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2
votes
1answer
16 views

CIS benchmark differences between 2008R2 to 2012R2

I'm looking at hardening our golden image inline with the CIS benchmarks for Windows Server 2008R2 and 2012R2. But, after looking at the two benchmark documents(registration required - sorry) from ...
1
vote
0answers
6 views

Benchgraph httpref - cannot execute binary file

I am trying to make graph of an httperf file with benchgraph (http://www.uprb.edu/profesor/jsola/benchgraph/) When I run the command: benchgraph --ff txt --fn httperf --exporter httperf I get bash: ...
2
votes
1answer
31 views

Benchmarking load balaners

I am working on to benchmark two different load balancers (pound and haproxy), but are unsure how this can be done. Of couse httperf can be used, but it may be technically difficult to actually make a ...
1
vote
1answer
59 views

Why is Apache 2.4.7 in ab tests just as fast as NginX 1.4.6?

Im very confused right now... I've always used Nginx to serve up static files and pass off php to Apache. I built a new box 4GB Ram, installed Apache 2.4.7 with mpm_prefork module and NginX 1.4.6. ...
0
votes
0answers
33 views

Sysbench MySQL cannot cannoect

I have created a user named sbtest, with no password, with all rights on sbtest, and the following error occurs. What am I doing wrong? $ sysbench --test=oltp run --debug sysbench 0.4.12: ...
0
votes
1answer
25 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 ...
0
votes
0answers
88 views

Windows Server 2012R2 benchmark [duplicate]

i hope you can help me. I have got this task to "characterize" and benchmark performance on our new server setup we have at a hosting center. Basically it is 2 HP ProLiant DL380p Gen8, 3.00 GHz, ...
-1
votes
1answer
69 views

measuring network throughput with netperf

I'm doing benchmark test of Linux server using netperf. According to information at networksecuritytoolkit the theoretical max throughput rate for 1514-bytes packets is 117.35 Mbp/s. However I'm ...
1
vote
1answer
47 views

Influence of kernel code execution to Load average in top?

I'm trying to tests the amount of CPU that iptables use for NAT. Perhaps it will be more accurate to say "the amount of CPU that the netfilter kernel module" uses. The approach i took was to try and ...
1
vote
1answer
53 views

Strange Disk Benchmarking results for our storage, how to explain? [closed]

I recently tested the storage we got from our hosting provider. I don't know what raid config or how many disks the storage contains of. I used Atto Disk Benchmark which sends smaller and bigger ...
-1
votes
1answer
67 views

Swapfile on SSD and Memory Speed Comparison [closed]

I'm running Ubuntu on Digitalocean's instance that using ssd as their disk, and I'm using swapfile to help memory does the job. What I wanna know is, how can we compare speed between ram and the ...
0
votes
1answer
325 views

What is the real-world speed (stream, latency) of USB3 and USB2 over SATA?

What is the real-world speed (stream, latency) of USB3 and USB2 over SATA? It is easy to find streaming speed comparisons, but more difficult to find latency comparisons in the same setup. Answer to ...
0
votes
0answers
39 views

Benchmark network (internet) connection on server

I have a dedicated ubuntu server I rentet. Now I'm running a lot of ruby background processing on that server, that - among other things - does a lot of get requests to very small images (about 10kb) ...
0
votes
3answers
521 views

Desktop CPU VS server CPU performance - is passmark relevant?

I am replacing my SOHO server (desktop-grade components) with a used server. A quad-core i5 is being replaced with dual quad-core Xeons X5355, here are the details: i5-2300, passmark score 5276: ...
2
votes
1answer
70 views

“Hot data” and erasure coding: how to know if it is efficiently handled?

It is well known that erasure coding adds extra complexity because of encoding and decoding operations. Due to this drawback, most of cloud services recommend to use data replication for hot data and ...
0
votes
0answers
116 views

Why is my TPS/TPM value so different between benchmark factory and HammerDB?

I am using both benchmark factory and HammerDB to generate load against an Oracle 12 database. In both cases I use the same DB on the same storage. In both cases I use a warehouse size of 100. When ...
-1
votes
1answer
86 views

AB speed test two different URLS

I have two different servers running locally with different configurations. I'm interested in seeing with is repeatedly better/faster. I'm using siege right now $ siege -r 100 -b ...
0
votes
0answers
427 views

Slow PHP response times from Apache Benchmark

I have a VPS running Apache (prefork mpm) with 1gb RAM and 2 x Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz. I setup 2 test files to run through Apache Benchmark: htmltest.html (basic HTML file which ...
-3
votes
1answer
52 views

Comparing “user time” for same operations on different cpu

In my accounting system i limit using cpu-time by user. But on servers with different cpu's same operation may take different cpu-time. Now i want compare perfomance for my servers to introduce factor ...
0
votes
1answer
115 views

how to benchmark an ubuntu webserver using Jmeter and create a test report.?

I have an ubuntu webserver(LAMP) running a clients website.I have already created a test plan with jmeter, what i would like to know is how would we benchmark the server with Jmter and create a test ...
0
votes
2answers
7k views

What is the performance implication of hardware vs software RAID in 2-disk RAID0/RAID1 setup?

I am choosing between two similar models of servers, one of which has software RAID, while the other hardware one. Servers in question are SYS-E32-1 and SYS-E32-3 from So you Start (an OVH brand) and ...
0
votes
1answer
447 views

What are the performance implications of Hyper-threading for single Nehalem+ CPU? [duplicate]

I am choosing between two models of servers, the major difference between them being the the availability of Hyper-Threading. Servers in question are SYS-E32-1 and SYS-E32-3 from So you Start (an OVH ...
3
votes
1answer
158 views

How can I measure complex I/O activity to develop realistic benchmarking? [closed]

I need to retrieve a few metric from my service server to benchmark another stroage solution. There are various options are provied by benchmark program(I choosed ...
9
votes
2answers
955 views

How much data does Linux read on average boot?

I wonder how much data in total does a freshly installed vanilla Linux system (like 32-bit CentOS 5.10) read in order to get to a virtual console shell prompt? You know, reading all the configuration ...
4
votes
2answers
361 views

Does LXC container performance depends of host load?

I am wondering if LXC could offer a full isolated benchmarking environment. Let's say we have 2 identical machines, with the same fresh Linux and without network connection. First machine has a load ...
8
votes
5answers
4k views

How to duplicate TCP traffic to one or multiple remote servers for benchmarking purposes?

Infrastructure: Servers in Datacenter, OS - Debian Squeeze, Webserver - Apache 2.2.16 Situation: The live server is in use by our cusotmers every day, which makes it impossible to test ...
0
votes
1answer
85 views

How to benchmark a whole storage infrastructure

I'm a 100% sure that I'm not the first one to consider benchmarking a whole infrastructure, but yet I haven't found any relevant information on how to face this challenge. As I guess we all know what ...
0
votes
1answer
165 views

What's the AB Command to Test 1000 Concurrent Visitors

How can I perform an AB test with 1,000 concurrent visitors in just a second? Say in 1 second, there are 1000 visitors on my site. And in another second there are 1800. In Another second again (3 ...
0
votes
3answers
153 views

File system benchmark that generates I/O from distribution of file sizes [closed]

I am looking for a file system benchmarking tool to test CephFS. This benchmarking tool has to: Generate a set of files (call it fileset) following a particular distribution, e.g., gamma, empirical, ...
2
votes
1answer
2k views

Apache Bench: SSL handshake failing directly related to concurrency level

I ran some tests on ab and when I use a concurrency level of over 155 I get the following: SSL handshake failed (5). SSL handshake failed (5). SSL handshake failed (5). SSL handshake failed (5). SSL ...
8
votes
3answers
356 views

Adding CPUs puts MySQL 5.5 (Debian) performance down

I am about to setup a database server (MySQL) in OpenVZ container and I've been wondering how many CPUs I should assign to it. I decided to benchmark it. I compared two OS/MySQL distributions and ...
1
vote
0answers
230 views

Apache AB results: why does adding concurrency not increase requests processed per second?

So I've been trying to use apache ab to benchmark performance, but I'm having trouble understanding why I'm getting these results. FYI, its a PHP app using Zend Framework, mySQL database, and mostly ...
0
votes
3answers
74 views

Is an I/O benchmark made for hardware an accurate assessment of a Windows VM's performance under vSphere 5?

We support an enterprise application running on Windows Server 2008 R2. One of our customers has chosen to install to VMWare, and what I'm finding is that the VM's are relatively slow compared to ...
1
vote
1answer
1k views

Benchmark MySQL Cluster using flexAsynch: No free node id found for mysqld(API)?

I am going to benchmark MySQL Cluster using flexAsynch follow this guide, details as below: mkdir /usr/local/mysqlc732/ cd /usr/local/src/mysql-cluster-gpl-7.3.2 cmake . ...
1
vote
1answer
117 views

A practical way to do healthcheck for a new server?

I am currently trying to do healthcheck for a new server in data center as a first QA before using by any application side. "What is the practical way and tools to check that the server is fine to ...
0
votes
1answer
304 views

Solaris iSCSI read speeds increase when we start writing

Here's one I haven't seen before. We have an IBM Storwize V3700 storage array, 24 TB, RAID 5 connected to a Solaris 10 file server via an iSCSI link over Gigabit Ethernet (no MPIO at present). We ...
3
votes
1answer
90 views

benchmark my own servers

I have a pile of old and assorted servers. I want to benchmark, stress test and collect all hardware info from them before putting them into test lab environment. I would also like to be able to ...
0
votes
1answer
488 views

Issue with Dovecot connection staying alive : memory or configuration issue?

I had a similar question posted a while ago, and I Thought it fixed my issue, but that was unfortunately not the case. I have a benchmark application which connects about 500 users to a Dovecot 2.2.5 ...
0
votes
1answer
148 views

Mysql general query log tool to play back queries in time?

I am trying to reproduce production activity in time for benchmarking purposes from the mysql general query log. I'd like to be able to use the date data from the log to reprduce the time intervals ...
2
votes
2answers
204 views

Are most webserver benchmarks useless? [closed]

There's a plethora of benchmarks out there, comparing Apache, nginx, lighttpd, LiteSpeed/ OpenLiteSpeed, Cherokee etc. Unfortunately, it seems that most of the benchmarks are of the "small static ...
2
votes
1answer
3k views

Apache 2.4: mod_php vs php-fpm performance

There are plenty of old benchmarks on Apache mod_php vs nginx with php-fpm However, with version 2.4, Apache can use php-fpm. Are there any sensible benchmarks comparing mod_php with php-fpm (both ...
0
votes
3answers
282 views

How to protect server from simple DoS attack

Please note I am NOT asking how to protect server from DDoS. What I mean is that if someone runs siege -c 1000 www.example.com on his VPS. That will result in my server serving thousands of requests ...
0
votes
1answer
217 views

How to fill up linux cache?

I am well aware on how to drop (e.g. /sbin/sysctl vm.drop_caches=3 ) caches in Linux, but for benchmarking I'd like to do the reverse, fill up the caches up to 100% RAM if possible. How would I do ...
0
votes
1answer
300 views

I/O wait values on SSD vs. SATA disks

I have a task where I should benchmark two servers, one that has a RAID10 SATA configuration and second server has RAID10 SSD configuration. Both servers would be placed as gateway mail server and ...
-3
votes
1answer
166 views

Can postgres go faster? [closed]

My question is simply: have i missed any configuration settings that might make postgres achieve better read throughput? Background I'm modeling a very simple twitter program. My schema has only 3 ...
0
votes
0answers
92 views

2 identical systems but different harddisk benchmarks results

I have 2 Dell pe2950 with a raid5 configuration. They are identical inconfiguration, however if I do a harddisk benchmark with ATTO Disk Benchmark I get very strange results. Both machines are of ...
2
votes
1answer
62 views

Benchmark individual drives in RAID5

I'm running a server with 3 RAID5 arrays through an ARECA 1880i coupled with a HP-SAS Expander. After experiencing a massive degradation in performance lately, I want to benchmark the drives ...
3
votes
1answer
402 views

How to have proper expectations about AWS performance?

I'm in the process of moving a webapp from the local server that's been its development home to somewhere else for eventual deployment. I'm currently evaluating AWS and Rackspace, and am in the ...
0
votes
1answer
73 views

lighttpd: SMP workers causing performance degrade

I am trying to increase the performance of my lighttpd system by using SMP workers for multiple cores.It turns out that instead of improving the performance it is degrading it. I dont seem to ...
3
votes
1answer
1k views

Apache AB (ApacheBench) : -no-check-certificate option available?

It seems there is no option to avoid this error : "Verify return code: 20 (unable to get local issuer certificate)". Is there a way to avoid issuer ssl check with AB (like wget's -no-check-certificate ...