Search results
"tag:performance"
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Bandwidth testing of LACP bonding link in Linux with iperf
Over the past two months my company (xtendx AG) moved our servers to a new data center at green.ch. One of the primary motivations for this move was to gain access to a multiple gigabit per second Internet link. Each of our production streaming servers ... |
09-Aug-2010 14:31:00 |
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2
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Simple linux bandwidth monitoring with bwm-ng
These past few days I've been running some load tests on new servers, configurations and our Internet link. While we have a Cacti installation graphing everything via SNMP, the 5 minute polling interval means waiting for what seems like forever. I just ... |
30-Jul-2010 09:51:00 |
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3
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Building up & testing a new 10TB SATA RAID10 NFSv4 NAS, part I
Over the past few weeks I've been building up a new data center for my employer, xtendx AG. One of the core tasks has been to design, assemble and install a new storage system. To that end, I've put together the below NFSv4 Network Attached Storage ... |
13-May-2010 11:09:00 |
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4
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Transcend ExpressCard 32GB SSD Performance in a MacBook Pro
Last December I upgraded my MacBook Pro with an Intel X-25M solid state drive, and posted the impressive performance metrics on this blog. (Intel X25M SSD in a MacBook Pro: Before and After Performance Results.) It was an expensive upgrade, but well ... |
12-Apr-2010 20:17:41 |
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5
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Optimal Buffer and Destination Byte Array Size for java.io.BufferedInputStream Reads (for a slow disk)
Earlier in the week I ran some micro-benchmarks against my new very performant Intel X25M solid state drive. Today, for 'kicks', I ran the same benchmarks with the same data against a 5,400 RPM external USB-attached 3.5" hard disk drive. Wow, what a ... |
31-Dec-2009 17:21:00 |
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6
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Optimal Buffer and Destination Byte Array Size for java.io.BufferedInputStream Reads (for a fast disk)
When implementing file reading Java code with Java IO's BufferedInputStream, what buffer size should one choose? Should we just not specific it and go with the default? And what destination byte array size is best? These questions pop up from time to ... |
29-Dec-2009 23:15:00 |
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7
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Intel X25M SSD in a MacBook Pro: Before and After Performance Results
Early last week I convinced my employer, xtendx AG, that I needed one of those new, fancy Intel X25M G2 Solid State Drives for my 18 month old early-2008 MacBook Pro. The prices had finally come down to a tolerable sweet-spot for us: ~SFr500 for the ... |
20-Dec-2009 19:01:00 |
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8
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Expansion of our 'Network Operations Center' by 50%!
After an application slow down this week due to an aggressive backup, we decided we needed to pay more attention to disk activity on our production servers. To that end, I have added a new monitor to our budget NOC setup that shows graphs on new data ... |
27-Nov-2009 13:18:00 |
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9
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Real world performance metrics: java.io vs. java.nio (The Sequel)
The first set of results (September 2008) measuring the performance improvement gained by the switch to java.nio for FLV indexing were not particularly scientific. Each data point was from a different file, of dramatically different sizes, with ... |
16-Jan-2009 20:34:00 |
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10
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Real world performance metrics: java.io vs. java.nio
In my application at xtendx AG, there is some code that indexes uploaded FLV (Flash video) files to determine the byte mark of each key-frame which are spaced out every second or so by our encoding process. The index allows client players to request an ... |
06-Sep-2008 21:52:20 |