sombrafam

# Total metric count
select count(id) from gnocchi.metric;

# Total resource count
select count(id) from gnocchi.resource;

################################################################################
# Instance related cleanups
################################################################################
update gnocchi.metric as upm

dosaboy

#!/bin/bash -eu
#
# Origin: https://gist.github.com/dosaboy/e7b5d142fd56540b6600dc428edf5656
#
# Authors:
#  - edward.hope-morley@canonical.com
#  - opentastic@gmail.com
#
# Query Nova Placement API

dosaboy

#!/bin/bash -eux
#
# Test for SRU of https://bugs.launchpad.net/os-brick/+bug/1524989
#
#!/bin/bash -eux
read -aVMS<<<`nova list| awk '$6=="ACTIVE" {print $2}'`
NUM=${#VMS[@]}
for ((i=0;i<$NUM;i++)); do
    for ((j=0;j<5;j++)); do
        ((`cinder list| grep vm${i}-vol| wc -l` < 5)) || break

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs