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Manage status messages in CouchDB with MapReduce
27.09.2024
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Photo by Austin Distel on Unsplash
query large amounts of data on distributed systems. CouchDB has been an Apache project since 2008. Version 1.0 in 2010 has evolved into version 3.3 today. "Couch" was originally an acronym for "cluster
24%
Linux Writecache
19.11.2019
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, ioengine=libaio, iodepth=32 fio-3.1 Starting 1 process Jobs: 1 (f=1): [w(1)][100.0%][r=0KiB/s,w=1401KiB/s][r=0,w=350 IOPS][eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=3104: Sat Oct 12 14:39:08 2019   write: IOPS=352
24%
Matlab-like tools for high-performance computing
16.05.2013
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,1000); 06 07 // Set host data on the Device (GPU) 08 dA = gpuSetData(A); 09 dC = gpuSetData(C); 10 11 d1 = gpuMult(A,B); 12 d2 = gpuMult(dA,dC); 13 d3 = gpuMult(d1,d2); 14 result = gpuGetData(d3); // Get
24%
OrientDB document and graph database
09.08.2015
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Lead Image © Victoria, Fotolia.com
database remote:localhost/discworld root plocal 03 04 create class Person extends V; 05 create property Person.birthday date; 06 07 create class Book extends V; 08 create property Book
24%
GNU Parallel: Multicore at the Command Line with GNU Parallel
04.11.2011
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. Listing 1: Running Many Commands at Once 01 $ cat commands 02 date 03 hostname 04 echo foo | md5sum 05  06 $ cat commands | parallel 07 Thu Jul  8 10:37:20 EST 2010 08 desktop‑machine 09 d3b07384d113edec49
24%
Getting started with Prometheus
28.11.2021
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Photo by Clay LeConey on Unsplash
_filesystem_avail_bytes{device="/dev/nvme0n1p1",fstype="vfat",mountpoint="/"} 7.7317074944e+11 node_filesystem_avail_bytes{device="tmpfs",fstype="tmpfs",mountpoint="/tmp"} 1.6456810496e+10 # HELP node_cpu_seconds_total Seconds the CPUs spent
24%
Failure to Scale
03.07.2013
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of Amdahl’s Law. For my theoretical application with p = 0.8, this works out to 5, just as the computations indicated. For p = 1, or perfectly scalable, a goes to infinity as n goes to infinity
24%
OpenLDAP Workshop
11.06.2014
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Lead Image © tiero, 123RF.com
of output provide information about the search and the type of output: # extended LDIF # LDAPv3 # base with scope subtree # filter: (objectClass=olcDatabaseConfig) # requesting: olc
24%
Serverless run times with custom Bash AWS Lambda layers
25.03.2020
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Lead Image © Eric Gevaert, 123RF.com
. In this article, I explore a relatively new addition to Lambda functions in AWS called "layers" and, with the use of a Bash layer provided on the GitHub page by author Graham Krizek [3], I run a Bash script
24%
Best practices for KVM on NUMA servers
20.05.2014
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Lead Image © Joe Belanger, 123RF.com
echo "${DOMAIN}: $DOM_STATE" 07 virsh numatune $DOMAIN 08 virsh vcpuinfo $DOMAIN | awk '/VCPU:/ {printf "VCPU" $NF } 09 /^CPU:/ {printf "%s %d %s %d %s\n", " on pCPU:", $NF, " ( part

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