ram: SK Hynix 9210EE81 8 GB + Samsung 993831AF 8 GB
  • disk: WDC WD20EARS-00M 1.82 TiB hdd

akinomyoga avatar Apr 22 '25 07:04 akinomyoga

Previously, macOS 11.5.1 was normal, but after the major version was upgraded to 15.3.2, it became very stuck.

But on another macbook air M1, the response to execute the above tput command is very fast, basically 2-3ms

shuosiw avatar Apr 22 '25 07:04 shuosiw

But on another macbook air M1, the response to execute the above tput command is very fast, basically 2-3ms

Thank you for this information. I tried to search if there is any information about Intel macOS, but I couldn't find any.

I also asked ChatGPT about if it can find something. ChatGPT suggested something, but they don't seem to be particularly related to the present situation that you experience. Here's my conversation with ChatGPT: slow-exec-ChatGPT.pdf.

akinomyoga avatar Apr 22 '25 07:04 akinomyoga

There are 20 spawning of tput, and I think we can provide an option to skip these. Then, I think the startup time can be reduced by 1.4 sec. However, the startup would still be slow after that because many other processes are spawned in the initialization stage.

akinomyoga avatar Apr 22 '25 08:04 akinomyoga

There are 20 spawning of tput, and I think we can provide an option to skip these.

I pushed commit c8a79b6 to the master. Could you update Oh My Bash by running upgrade_oh_my_bash and put OMB_TERM_USE_TPUT=no in your ~/.bashrc (before the line source "$OSH"/oh-my-bash.sh)? Then, you can restart a Bash session to see if the situation for the initialization is improved.

akinomyoga avatar Apr 22 '25 08:04 akinomyoga

  1. Replace the line OSH_THEME="agnoster" in ~/.bashrc with the following settings: 
    OSH_THEME="agnoster"
exec {BASH_XTRACEFD}> "$OSH/log/xtrace.$OSH_THEME.txt"
PS4='+[$EPOCHREALTIME] $BASH_SOURCE:$LINENO: '
set -x
  2. Start a Bash session.
  3. Run one command (such as 'echo hello')
  4. Exit the session.
  5. You should be able to find a file at $OSH/log/xtrace.agnoster.txt (where $OSH is typically ~/.oh-my-bash). Could you attach the file?

I forgot to tell you, but you can revert the above change in ~/.bashrc after testing.

akinomyoga avatar Apr 22 '25 08:04 akinomyoga

i have updated.

Updating Oh My Bash
remote: Enumerating objects: 142, done.
export OSH=/Users/source/.oh-my-bash
remote: Counting objects: 100% (142/142), done.
remote: Compressing objects: 100% (66/66), done.
remote: Total 123 (delta 75), reused 94 (delta 56), pack-reused 0 (from 0)
接收对象中: 100% (123/123), 17.33 KiB | 4.33 MiB/s, 完成.
处理 delta 中: 100% (75/75), 完成 15 个本地对象.
来自 https://github.com/ohmybash/oh-my-bash
 * branch            master     -> FETCH_HEAD
   5f41bea..c8a79b6  master     -> origin/master
更新 5f41bea..c8a79b6
Fast-forward
 CONTRIBUTING.md                   |  2 +-
 README.md                         |  7 +++++++
 custom/aliases/example.aliases.sh |  8 ++++++++
 lib/bourne-shell.sh               | 17 ++++++++++++++++-
 lib/utils.sh                      |  7 +++++--
 oh-my-bash.sh                     | 25 +------------------------
 plugins/README.md                 | 61 +++++++++++++++++++++++++++++++------------------------------
 plugins/cargo/README.md           |  3 +++
 plugins/cargo/cargo.plugin.sh     | 19 +++++++++++++++++++
 plugins/nvm/nvm.plugin.sh         | 42 ++++++++++++++++++++++--------------------
 templates/bashrc.osh-template     |  9 +++++++++
 themes/random/README.md           | 23 +++++++++++++++++++++++
 themes/random/random.theme.bash   | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 tools/check_for_upgrade.sh        |  2 +-
 14 files changed, 200 insertions(+), 79 deletions(-)
 create mode 100644 plugins/cargo/README.md
 create mode 100644 plugins/cargo/cargo.plugin.sh
 mode change 100644 => 100755 plugins/nvm/nvm.plugin.sh
 create mode 100644 themes/random/README.md
 create mode 100644 themes/random/random.theme.bash
         __                          __               __
  ____  / /_     ____ ___  __  __   / /_  ____ ______/ /_
 / __ \/ __ \   / __ `__ \/ / / /  / __ \/ __ `/ ___/ __ \
/ /_/ / / / /  / / / / / / /_/ /  / /_/ / /_/ (__  ) / / /
\____/_/ /_/  /_/ /_/ /_/\__, /  /_.___/\__,_/____/_/ /_/
                        /____/
Hooray! Oh My Bash has been updated and/or is at the current version.
To keep up on the latest news and updates, follow us on GitHub: https://github.com/ohmybash/oh-my-bash

and here it's my .bashrc file:

export OSH=/Users/source/.oh-my-bash
export OSH_THEME="agnoster"
export OMB_TERM_USE_TPUT=no

#OSH_THEME="font"
DISABLE_LS_COLORS="true"
completions=(
  git
  composer
  ssh
)
aliases=(
  general
)
plugins=(
  git
  bashmarks
)
source $OSH/oh-my-bash.sh
export LSCOLORS=gxfxcxdxbxegedabagacad
export CLICOLOR=1
export CLICOLOR_FORCE=1
bind 'TAB:menu-complete'
bind 'set show-all-if-ambiguous on'

It look like better when i open a new tab. THANKS!!

$ export OMB_TERM_USE_TPUT=no
$ time source $OSH/oh-my-bash.sh

real	0m0.555s
user	0m0.496s
sys	0m0.171s

shuosiw avatar Apr 22 '25 08:04 shuosiw

also i try to update tput with brew, but nothing happend.

$ /usr/local/opt/ncurses/bin/tput -V
ncurses 6.5.20240427

$ time /usr/local/opt/ncurses/bin/tput setaf 1

real	0m0.082s
user	0m0.056s
sys	0m0.022s

shuosiw avatar Apr 22 '25 08:04 shuosiw

I think another part that we can improve is these lines in the agnoster theme:

https://github.com/ohmybash/oh-my-bash/blob/2575d9f946ab317d4d06a88100b22417567455b3/themes/agnoster/agnoster.theme.sh#L432-L434

  • First of all, we don't really have to use the command substitution $() to calculate the results of fg_color and ansi_single.
  • Also, to test whether the output of jobs has zero lines, one doesn't need to use wc -l to count the lines. One can simply test whether the output of jobs is empty. To do that, one can write [[ $(jobs -l) ]].
  • However, the purpose of [[ $(jobs -l | wc -l) -eq 0 ]] is test whether any jobs are running/pending. This can be simply achieved by compgen -j 2>/dev/null.

akinomyoga avatar Apr 27 '25 13:04 akinomyoga

I pushed 278d3ee. This should improve the prompt performance of the agnoster theme (Note: this doesn't affect the initialization time).

akinomyoga avatar Apr 27 '25 15:04 akinomyoga

Any chance you have kubectl completion enabled? Disabling that solved it for me. #679

Pithikos avatar May 06 '25 06:05 Pithikos

We already performed profiling, so we already know all the bottlenecks in the OP's situation. The kubectl completion is unrelated here.

akinomyoga avatar May 06 '25 07:05 akinomyoga