Working on a simple, half duplex network diagnostic that will run anywhere using nc and dd. Performance is symmetrical with sink and source nc processes open as a server:
With this on the client:
When I try to make the connection bi-directional on the same port, the write performance degrades:
I'd like the diagnostic to use a single port, if possible. Any insights or suggestions would be greatly appreciated.
Thanks,
Tom
Last edited by pludi; 02-25-2011 at 04:16 AM..
Reason: code tags, please...
Hello,
I have a mail server (sendmail) with SUNOS 5.5.1. Just recently it began to respond very slowly.
I used vmstat to check the performance data. Only interupt, system call and CPU context swiching are relatively high. Other statistics are normal, especially CPU utilization are very... (5 Replies)
Hello,
I have a performance problem on an AIX box. I'm not sure what is causing this and hoping someone may have suggestions. Currently I'm noticing that cpu's are waiting while the box is in a idle state. I checked the disks and none of them are at 100%. If they were then I would understand... (3 Replies)
Hi All,
There is a virtual user "ecoouk" which logs on to the server and runs some scripts. I want to know how much server performance can I gain if I put off all the scripts run by this user.
Please tell me how to analyse how much resources a specific user is using.
Regards,
Abhishek (3 Replies)
I have a Teradata Machine, using MP-RAS Unix, with a 1000 Intel Ethernet card and a Cisco switch.
If I configure the ethernet card and the switch to auto, so they negotiate to 1000, or configure the ethernet card and switch manually to 1000Full or 100Full, the velocity is very very low.
Only... (2 Replies)
This is a weird problem I've been butting my head against for days now...
I have two OpenVPN servers set up with identical configurations except for the keys. One of them is hosted in a datacenter with a large backbone, the other is hosted on my home server's limited residential internet. One... (9 Replies)
hello,
i'm having some performance problem on one of my linux machines and i hope someone will be able to help me analyzing the problem.
machine info:
Linux fedora, cpu x 4 cores of 1.6Ghz, 8G memory, 8G swap.
i've enabled sar on my machine and created a graph using ksar utility for... (15 Replies)
Running CentOS 5.5:
I've come across a relatively recent problem, where in the last 2 months or so, the root disk goes to 99% utilization for about 20 seconds when a user logs in. This occurs whether a user logs in locally or via ssh. I have tried using lsof to track down the process that is... (5 Replies)
Hi,
I am Shell script beginner.
I wrote a shell programming that will take each line of a file1 and search for it in another file2 and give me the output of the lines that do not exist in the file2.
I wrote it using do while nested loop but the problem here is its running for ever . Is there... (12 Replies)
Discussion started by: sakthisivi
12 Replies
LEARN ABOUT CENTOS
pmisettimezone
PMISETTIMEZONE(3) Library Functions Manual PMISETTIMEZONE(3)NAME
pmiSetTimezone - set the source timezone for a LOGIMPORT archive
C SYNOPSIS
#include <pcp/pmapi.h>
#include <pcp/impl.h>
#include <pcp/import.h>
int pmiSetTimezone(const char *value);
cc ... -lpcp_import -lpcp
Perl SYNOPSIS
use PCP::LogImport;
pmiSetTimezone($value);
DESCRIPTION
As part of the Performance Co-Pilot Log Import API (see LOGIMPORT(3)), pmiSetTimezone sets the source timezone in the current context to be
value.
In the absence of a call to pmiSetTimezone the source timezone defaults to the timezone of the localhost.
DIAGNOSTICS
pmiSetTimezone returns zero on success else a negative value that can be turned into an error message by calling pmiErrStr(3).
SEE ALSO LOGIMPORT(3), pmiErrStr(3), pmiSetHostname(3) and pmiStart(3).
Performance Co-PilotPMISETTIMEZONE(3)