08-30-2010
Quote:
Originally Posted by
vanguard
So the i7 in my desktop should, in theory, be ok with a load under 8. It has 4 cores with hyper threading.
Hyperthreading isn't multitasking. The effect, in an OS equipped to handle hyperthreading, is about a 30% performance improvement over a non-hyperthreading core. That it appears as two "virtual" cores is a side-effect, you don't really have eight cores.
So, four cores, four simultaneous processes.
Quote:
Are you saying the x3110 only runs 2 processes at a time?
Two cores, two simultaneous processes.
These CPU's could be fine with a great deal more processes than that depending on speed requirements etc. They will just have to start time-sharing in order to run them all.
9 More Discussions You Might Find Interesting
1. AIX
after a long period of running, the network application's CPU load in our syst em increase slowly, the failed at the end. we use "truss" tool to trace the process, found that it processes something like "semop" ,"semctl","thread_waitlock","kread" kernel call . The trace log file looks like the... (0 Replies)
Discussion started by: Frank2004
0 Replies
2. UNIX for Advanced & Expert Users
Hi,
I am seeing very high kernel usage and very high load averages on my system (Although we are not loading much data to our database). Here is the output of top...does anyone know what i should be looking at?
Thanks,
Lorraine
last pid: 13144; load averages: 22.32, 19.81, 16.78 ... (4 Replies)
Discussion started by: lorrainenineill
4 Replies
3. HP-UX
Hi All.
In my production server the load is very high.
normally it used to be less than 1,but now it is more than 5.
I am new to unix all together.
I want to know what is the reason behind high load.
and if it is high what is the impact? (4 Replies)
Discussion started by: jyoti
4 Replies
4. UNIX for Dummies Questions & Answers
How to determine what is causing high load average in a system? (3 Replies)
Discussion started by: proactiveaditya
3 Replies
5. UNIX for Advanced & Expert Users
Hi folks,
(Sorry I don't know what its technology is termed exactly. High Availability OR load balancing)
What I'm going to explore is as follows:-
For example, on Physical Servers;
Server-1 - LAMP, a working server
Server-2 - LAMP, for redundancy
While Server-1 is working all... (3 Replies)
Discussion started by: satimis
3 Replies
6. Red Hat
i have a Intel Quad Core Xeon X3440 (4 x 2.53GHz, 8MB Cache, Hyper Threaded) with 16gig and 1tb harddrive with a 1gb port and my apache is causing my cpu to go up to 100% on all four cores heres my http.config
<IfModule prefork.c>
StartServers 10
MinSpareServers 10
MaxSpareServers 15... (4 Replies)
Discussion started by: awww
4 Replies
7. UNIX for Advanced & Expert Users
Hi all, hope you can help me. I'm getting high load average and can't find a reason for this, please share your inputs.
load average: 7.78, 7.50, 7.31
Tasks: 330 total, 1 running, 329 sleeping, 0 stopped, 0 zombie
Cpu0 : 7.0%us, 1.0%sy, 0.0%ni, 23.9%id, 0.0%wa, 38.9%hi,... (4 Replies)
Discussion started by: erick_tuk
4 Replies
8. Infrastructure Monitoring
Greetings,
I've got a Zenoss v2.5 server monitoring a large video encoding farm. Needless to say, these systems are under high bandwidth and CPU utilization the majority of the time.
What I'm running into is that, occasionally, these systems will fail to respond to a standard SNMP request,... (1 Reply)
Discussion started by: Karunamon
1 Replies
9. UNIX for Dummies Questions & Answers
Hi,
my VPS was overloaded and inaccessible for some time and i want to ask for help in which log files i need to look, or which tools to setup to monitor and find the cause of repeated hig load?
watched:
/var/log/messages
/var/log/secure
/var/log/httpd/access_log
/var/log/httpd/error_log... (1 Reply)
Discussion started by: postcd
1 Replies
STUD(8) BSD System Manager's Manual STUD(8)
NAME
stud -- The Scalable TLS Unwrapping Daemon
SYNOPSIS
stud [--tls] [--ssl] [-c ciphers] [-b host,port] [-f host,port] [-n cores] [-r path] [-u username] [--write-ip] [--write-proxy]
certificate.pem
DESCRIPTION
stud is a network proxy that terminates TLS/SSL connections and forwards the unencrypted traffic to some backend. It's designed to handle
10s of thousands of connections efficiently on multicore machines.
stud has very few features -- it's designed to be paired with an intelligent backend like haproxy or nginx. It maintains a strict 1:1 con-
nection pattern with this backend handler so that the backend can dictate throttling behavior, maxmium connection behavior, availability of
service, etc.
The only required argument is a path to a PEM file that contains the certificate (or a chain of certificates) and private key. It should also
contain DH parameter if you wish to use Diffie-Hellman cipher suites.
The options are as follows:
--tls Use TLSv1 (default).
--ssl Use only SSLv3 and no TLSv1.
-c ciphers
Set allowed ciphers using the same format as openssl ciphers. For example, you can use RSA:!COMPLEMENTOFALL.
-b host,port
Define backend. Default is 127.0.0.1,8000. Incoming connections will be unwrapped and sent to this IP and port.
-f host,port
Define frontend. Default is *,8443. Incoming connections will be accepted to this IP and port and will be sent to the backend
defined above.
-n cores
Use cores worker processes. Default is 1.
-r path
Chroot to the given path. By default, no chroot is done.
-u username
Set GID/UID after binding the socket. By default, no privilege is dropped.
--write-ip
Write 1 octet with the IP family followed by the IP address in 4 (IPv4) or 16 (IPv6) octets little-endian to backend before the
actual data.
--write-proxy
Write HaProxy's PROXY (IPv4 or IPv6) protocol line before actual data.
SEE ALSO
ciphers(1SSL), dhparam(1SSL), haproxy(1)
AUTHORS
stud was originally written by Jamie Turner (@jamwt) and is maintained by the Bump server team. It currently provides server-side TLS termi-
nation for over 40 million Bump users.
BSD
September 23, 2011 BSD