01-23-2020
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi you all, I have a BIG performance problem on an Sun E3500, the scenario is described below:
I have several users (30) accessing via samba to the E3500 using an application built on Visual Foxpro from their Windows PC , the problem is that the first guy that logs in demands 30% of the E3500... (2 Replies)
Discussion started by: alex blanco
2 Replies
2. UNIX for Advanced & Expert Users
Hello all
We just built a storage cluster for our new xenserver farm. Using 3ware 9650SE raid controllers with 8 x 1TB WD sata disks in a raid 5, 256KB stripe size.
While making first performance test on the local storage server using dd (which simulates the read/write access to the disk... (1 Reply)
Discussion started by: roli8200
1 Replies
3. AIX
Hi,
I am new registered user here in this UNIX forums.
I am a new system administrator for AIX 6.1. One of our servers performs poorly every time our application (FINACLE) runs many processes/instances. (see below for topas snapshot)
I use NMON or Topas to monitor the server utilization. I... (9 Replies)
Discussion started by: guzzelle
9 Replies
4. Solaris
Hi
We have an M3000 single physical processor and 8gb of memory running Solaris 10. This system runs two Oracle Databases one on Oracle 9i and One on Oracle 10g.
As soon as the Oracle 10g database starts we see an immediate drop in system performance, for example opening an ssh session can... (6 Replies)
Discussion started by: gregsih
6 Replies
5. OS X (Apple)
Interestingly Apple has decided to switch the default shell for new users from bash to zsh in MacOS Catalina (10.15)
Use zsh as the default shell on your Mac - Apple Support
Another interesting fact is that Catalina also comes with /bin/dash (5 Replies)
Discussion started by: Scrutinizer
5 Replies
6. OS X (Apple)
Sadly, I have turned off my access to the Apple Developers Beta program after installing macOS 10.15 Catalina a few days ago.
After the install, I rebooted by MacBook Air and it "hard froze" and we were heading out of town so I grabbed a backup MBA running Mojave.
Then, after getting back at... (10 Replies)
Discussion started by: Neo
10 Replies
7. Programming
On the NI-VISA boards there has been some frustration where folks cannot get NI-VISA to work on macOS Catalina because Catalina (macOS 10.15.x) is "not supported" by NI-VISA (for many months, it seems). Currently, the README shows:
NI-VISA 19.0 for macOS supports the following platforms:
... (10 Replies)
Discussion started by: Neo
10 Replies
8. Programming
Currently have two ESP8266 modules testing some Blynk apps, whereI'm not so happy with the Blynk business model for developers, but that's another story.
So, with two of my ESP8266s currently "busy", I decided to work on the ESP32, and in particular the ESPWROOM32.
I installed the... (0 Replies)
Discussion started by: Neo
0 Replies
9. OS X (Apple)
MacPro (2013) 12-Core, 64GB RAM (today's crash):
panic(cpu 2 caller 0xffffff7f8b333ad5): userspace watchdog timeout: no successful checkins from com.apple.WindowServer in 120 seconds
service: com.apple.logd, total successful checkins since load (318824 seconds ago): 31883, last successful... (3 Replies)
Discussion started by: Neo
3 Replies
LEARN ABOUT CENTOS
powertop
POWERTOP(8) powertop manual POWERTOP(8)
NAME
powertop - a power consumption and power management diagnosis tool.
SYNOPSIS
powertop [ options ]
DESCRIPTION
powertop is a program that helps to diagnose various issues with power consumption and power management. It also has an interactive mode
allowing one to experiment with various power management settings. When invoking powertop without arguments powertop starts in interactive
mode.
OPTIONS
--calibrate
runs powertop in calibration mode. When running on battery, powertop can track power consumption as well as system activity. When
there are enough measurements, powertop can start to report power estimates. One can get more accurate estimates by using this
option to enable a calibration cycle. This will cycle through various display levels and USB device activities and workloads.
--csv[=FILENAME]
generate a CSV report. If a filename is not specified then the default name "powertop.csv" is used. The CSV report can be used for
reporting and data analysis.
--debug
run in "debug" mode.
--extech=devnode
use the Extech Power Analyzer for measurements. This allows one to specify the serial device node of the serial to USB adaptor con-
necting to the Extech Power Analyzer, for example /dev/ttyUSB0.
--help
show the help message.
--html[=FILENAME]
generate an HTML report. If a filename is not specified then the default name "powertop.html" is used. The HTML report can be sent
to others to help diagnose power issues.
--iteration[=iterations]
number of times to run each test.
--workload[=workload]
file to execute for workload.
--quiet
supress stderr output.
--time[=seconds]
generate a report for a specified number of seconds.
--version
print version information and exit.
BUGS
Send bug reports to <powertop@lists.01.org>
SEE ALSO
The program is more fully described at https://01.org/powertop
AUTHOR
powertop was written by Arjan van de Ven <arjan@linux.intel.com>, and is currently maintained by Chris E Ferron <chris.e.fer-
ron@linux.intel.com>.
Linux June 1, 2012 POWERTOP(8)