Linux

yum -y install bind-utils Dependencies Resolved ============================================================================================================================================================================================================================================= Package Arch Version Repository Size ============================================================================================================================================================================================================================================= Updating: bind-utils x86_64 32:9.9.4-38.el7_3.2 updates 202 k Updating for dependencies: bind x86_64

Error: Connection reset by peer: mod_fcgid: error reading data from FastCGI server. Premature end of script headers: index.php Fix: Add this to your PHP vhost

date Mon Dec 30 13:13:18 EST 2013 ln -sf /usr/share/zoneinfo/CET /etc/localtime date Mon Dec 30 19:15:49 CET 2013

cd /root && yum -y groupinstall “Development Tools” && wget https://storage.googleapis.com/google-code-archive-downloads/v2/code.google.com/ioping/ioping-0.8.tar.gz && tar zxvf ioping-0.8.tar.gz && cd ioping-0.8 && make && make install Test on

vi /root/.bash_profile Add: alias cp=’cp -i’

dd if=/dev/zero of=./zero bs=1M; sync; rm -f ./zero

dmidecode –type memory # dmidecode 2.11 SMBIOS 2.7 present. Handle 0x1000, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use:

echo deadline > /sys/block/sda/queue/scheduler To activate it after booting: echo “echo deadline > /sys/block/sda/queue/scheduler” >> /etc/rc.local

You should try to change the IO scheduler to deadline or noop, and test for a couple of days. The default CFQ scheduler is performing

time dd if=/dev/zero of=/shopcvs/tmp/test.img bs=1M count=2k conv=fdatasync 2048+0 records in 2048+0 records out 2147483648 bytes (2.1 GB) copied, 2.71921 s, 790 MB/s real 0m2.840s user