Posts Tagged cpu

Linux CPU benchmark for the Console

Posted by on Thursday, 12 December, 2013
A simple way to compare the CPU speed between two servers: time echo "scale = 5000; a (1) * 4" | bc -l This commands calculates Pi to the 5000th decimal place, and returns the time needed to do it. Sample result: real 0m16.809s user 0m15.529s sys 0m0.024s
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How to get CPU information under Linux

Posted by on Tuesday, 7 February, 2012
From time to time I have the need to get basic CPU information out of a server. There are several tricks available online (like this one and this other one) but I decided to write a small bash script that would spit all this information on a easy to read format. A friend of mine mentioned that he saw this before somewhere but the writing of the script was a nice exercise. #!/bin/bash PHYSICAL=`grep -i "physical id" /proc/cpuinfo | sort -u | wc -l` LOGICAL=`grep -i "processor" /proc/cpuinfo | sort -u | wc -l` CORES=`grep -i "cpu cores" /proc/cpuinfo|head -1|awk '{print $4}'` grep -i "^flags" /proc/cpuinfo|head -1|grep " ht ">/dev/null if [ $? -eq 0 ] ; then HT="YES" ; else HT="NO"; fi SIBLINGS=`grep siblings /proc/cpuinfo |head -1 |awk '{print $3}'` if [ $SIBLINGS -gt $CORES ] ; then HTACTIVE="YES" ; else HTACTIVE="NO" ; fi echo "Physical CPUs : $PHYSICAL" echo "Logical CPUs : $LOGICAL" echo "Cores per CPU : $CORES" echo "Spport for HT : $HT" echo "Siblings : $SIBLINGS" echo "Is HT active : $HTACTIVE"
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