Matt Abrahams breaks it down. Keeping a speach doesn’t have to be a “near-death” experience. Listen, learn and enjoy . See below some points that I took out from his talk.
I have managed to create my first server in an openstack enviroment here at university of Bergen.
I can see my instance in the Dashboard:
Next thing was to add a volume:
Project -> Compute -> Volumes: Create Volume
After creating it, I had to go to “Manage Attachments”, and in Manage Volumen Attachments, I selected my “diverse” instance.
I had to use fdisk to format the new volume:
fdisk -l
fdisk /dev/vdb
Hint: m for help, n for new partition, w for write table to disk.
Finally, format and mount:
mkfs.xfs /dev/vdb
mount /dev/vdb /data
[root@diverse lib]# df -kh
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 10G 8.1G 1.9G 81% /
devtmpfs 900M 0 900M 0% /dev
tmpfs 920M 0 920M 0% /dev/shm
tmpfs 920M 17M 904M 2% /run
tmpfs 920M 0 920M 0% /sys/fs/cgroup
tmpfs 184M 0 184M 0% /run/user/1000
/dev/vdb 50G 33M 50G 1% /data
I have two different Linux servers, and wanted to test if one where faster than the other. I used mysqlslap together with the “time” command in a bash shell.
# time mysqlslap --user=root --password=$(cat /root/mysql) --host=localhost concurrency=50 --iterations=100 --number-int-cols=5 --number-char-cols=20 --auto-generate-sql --verbose
In this way I could get out different values from the server which I could compare.
Benchmark
Average number of seconds to run all queries: 0.007 seconds
Minimum number of seconds to run all queries: 0.006 seconds
Maximum number of seconds to run all queries: 0.024 seconds
Number of clients running queries: 1
Average number of queries per client: 0
real 0m9.390s
user 0m0.085s
sys 0m0.165s