When
· Naughties
· · 2007
· · · December
· · · · 13 (2 entries)

Photoworld · Here’s some re­portage from the pho­toen­thu­si­ast side of the brain, in­clud­ing a shot by an ac­tu­al re­al pro­fes­sion­al (and the dif­fer­ence shows), Ri­coh rum­blings, cal­i­bra­tion, con­ver­sa­tion, pic­tures by four dif­fer­ent cam­eras, and two pic­tures of cam­era gear. I can gang to­geth­er nearly-unrelated top­ics in a great big post like this be­cause photo-hounds will read all of it and no­body else will read any; so ef­fi­cien­cy is max­i­mized ...
[6 comments]  
Slow Bonnie · I’ve been notic­ing that it takes longer and longer to get a mean­ing­ful Bon­nie run. To make sure you’ve bust­ed the filesys­tem caching and are ac­tu­al­ly do­ing I/O, you need to use a test file two or three times the size of sys­tem mem­o­ry. Which can eas­i­ly get in­to a cou­ple of hun­dred gigs on a se­ri­ous serv­er these days. And while I/O has been get­ting faster, it still takes a while to pro­cess that much data; and Bon­nie does it five times. So, the ra­tio that gov­erns Bon­nie test­ing time is some­thing like memory-size over I/O-performance. Thus we ob­serve that, pro­por­tion­ate­ly, mem­o­ry size has grown faster than I/O speed. Thus, mem­cached and friend­s.
[1 comment]  
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