Questions about server hardware and software performance, or network performance.

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2
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2answers
243 views

Performance difference between E5405 and X3460

I'm looking at purchasing one of two servers. They're of similar specs except the CPUs. Server 1 comes equipped with 2 x E5405 and server 2 only has one X3460. I've got a few servers that are ...
1
vote
2answers
2k views

Computer specs for a large database

What sort of computer specs (CPU, RAM, disk speed) should I use for running queries on a database of 200+ million records? The queries are for a research project, so there is only one "user" and only ...
-5
votes
3answers
707 views

Looking for the fastest web server [closed]

I've heard the G-WAN beats all others hands down. Has anyone had any experience with this server? I am worried about buffer overruns, since scripting seems to be in C. Thanks!
0
votes
1answer
127 views

Which is faster, key_cache or OS cache?

In a tb with 1 mil. rows if I do (after I restart the computer - so nothing it's cached): 1. SELECT price,city,state FROM tb1 WHERE zipId=13458; the result is 23rows in 0.270s after I run 'LOAD ...
1
vote
1answer
1k views

How to use most of memory available on MySQL

I've got a MySQL server which has both InnoDB and MyISAM tables. InnoDB tablespace is quite small under 4 GB. MyISAM is big ~250 GB in total of which 50 GB is for indexes. Our server has 32 GB of RAM ...
5
votes
3answers
200 views

How to compare CPUs?

What are the metrics and their priorities to compare task specific performance of various CPUs?
0
votes
1answer
332 views

Weblogic Threads Usage

I have an application deployed on WebLogic 10.3, which exhibits a strange behavior. I am running a constant (not too high) load on my application (20 concurrent users, running a light activity). ...
0
votes
2answers
201 views

San Performance - Number of servers connected

Does anyone have any experience of the Ibm DS3400 san. Have found a system with about 30 servers connected to it (mostly virtual machines including all the operating system drives) including 2 sql ...
0
votes
1answer
231 views

Errorlog, accesslog, slow query log, execution time log, traffic and req per sec into one tool?

I'm searching for a tool designed for LAMP server that combines server Error log, Access log, slow query log, takes time of execution of PHP scripts,traffic and req per sec statistics (for example ...
3
votes
2answers
2k views

cp and cat on Centos 5.5/ext3 is 10x slower for files in certain directories

I was sorting some large files (91GB across 27 files) with GNU sort when I noticed that iostat -dxk 3 showed very slow read speeds, between 5 MB/s and 10 MB/s, with 100% disk utilization. I tried cat ...
1
vote
3answers
285 views

Why RAM usage is much bigger than Virtual Memory usage

I am running some tests on a very powerful machine ( 24GB RAM, Window 2008 64bit ) I checked my task manager: Physical memory: 98% ( RAM is 24GB ) But the totally "Memory(Private working set)" usage ...
1
vote
3answers
1k views

Linux 2.6 32-bit + BIGMEM versus Linux 2.6 64-bit?

I've been told that 32-bit Linux with a bigmem kernel (when the system has >=4GB RAM) will perform better than 64-bit Linux. I'd love to define "perform better than" for you, but unfortunately the ...
1
vote
1answer
768 views

The best “performance per watt” (MFLOPS/W) for CPU and GPU for the moment

What are the best "performance per watt" (measured in MFLOPS/W) for current CPUs and GPU's? I hear it is near 500 MFLOPS/W for entire computer ( www.green500.org ), but What is the current record for ...
4
votes
2answers
2k views

Steps to diagnose performance bottlenecks on Mac OS X

If you wanted to track down performance issues on a machine running Mac OS X and find out what was causing slowdowns, which command-line or graphical tools would you use, and how would you use them? ...
1
vote
1answer
953 views

HP SA performance - please estimate

We have HP ProLiant DL370 G6 server with HP SA P410i raid controller, running under CentOS 5.5 x86_64. Some configuration details: 24Gb RAM, 10xHDD SAS 3,5'' 15krpm in RAID1+0, 50/50 read/write in ...
1
vote
1answer
249 views

What may the reason of slowness be (see details in message body)?

I've got a really weird situation I'm beating to solve. A performance problem which looks really like an empty waiting sequence set in code (while it probably isn't so). I've got a pretty powerful ...
7
votes
6answers
4k views

SMB claimed to be “slow”

Our company network (which I believe is a windows domain run on server 2008) is painfully slow. A prime example of this is copying files over SMB - listings take minutes, and copying even modestly ...
1
vote
1answer
104 views

Verify server performance

I'm looking for a quick and SIMPLE way to verify that new servers are performing as expected. The most important metric is disk performance, second is network performance. I’m trying to prevent ...
9
votes
3answers
2k views

Configuring a router to drop packets, introduce latency, corrupt data

I was wondering if anyone had any experience setting up an environment designed purposefully for poor performance when sending/receiving requests over a network. I'm developing an application and ...
0
votes
2answers
676 views

How much memory should I have to run Windows 2008 Server and SQL Server 2008 Web?

I need to improve performance because currently my website is too slow. I'm currently running SQL Server 2008 Express on a dual-core server with 2 GB of memory. My app seems to be CPU-bound ...
8
votes
7answers
3k views

What tips do you have for speeding up (performance of) a MediaWiki installation?

We have a MediaWiki installation and are getting complaints that it is becoming slower. How can we increase the speed / performance? I have one tip (which I'll add below) but I'm really interested in ...
1
vote
2answers
4k views

Windows Server 2008 expanding folders is Slow

On several Windows 2008 Server machines I'll log onto, when expanding folders in Windows Explorer with the treeview on the left, at times, it can take forever for the nodes to expand. Oftentimes ...
5
votes
3answers
488 views

Should I host my entire web application using https?

Actually my only requirement for using SSL encryption is that when a user logs in, the password is transferred encrypted. However after reading a bit about protocol switching, that an HTTPS session ...
0
votes
1answer
905 views

MySQL innodb has lots of processes hanging in “update” state once every minute

Description of problem I have a fairly large MySQL installation. There are at least 3 separate servers which run the innoDB storage engine. Once every minute, at the same time each minute, for about ...
0
votes
2answers
147 views

Router requests capacity

Does anybody have any idea how many requests per second a regular home router can handle? Let's say we are talking about TCP HTTP requests. How many requests can it handle before significant delays ...
2
votes
2answers
891 views

Raid rebuild performance impact

I am wondering whether the raid rebuild process will impact the system performance significantly or not. Will the server be able to respond with a reasonable delay during the rebuild process? Another ...
1
vote
2answers
3k views

Lighttpd: PHP_FCGI_CHILDREN correct value

I'm running Lighttpd on 256MB RAM VPS (with low estimated traffic). In order to optimize my server performances I decided to change these settings: "PHP_FCGI_CHILDREN" => "1", ...
0
votes
3answers
253 views

real-time server connections monitor

Is there any way to see in real-time the connections to my server and through which domains ? Without having to inspect the access.log file, I would like to run a monitor in the shell instead. ...
0
votes
1answer
41 views

US server for PHP & static file, UK server for MySQL (need suggestion)

I have 2 servers: one in US, one in UK both servers are good hardware and connected with unmetered 100Mbps tier-1 but because US server is always give better search engine positioning, I'm going to ...
0
votes
2answers
152 views

Needed requirements for an estimated traffic of 3000 clicks per week

I've an estimated traffic of 3000 clicks per week. So about 12000 per month.  Is a VPS with 256MB RAM and 150GB bandwidth enough for such website ? If no, how do you suggest to upgrade ? thanks ...
1
vote
2answers
587 views

Running multiple Oracle Databases on the same machine

we have hr system for government that serves about 50 governmental organizations the company who created the system want to change the structure of the current system which is one database serving all ...
1
vote
5answers
5k views

VPS hosting is very slow. What's the bottleneck?

I've setup a new VPS hosting, to run a Drupal website but it is extremely slow. It is Ubuntu 10, Apache, php5.2 I've enabled Multi-Processing Module (MPM) module and configured it as follows: ...
0
votes
2answers
220 views

VMWare, Virtualization, Windows 2008 and Performance

When you are looking at the performance monitoring tools in Windows 2008 server is the CPU stats that you see based on the real CPU or the fake CPU (your share of the CPU)? CPU reports to be a Xeon ...
0
votes
4answers
159 views

SQL Server: Shared disk cabinet performance

Our server admin has hatched a plan to move all storage to a central disk cabinet, and have every server use that. We have a central SQL Server that is heavily use (200+ concurrent users) and I am ...
0
votes
1answer
153 views

Counting And Summing Disk IOs in Windows

Among other (see a post of mine) I am trying to count and add the number of bytes read/written to a disk during a minute/hour/day/... on windows. According to the Physical Disk Object documentation ...
5
votes
3answers
964 views

EC2: Regular performance issues without obvious resource contention

We are running LAMP+memcached on an Ubuntu 9.10 x64 xlarge Amazon EC2 instance. This server handles a few hundred requests per second, of which about 60% are static and the remainder all interact with ...
1
vote
1answer
47 views

Compile primary services for performance gain

Greetings, Is it worth it to compile primary services like Apache, MySql and on another note, the kernel to squeeze out more performance? Ubuntu 10.04 64bit // EDIT I mean compile from source with ...
3
votes
2answers
2k views

Does hard drive space affect performance?

I saw a presentation years ago that said hard drives had the best performance when they were < 50% full and that for busy servers, you want to keep your drives < 80% used. The reasoning was that ...
1
vote
1answer
346 views

SQL Server EXPRESS 2008 R2 crippling performance issues

My company has recently requested that all our developers gain knowledge and experience using SQL server database’s (as opposed to sitting in VS all day long). We are all using SQL Server EXPRESS 2008 ...
0
votes
3answers
695 views

Guest ESXi 4 Memory Usage in vSphere Client

one of our VM's is running relatively slowly. it is the only VM running on the ESXi server. In the performance tab the active memory is very low (<1gb), however what is strange is the 'consumed' ...
0
votes
1answer
693 views

Hard-Disk Performance: Two Partitions (Raid) vs One Large Partition (Raid) for VMs?

I have a dedicated machine (host) that will host two guests (Virtual Machines via KVM). What is better in regard to IO Performance: Sorry, important update, by RAID I mean RAID-1 (and I will not ...
31
votes
7answers
43k views

How can you know what is w3wp.exe doing? (or how to diagnose a performance problem)

I'm having a performance problem in a site we've made, and I'm not exactly sure how to start diagnosing it. The short description is: We have a very small site (http://hearablog.com) with very little ...
0
votes
3answers
3k views

Zabbix not collecting data

It's the first time that i install a Zabbix server on my dedicated server (debian 5). But zabbix cannot collect data from the server itself (no remote server, it's installed on the server i have to ...
1
vote
3answers
626 views

What is the maximum speed of ADSL?

As wikipedia says the max speed of ADSL is 24.0 Mbit/s. However here it writes that Japan provides ADSL service with speed 50 Mbit/s.
1
vote
2answers
624 views

Linux NFS performance vs other FSs

It is expected that NFS will be slower than any "normal" file system such as EXT3. Transferring files over the network is the main reason for the additional delay. I am wondering how NFS can be ...
6
votes
4answers
585 views

Suggestions for recommended file system for Linux server

There are many file systems for a Linux server administrator to choose from. Also, it is not always an easy task to figure out the appropriate layout and optimal file system for your needs. Can you ...
-2
votes
3answers
142 views

who is responsible for server monitoring? [closed]

who is responsible for server monitoring ? development team ? development team leader ? Project manager ? dba ? infrastructure team ? who is responsible when application server is running slow or ...
0
votes
1answer
69 views

bench marking windows machine - [closed]

We have a Java based product that is mainly used on windows. Some customers complain that application is slow. We have analysed product using JProfiler and improved various bits. As a next step, it ...
0
votes
1answer
2k views

Identifying what is causing High IO (Linux, Ubuntu)

Your Linode, linodeXXXXX, has exceeded the notification threshold (1000) for disk io rate by averaging 1079.99 for the last 2 hours. That's what I've been getting in my email for the past week, ...
0
votes
5answers
924 views

Poor performance on Windows Server 2003 R2 x64

My current setup is the following: Intel Xeon 5620 2.40Ghz 16GB RAM 1000GB disk Windows Server 2003 R2 x64 I'm having a really poor performance with this setup. I have some previous experiences ...