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Commands tagged cpu

Commands tagged cpu from sorted by
Terminal - Commands tagged cpu - 5 results
echo 'some command' | batch
2010-07-14 03:08:31
User: kniht
Functions: echo
Tags: cpu schedule load delay
6
Up
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Delay execution until load average falls under 1.5

If shell escaping of the command is problematic, you can write the command to a file first:

batch <somefile

Or read it:

read -re && echo "$REPLY" | batch

Or, if your shell supports it, you can eliminate echo:

read -re && batch <<<$REPLY

("man batch" lists 1.5 for me, but I don't know how widely it differs.)

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( ( while [ 2000 -ge "$(free -m | awk '/buffers.cache:/ {print $4}')" ] || [ $(echo "$(uptime | awk '{print $10}' | sed -e 's/,$//' -e 's/,/./') >= $(grep -c ^processor /proc/cpuinfo)" | bc) -eq 1 ]; do sleep 10; done; my-command > output.txt ) & )
2010-07-13 09:12:11
User: michelsberg
Functions: echo sleep
Tags: memory Linux cpu schedule load delay
3
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delay execution of a command that needs lots of memory and CPU time until the resources are available

[ 2000 -ge "$(free -m | awk '/buffers.cache:/ {print $4}')" ] returns true if less than 2000 MB of RAM are available, so adjust this number to your needs.

[ $(echo "$(uptime | awk '{print $10}' | sed -e 's/,$//' -e 's/,/./') >= $(grep -c ^processor /proc/cpuinfo)" | bc) -eq 1 ] returns true if the current machine load is at least equal to the number of CPUs.

If either of the tests returns true we wait 10 seconds and check again. If both tests return false, i.e. 2GB are available and machine load falls below number of CPUs, we start our command and save it's output in a text file.

The ( ( ... ) & ) construct lets the command run in background even if we log out. See http://www.commandlinefu.com/commands/view/3115/ .

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command ps wwo pid,user,group,vsize:8,size:8,sz:6,rss:6,pmem:7,pcpu:7,time:7,wchan,sched=,stat,flags,comm,args k -vsz -A|sed -u '/^ *PID/d;10q'
2010-05-18 18:41:38
User: AskApache
Functions: command ps sed
Tags: cpu usage memory memory usage bash cpu sort sed process ps askapache processes
0
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Viewing Top Processes according to cpu, mem, swap size, etc.

I've wanted this for a long time, finally just sat down and came up with it. This shows you the sorted output of ps in a pretty format perfect for cron or startup scripts. You can sort by changing the k -vsz to k -pmem for example to sort by memory instead.

If you want a function, here's one from my http://www.askapache.com/linux-unix/bash_profile-functions-advanced-shell.html

aa_top_ps(){ local T N=${1:-10};T=${2:-vsz}; ps wwo pid,user,group,vsize:8,size:8,sz:6,rss:6,pmem:7,pcpu:7,time:7,wchan,sched=,stat,flags,comm,args k -${T} -A|sed -u "/^ *PID/d;${N}q"; }
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sudo lshw -C cpu|grep width
2009-09-24 11:43:00
User: sliceoflinux
Functions: grep sudo
Tags: cpu 32 64 lshw
3
Up
Down
32 bits or 64 bits?
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taskset -c 0 your_command
2009-02-28 22:38:02
User: Alanceil
Functions: taskset
Tags: Linux affinity cpu multicore
17
Up
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Start a command on only one CPU core

This is useful if you have a program which doesn't work well with multicore CPUs. With taskset you can set its CPU affinity to run on only one core.

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