All Questions
Tagged with performance central-processing-unit
81
questions
0
votes
0
answers
250
views
Workday integration task failed
I am trying to run a studio integration that was built in the past - so don't have access to the studio files etc. On running the integration - the following error is encountered.
"Integration ...
- 1
1
vote
0
answers
174
views
VPS performance apparently low - how can I verify?
I apologize wholeheartedly but this is probably as unspecified as it can get as for a question.
I run a linux VPS and...I think it has an important performance problem, but I can't pin point what it ...
- 499
4
votes
1
answer
4k
views
What is the relation between IO wait utilisation and load average
Load average uses processes that are running or runnable or in uninterrupted sleep state. So do the processes in uninterrupted sleep state correspond with the %wa as per the top command? Both are ...
- 141
2
votes
0
answers
224
views
Bad performance on better hardware
I have postgresql streaming replication on 2 hosts and I've faced with the problem of different performance compared between two servers. It looks like all sql queries on one host are slower on 70-90% ...
- 243
1
vote
1
answer
2k
views
Can I compare stress-ng bogo ops/s across different CPUs?
I'm testing out a new server with a Xeon 6130 CPU and trying to compare it to an older box with the E5-2660v4. Here's a test I just ran on each box:
On the 6130:
# stress-ng --matrix 40 -t 30s --...
- 487
0
votes
2
answers
157
views
cpufrequency on Debian 8 (Jessie)
I'm running a database benchmark (TPC-H) and because of this, I need my processor not to have variable-speed. I know there are modes:
Powersave
Conservative
Ondemand
Usespace
Performance
On S.O. Red ...
- 101
2
votes
0
answers
96
views
find out NUMA locality of process RAM
I am doing an application benchmark with multiple instances of the same application. I found out that pinning their processes (with sched_setaffinity under Linux, with TaskManager under Windows) to ...
- 387
1
vote
0
answers
183
views
Slow server performance. Is it the hardware's fault?
We recently ordered a new server machine to beef up page load times of the websites we are hosting. The hardware is provided and partially managed by a hosting company. The dedicated machine has two ...
- 141
1
vote
1
answer
101
views
Is there a way to slow down a processor to a specific speed?
We have some Sun Blade T6320s Servers that run on Sparc 64-bit UltraSparc T2 processors. We recently found out that the 2nd generation of these servers have a faster processor speed (1415 MHz) than ...
- 145
1
vote
0
answers
61
views
Enable Resource Governor
I have setup an SQL Server 2008 R2 SP1 in my infrastructure. One of my SQL jobs consumes much CPU usage and when this happens all other queries take too long to respond.
After research I read about ...
- 11
3
votes
1
answer
868
views
For MySQL performance, all things being equal, does single threaded processor performance matter more or overall performance?
Say I have two servers, both with the same RAID 10 SSD HDD, 128GB Ram, etc.. I'm trying to figure out which server to get. There is a significant price difference between these two following setups, ...
- 211
0
votes
0
answers
473
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Comparing 1x Xeon multi core vs 4x UltraSparc IV
I'm in the process of reviewing specs for hardware running an Oracle server.
The new hardware will be running using Xeon processor compared to the old servers (Solaris) running on UltraSparc IV.
So ...
- 151
0
votes
1
answer
6k
views
Will adding CPU cores or RAM to my cloud server improve speed in my situation? [duplicate]
I have a Siteground cloud server, and I know nothing about servers. It hosts 8 websites, although 3 of them have their own dedicated IP addresses and cPanels.
It's on a Linux server, but there's ...
- 163
10
votes
3
answers
8k
views
Linux: Why does the CPU frequency fluctuate when using the performance governor?
I'm using a Debian 8 amd64 machine for benchmarking. During experimentation, I would like the CPU to operate at a fixed frequency (preferably the maximum possible). This will rule out the CPU clock ...
- 973
0
votes
0
answers
233
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Sudden increase in my CPU usage during random moments(Win Server 2012)
At random times, no matter if I am online or not I see that my server having increased Process usage spikes, as you can see in the picture:
So I go inside the Dashboard on the Server Manager, look at ...
3
votes
4
answers
3k
views
What is a core, and will purchasing more cores for my VPS speed up page load times?
I recently purchased a premium WordPres plugin called Hide my WP. I planned on using this plugin for my nonprofit organization's website, which is a multisite WordPress installation with an SSL.
...
- 163
0
votes
1
answer
124
views
Are there benchmarks that measure code execution with various CPUs? Nodejs server building
I have experience building PCs with gaming in mind. But where do I start when it comes to building a server (running specifically NodeJS programs)?
I know the most significant factor would be the ...
F. Rakes
0
votes
0
answers
208
views
Counterintuitive drop in CPU
I am running a memcached service in a linux container pinned to a specific physical core. As expected the CPU increases when the number of requests increase. The requests are sent from a workload ...
- 11
28
votes
2
answers
29k
views
How are CPU time and CPU usage the same?
In the Wikipedia page for CPU time, it says
The CPU time is measured in clock ticks or seconds. Often, it is
useful to measure CPU time as a percentage of the CPU's capacity,
which is called ...
- 2,540
1
vote
1
answer
690
views
Website performance sluggish - High CPU and Disk Usage
Over the past couple of days my website's performance has been very sluggish, with queries taking a lot of time to execute. My CPU usage hit around 100% 4 times this week. Here is the output of top at ...
- 273
0
votes
1
answer
965
views
PostgreSQL queries slower than before?
I am using PostgreSQL 9.3 server on my production server. Everything had been working fine for the past couple of months. But since the past week or so, PostgreSQL seems to have becomes very slow with ...
- 273
-2
votes
1
answer
135
views
Amazon G2 not giving a much better computing performance than my laptop CPU [closed]
I have a Java console application that performs Reed-Solomon error correction on large volumes of data (~700 MB at a time), just to test performance. The application is multithreaded, I can see it ...
- 217
0
votes
1
answer
1k
views
Strange CPU spikes with MySQL
On my server (ubuntu 12.04) mysqld started to show some strange CPU spikes. I've logged some of it as a sample:
http://pastebin.com/4MwKUVwL
The value after the triple dash '---' is the cpu usage (...
- 1
1
vote
4
answers
9k
views
How to explain to users the difference between Xeon and i7/Consumer CPU [closed]
I know that these 2 CPUs, given the same clock speed are still different due to many different factors, but realized I didn't really have enough knowledge to explain it clearly. I assume caching and ...
- 616
3
votes
2
answers
2k
views
Intel Xeon E7-4807 vs Intel Xeon X5690
We replaced our main line of business server with a new one. The old server had dual Xeon X5690s in it (2 generation old chip), the new server has quad Xeon E7-4807s. We expect processor performance ...
- 33
0
votes
1
answer
126
views
Trading Engine running on RHEL 5.x [closed]
Before asking question quick background about myself working at one of trading company this is my 1st job as sysadmin I have finish my RHCE no experience how production server work.
In our company ...
- 206
0
votes
3
answers
7k
views
Linux server became extremely slow
I have a file sharing website, and my files hosted in a server with those system specifications:
32GB RAM
12x3TB
2x Intel Quad Core E5620
I have files in this server up to 4gb for each file. 446gb ...
- 173
2
votes
0
answers
116
views
IBM xSeries 306 CPU Speed
I have an IBM xSeries 306. The system has been flawless until a week ago. It's a Pentium 4 Dual Core CPU. The CPU speed is 3.20 gHz. Now, it shows 4.26 gHz or 2.16 gHz when the POST screen comes ...
- 69
5
votes
2
answers
2k
views
vCenter Cluster CPU utilisation data inaccurate
We have quite a reasonably sized vSphere 'estate', with 80% of our Windows/Linux servers virtualised, running across six Datacentres. One of my challenges is medium to long term capacity planning, ...
- 5,232
1
vote
1
answer
493
views
Why does my program run 2-4 times slower on a VPS?
I have a program (Node.js web application on Ubuntu) that loads in about 7 seconds on my home computer.
Recently I copied it to a VPS, and there, it loads in 15-30 seconds.
I am trying to find out ...
6
votes
2
answers
69k
views
Apache consuming too much CPU and memory
I'm having some troubles with CPU and memory usage with an Apache Web Server.
We're running an Ubuntu Server 12.04 LTS on a Virtual Machine. Our server has following specs:
8GB RAM;
4 vCPUs (12ghz);
...
- 265
-1
votes
1
answer
191
views
Server Hardware/Settings for high traffic [duplicate]
I'm currently using a virtual server.
2 vCores 8GB RAM Bandwith 100MBit/s Ubuntu 10.04
But still this seems to be not enough to handle the traffic on my site. Normally a page needs less than 0....
-1
votes
1
answer
1k
views
Kvm poor cpu performance
I have running some Minecraft Servers in a Qemu VM over Libvirt, and the performance is only half good than on real hardware.
Libvirt started the vm over:
/usr/bin/kvm
-S
-M pc-1.1
-cpu SandyBridge,+...
- 21
-1
votes
1
answer
877
views
Intel Xeon or AMD Opteron is better for MSSQL 2012?
Is there any difference in performance, optimisations in MSSQL 2012 on Opteron and Xeon platform ?
basically we are thinking about 2 x 6 Cores Xeon E5-1660 or 2 x 16 cores Opteron 6380
- 161
0
votes
2
answers
109
views
When upgrading hardware to increase program performance, which should I consider first CPU, RAM or both? [duplicate]
I have a simple script that I wrote in PHP (which, after reading lots of QAs seems to have less than desirable memory management). It's an extremely small script that loops through configuration ...
- 135
10
votes
4
answers
14k
views
How can I troubleshoot high Kernel time?
I have unusually high Kernel time on my CPUs as shown in task manager.
What are some ways I can troubleshoot this?
- 8,921
0
votes
1
answer
2k
views
Core i7 vs Xeon -- Floating point performance
I am building a development server for a calculation-intensive application. We're using CUDA and maxing out our current CPU. Floating-point calculation speed is of most importance.
I have been ...
- 13
0
votes
1
answer
232
views
*tiny* SOHO fileserver upgrade recommendations in 2012? [closed]
I say 2012 as we'll likely be buying last year's hardware. We're non-profit (a two-man operation), and this purchase isn't on project funding, so we're cost-restricted, but I always advocate for long-...
- 3
9
votes
1
answer
3k
views
KVM/Qemu, Ubuntu: Why do more guests CPUs enhance Disk-I/O rapidly?
We have an Heartbeat/DRBD/Pacemaker/KVM/Qemu/libvirt cluster consisting of two nodes.
Each node runs Ubuntu 12.04 64 Bit with the following packages/versions:
Kernel 3.2.0-32-generic #51-Ubuntu SMP
...
- 1,032
2
votes
1
answer
193
views
Can anyone explain these differences between two similar i7 processors? [closed]
I have two systems I've just built. They both have i7 processors and Asus P8Z77 motherboards. When I run a simple processor loop benchmark that I wrote in Delphi some time back I get one machine ...
- 123
-1
votes
1
answer
3k
views
High CPU Usage in windows server 2003
In one of our production servers the CPU usage is 100% and thus some of the backup jobs failed.
In windows server 2003 cms.exe shows : 50%, tomcat_3.exe : 25%, and tomcat_1.exe : 25%.
Please help me ...
- 99
3
votes
1
answer
7k
views
Disabling CPU management
If I add the following processor.max_cstate=0 to the kernel command line for boot up, does that disable all CPU power management and throttling?
I also found:
http://www.experts-exchange.com/OS/Linux/...
- 6,681
-1
votes
1
answer
1k
views
MySQL runs at >=100% CPU, heavy disk I/O?
Recently my Debian Linux server has been experiencing slow web server response times. I've investigated and it seems that MySQL is the culprit, yet there are no slow queries indicated by the slow ...
- 99
9
votes
1
answer
1k
views
AMD 24 core server memory bandwidth
I need some help to determine whether the memory bandwidth I'm seeing under Linux on my server is normal or not. Here's the server spec:
HP ProLiant DL165 G7
2x AMD Opteron 6164 HE 12-Core
40 GB RAM (...
- 265
-1
votes
4
answers
648
views
Does shutdown idle VMs improve the performance?
Often our team members are coming to me with a compliant that their VMs are slow.
Our team members suggested to shutdown some of the VMs temporarily and try to access the VM.
But most cases that ...
- 1,311
3
votes
2
answers
881
views
How does I/O performance on Intel E5 procs change with and without QPI
I am in the process of specifying a low-mid range server (which we will purchase multiples of). The application is essentially a software router, so it is very NIC-based I/O intensive. Processor ...
- 539
8
votes
3
answers
984
views
is it dangerous for the processor core to be *always* loaded at 100%?
In my HFT software I plan to use one core for stock index calculation. That would be simply while(true) loop without any delays which will calculate (sum and multiply) components as often as possible (...
- 549
1
vote
1
answer
79
views
Adding extra processor post-installation versus installing on two - 2008 R2
I have a Windows Server 2003 installation which is getting pretty long in the tooth, so I have decided to install Windows Server 2008 R2 Standard instead. I have verified that the server is capable of ...
- 147
2
votes
3
answers
6k
views
Very high CPU and low RAM usage - is it possible to place some of swap some of the CPU usage to the RAM (with CloudLinux LVE Manager installed)?
I had to install CloudLinux so that I could somewhat controle the CPU ussage and more importantly the Concurrent-Connections the Websites use.
But as you can see the Server load is way to high and ...
- 143
1
vote
1
answer
1k
views
How does Oracle Database Standard Edition (One) benefit from running on a dual CPU server?
I am evaluating the impact of additional CPUs on Oracle database performance.
I am looking to license Oracle Standard Edition One (SEO, being most cost effective) or Oracle Standard Edition (SE). As ...
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