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  • 0 posts edited
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  • 240 votes cast
Mar
21
comment Server RAM vs PC RAM
Why would you buy one piece of 8 GB RAM? Most any server has at least 4 RAM slots. If you needed maximum RAM you would buy 4 8GB pieces. If you needed 8GB you would buy 4 2GB pieces. But never 1 8GB piece...
Mar
9
comment Is it normal to get hundreds of break-in attempts per day?
Instead of iptables rules or hosts.deny try using ipsets. You make a iptables rule to block every IP/network in the set, then add IPs to the set. The ipset implementation is very fast: much faster than the iptables rule chains.
Feb
2
comment Is it safe to use consumer MLC SSDs in a server?
One trick to get more reserve space out of a drive is to do the secure erase, then partition it with a large fraction unused. This free space will add to the SSD's performance and lifetime.
Oct
20
comment RAID 5 with big SATA disks. Do or don't?
Seeks are often slower on the big commercial drives because it takes longer to find the right data track.
Sep
16
comment Linux box time dilation, part 2
Good idea. It does sound like Linux is using TSC on a CPU with variable TSC and power saving modes.
Jul
24
comment Advantages and disadvantages of ARM vs x-86 processors in future laptops
Most of GCC's optimizations happen regardless of the instruction set being compiled for. In fact, GCC is one of the more used ARM compilers already.
Jul
18
comment What is ECC ram and why is it better?
I disagree with the article. I think everyone should be using ECC. I wasn't going to give in but I wanted a new Core I7 enough that I finally did. However, I am sure my 6GB of RAM are picking up errors all over the place.
Jul
18
comment What is ECC ram and why is it better?
A bit error in a number anywhere, including someone's small business finance package can be very small or very large. It all depends on what bit.
Jul
15
comment Do you consider Java on your Linux server to be a problem?
I consider any Java software that won't run on the very newest 1.6 JVM in both 32 and 64 bit mode to be horribly broken.
Jul
6
comment Windows 7 RC Optimizations for Netbook
I thought that Shadow Copy existed in all versions of Vista and Win7 (used by the OS for restore points, forex), it just isn't available for use by user except in some versions.
Jul
6
comment TCP Optimization for WinXP
Except that XP is known to have bad defaults for high latency or high bandwidth links.
Jun
26
comment Most popular misconceptions about networking
Oh yeah, always worth checking for. ARPwatch has saved me a couple of times.
Jun
26
comment Most popular misconceptions about networking
+ for the Scotty reference. :)
Jun
26
comment Most popular misconceptions about networking
In all fairness to the customer Kara, they do have a point. The way your software is written no doubt assumed "Latency is zero", which I see in almost all DB access software.
Jun
18
comment Are there any reasons NOT to run an Ubuntu server?
Debian is even barer than Ubuntu for server installs though.
Jun
17
comment Using Linux IPTables, How to block torrents or any P2P protocols?
One other step involved in that is using Group Policy to push a trusted root certificate for the SSL proxy so it can forge trusted certs.
Jun
17
comment Using Linux IPTables, How to block torrents or any P2P protocols?
@packs: More and more BitTorrent clients offer full encryption and even camouflage as other protocols because of ISPs doing packet inspection.
Jun
17
comment Ideal specs for a developer workstations?
Voted this up because it's just too cool, but I'd say that system is more for movie editing than programming.
Jun
16
comment Can I nohup/screen an already-started process?
You actually can change it on most Unixes. It's a disgusting hack. I love it. :) What you do is, connect to the process using debug support like ptrace, then force the process to call dup2() to reconnect 0,1,2 to another filehandle.