Sound And Vision Magazine – Spraying for Mosquitos Interesting article about cell phone ring tones that some kids use because adults can’t hear them. It also is interesting that I can still barely hear the 15.7 kHz NTSC horizontal scan noise. That used to bug the crap out of me as a kid. (tags: hearing audio cell phones)
Hah! Today I got to play with a power tool I’d never used before: a Genie GS-2032 scissor lift. It sure beats the snot out of a huge ladder for hanging theater lighting instruments, and it’s pretty darn stable with my 250 pound frame on it. The best thing is that you can move it around yourself while you are in the air. Theater folks move around on ladders and scaffold all the time. The difference with this is its nice, predictable, controllable motion, rather than a person on the ground shoving you around. I want one. One of their Z-135/70 booms could be a lot of fun, too. There’s a lot I could do 141 feet in the air. …
Earth: Mostly Harmless :: How I got mobile phone reception where there was no signal :: July :: 2006 redhat.com | Choosing an I/O Scheduler for Red Hat Enterprise Linux 4 and the 2.6 Kernel (tags: linux performance redhat sysadmin tuning)
Read this, from the netfilter/iptables FAQ: To optimize performance, please also raise the number of hash buckets by using the hashsize module loadtime parameter of the ip_conntrack.o module. Please note that due to the nature of the current hashing algorithm, an even hash bucket count (and esp. values of the power of two) are a bad choice. Now examine the kernel output from my RHEL AS 3 box: ip_tables: (C) 2000-2002 Netfilter core team ip_conntrack version 2.1 (8192 buckets, 65536 max) – 304 bytes per conntrack 8192 is both even and a power of two. Great hash size. I don’t know if I should blame Red Hat or the Linux kernel (leaning towards Red Hat since their quality assurance sucks …
Sorry folks for being out of the game for a bit. Last week got busy with flash floods in our data centers, projects going sideways, and the Wisconsin VMware User’s Group meeting on Friday. Some of you have commented on some of my posts and I want to get back to them with a response. Like a flash flood, though, I find myself being swept away in time by dozens of small fires that need extinguishing. The VMUG was at The American Club in Kohler, WI. It’s the only five-star hotel in the Midwest, and it was really awesome that Fujitsu sponsored it. Even though it was 90° Fahrenheit outside the beer was cold. There was lots of news about …
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“Hey Bob, how do I get PHP to connect to Oracle?” Dude, it’s called Google. I’m a sysadmin, not development support. Oh, wait, yeah, I am development support. But not like that. Geez, get a damn book or something. “I have a chunk of code I can give you as an example if you want.” Trying. hard. to. be. nice. because. you. are. a. knob. and. I. am. busy. “Oh, I have code that has worked in the past. It just doesn’t work now. I think you’re missing the Oracle part on those new virtual machines.” Why didn’t you just say that to begin with, dick? Cut to the chase. “You’re right. Those don’t have the Oracle stuff built in …
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It used to be troublesome when someone needed 200 GB of disk space. It was this big negotiation between a system administrator or storage administrator and the DBA, or the user, or the application admin about why and how and how long and space is expensive and etc. etc. I believe the right term for it is “goat rodeo.” With the advent of 300 GB fibre channel drives and 750 GB SATA drives storage administrators don’t need to worry about any of that crap anymore. They don’t even bat an eye at a 500 GB space request because it isn’t a problem anymore. Some of you will say I am spoiled in the environment I’m in, but it’s a fact …
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