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- #!/bin/bash
- # Prevent strace from abbreviating arguments?
- # You want the -s strsize option, which specifies the maximum length of a string to display (the default is 32).
- # running siege
- # siege -d10 -c50 http://basereality.test
- #Before reboot
- #[root@vagrant /]# wrk -t12 -c20 -d30s http://basereality.test/
- #Running 30s test @ http://basereality.test/
- # 12 threads and 20 connections
- # Thread Stats Avg Stdev Max +/- Stdev
- # Latency 264.55ms 60.96ms 574.54ms 79.09%
- # Req/Sec 3.43 0.97 6.00 80.23%
- # 1398 requests in 30.02s, 8.29MB read
- #Requests/sec: 46.57
- #Transfer/sec: 282.85KB
- # By contrast, -etrace=!open means to trace every system call except open. In addition, the special values all and none have the obvious meanings.
- #-etrace=!open
- #-e trace=!write.
- # -s strsize
- # Specify the maximum string size to print (the default is 32). Note that
- # filenames are not considered strings and are always printed in full.
- rm -rf trc/*.trc
- #this check doesn't work, as the script gives a compile error before it's run.
- if [[ ! $BASH ]]
- then
- echo "This script needs to run in bash, not sh."
- exit -1
- fi
- additional_strace_args="$1"
- mkdir trc
- MASTER_PID=$(ps auwx | grep php-fpm | grep -v grep | grep 'master process' | cut -d ' ' -f 7)
- # ls -l /tmp/foobar | awk '{print $1"\t"$9}'
- # This code takes some input, such as this:
- # -rw-rw-rw- 1 root root 1 Jul 14 1997 tmpmsg
- # and generates output like this:
- # -rw-rw-rw- tmpmsg
- #shows total of calls
- summarise=""
- # summarise="-c"
- #Jimbo you probably want to start with summarise enabled.
- nohup strace -r $summarise -p $MASTER_PID -ff -o ./trc/master.follow.trc >"trc/master.$MASTER_PID.trc" 2>&1 &
- while read -r pid;
- do
- if [[ $pid != $MASTER_PID ]]; then
- #shows individual calls
- #nohup strace -r -p "$pid" $additional_strace_args >"trc/$pid.trc" 2>&1 &
- #shows total of calls
- nohup strace -r $summarise -p "$pid" $additional_strace_args >"trc/$pid.summary.trc" 2>&1 &
- fi
- done < <(pgrep php-fpm)
- #This needs bash not SH
- read -p "Strace running - press [Enter] to stop"
- pkill strace
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