Archivo de la categoría: Linux

fio some benchmarks iops

130 nvmeread: iops=37457write: iops=12491-bash-4.4# fio –randrepeat=1 –gtod_reduce=1 –name=test –filename=test –bs=4k –iodepth=64 –size=4G –readwrite=randrw –rwmixread=75 test: (g=0): rw=randrw, bs=4K-4K/4K-4K/4K-4K, ioengine=sync, iodepth=64 fio-2.0.14 Starting 1 process Jobs: 1 (f=1): [m] [100.0% done] [197.2M/67756K/0K /s] [50.7K/16.1K/0 iops] [eta 00m:00s] test: (groupid=0, jobs=1): err= 0: pid=39865: Tue Oct 30 16:47:38 2018 read : io=3071.7MB, bw=149830KB/s, iops=37457 , runt= 20993msec… Leer más »

Postfix Monitoring With Mailgraph And pflogsumm

https://www.howtoforge.com/postfix-monitoring-with-mailgraph-and-pflogsumm-on-debian-lenny     To install pflogsumm, we run aptitude install pflogsumm We want pflogsumm to be run by a cron job each day and send the report to [email protected]. Therefore we must configure our system that it writes one mail log file for 24 hours, and afterwards starts the next mail log so that we… Leer más »

iozone benchmark 4k and fio

https://www.cyberciti.biz/tips/linux-filesystem-benchmarking-with-iozone.html iozone -r 4k -s 4096m -b test4k.xls https://devopsideas.com/benchmarking-disk-iops-aws-vs-digitalocean/ fio –randrepeat=1 –gtod_reduce=1 –name=test –filename=test –bs=4k –iodepth=64 –size=4G –readwrite=randrw –rwmixread=75 versión windows https://bluestop.org/fio/

postgresql

https://www.if-not-true-then-false.com/2012/install-postgresql-on-fedora-centos-red-hat-rhel/

15 Useful Linux and Unix Tape Managements Commands For Sysadmins

https://www.cyberciti.biz/hardware/unix-linux-basic-tape-management-commands/ Tape devices should be used on a regular basis only for archiving files or for transferring data from one server to another. Usually, tape devices are all hooked up to Unix boxes, and controlled with mt or mtx. You must backup all data to both disks (may be in the cloud) and the tape… Leer más »

Linux Tape Backup With mt And tar Command Howto

source: https://www.cyberciti.biz/faq/linux-tape-backup-with-mt-and-tar-command-howto/   Magnetic tape is a non-volatile storage medium consisting of a magnetic coating on a thin plastic strip. Nearly all recording tape is of this type, whether used for video, audio storage or general purpose digital data storage using a computer. How do I make backup using tapes under Linux operating systems? Linux… Leer más »

screenFetch – The Bash Screenshot Information Tool

https://github.com/KittyKatt/screenFetch   screenFetch is a «Bash Screenshot Information Tool». This handy Bash script can be used to generate one of those nifty terminal theme information + ASCII distribution logos you see in everyone’s screenshots nowadays. It will auto-detect your distribution and display an ASCII version of that distribution’s logo and some valuable information to the… Leer más »

provide a systemd user service unit for vncserver

https://github.com/TigerVNC/tigervnc/blob/master/contrib/systemd/user/vncserver%40.service   Ejemplo: loginctl enable-linger username systemctl –user enable vncserver@:1.service # # /usr/lib/systemd/user/[email protected] # # 1. Switches for vncserver should be entered in ~/.vnc/config rather than # hard-coded into this unit file. See the vncserver(1) manpage. # # 2. Users wishing for the server to continue running after the owner logs # out MUST enable… Leer más »

Realtek rtl8723de Device d723

02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device d723 Subsystem: Hewlett-Packard Company Device 8319 Flags: bus master, fast devsel, latency 0, IRQ 122 I/O ports at 1000 [size=256] Memory at 91000000 (64-bit, non-prefetchable) [size=64K] Capabilities: Kernel driver in use: rtl8723de Kernel modules: rtl8723de https://h30434.www3.hp.com/t5/Notebook-Wireless-and-Networking/Realtek-8723DE-wifi-module-amp-Bluetooth-Linux-driver/td-p/6477307     1. Make sure you have git installed. You can… Leer más »