Software: Apache. PHP/8.1.30 

uname -a: Linux server1.tuhinhossain.com 5.15.0-151-generic #161-Ubuntu SMP Tue Jul 22 14:25:40 UTC
2025 x86_64 

uid=1002(picotech) gid=1003(picotech) groups=1003(picotech),0(root)  

Safe-mode: OFF (not secure)

/usr/src/linux-headers-5.15.0-153/tools/testing/selftests/rcutorture/bin/   drwxr-xr-x
Free 28.31 GB of 117.98 GB (23.99%)
                            Encoder    Tools    Proc.    FTP brute    Sec.    SQL    PHP-code    Update    Self remove    Logout    

Viewing file:     kvm-recheck-rcuscale.sh (1.91 KB)      -rwxr-xr-x

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0+
#
# Analyze a given results directory for rcuscale scalability measurements.
#
# Usage: kvm-recheck-rcuscale.sh resdir
#
# Copyright (C) IBM Corporation, 2016
#
# Authors: Paul E. McKenney <paulmck@linux.ibm.com>

i="$1"
if test -d "$i" -a -r "$i"
then
	:
else
	echo Unreadable results directory: $i
	exit 1
fi
PATH=`pwd`/tools/testing/selftests/rcutorture/bin:$PATH; export PATH
. functions.sh

if kvm-recheck-rcuscale-ftrace.sh $i
then
	# ftrace data was successfully analyzed, call it good!
	exit 0
fi

configfile=`echo $i | sed -e 's/^.*\///'`

sed -e 's/^\[[^]]*]//' < $i/console.log |
awk '
/-scale: .* gps: .* batches:/ {
	ngps = $9;
	nbatches = 1;
}

/-scale: .*writer-duration/ {
	gptimes[++n] = $5 / 1000.;
	sum += $5 / 1000.;
}

END {
	newNR = asort(gptimes);
	if (newNR <= 0) {
		print "No rcuscale records found???"
		exit;
	}
	pct50 = int(newNR * 50 / 100);
	if (pct50 < 1)
		pct50 = 1;
	pct90 = int(newNR * 90 / 100);
	if (pct90 < 1)
		pct90 = 1;
	pct99 = int(newNR * 99 / 100);
	if (pct99 < 1)
		pct99 = 1;
	div = 10 ** int(log(gptimes[pct90]) / log(10) + .5) / 100;
	print "Histogram bucket size: " div;
	last = gptimes[1] - 10;
	count = 0;
	for (i = 1; i <= newNR; i++) {
		current = div * int(gptimes[i] / div);
		if (last == current) {
			count++;
		} else {
			if (count > 0)
				print last, count;
			count = 1;
			last = current;
		}
	}
	if (count > 0)
		print last, count;
	print "Average grace-period duration: " sum / newNR " microseconds";
	print "Minimum grace-period duration: " gptimes[1];
	print "50th percentile grace-period duration: " gptimes[pct50];
	print "90th percentile grace-period duration: " gptimes[pct90];
	print "99th percentile grace-period duration: " gptimes[pct99];
	print "Maximum grace-period duration: " gptimes[newNR];
	print "Grace periods: " ngps + 0 " Batches: " nbatches + 0 " Ratio: " ngps / nbatches;
	print "Computed from rcuscale printk output.";
}'