Elliott C. Back: Internet & Technology

Gizmodo has a new review of the Western Digital Sharespace 4TB personal NAS product that just came out, and it’s absolutely glowing:

Western Digital’s ShareSpace Storage is a steely, cubular vault of NAS with fast Gigabit ethernet that brings enterprise-level centralized storage down to the small business and deathcore nerd space.

For $999 you get 4TB of storage (2.66TB actually free w/ RAID5), sluggish transfer speeds (10.5MB/s writing and 12MB/s pulling data), three USB ports, and Gigabit ethernet. You could get a faster Drobo for $100 more. And, in my tests, the better looking Drobo gets 16MB/s, and is also hot-swappable. You can buy the enclosure and put in 1.5TB drives to get a 6TB rig if you are so inclined, something that’s less possible with the prepackaged WD NAS solution.

I’ve had bad experience with Western Digital internal/external hard drives; they just die on me (and all the friends I know) a lot. But, I don’t own a WD NAS, so if you have one, let me know your thoughts!

If you’ve thought about whether upgrading from WP Cache 2.0 to WP Super Cache is a good idea, hopefully this benchmark will convince you. I followed my instructions on benchmarking Wordpress with Apache Bench on four configurations of this blog’s main page to measure performance:

1. Without any caching plugins
2. With WP Cache 2.0
3. With WP Super Cache (no compression)
4. With WP Super Cache (compression enabled)

The results show that WP Super Cache is a clear winner, performing 225% better than the older WP Cache. Here is the raw data I gathered during the test:

No caching:
Requests per second: 22.81 [#/sec] (mean)
Time per request: 4383.559 [ms] (mean)
Time per request: 43.836 [ms] (mean, across all concurrent requests)
Transfer rate: 613.75 [Kbytes/sec] received

WP cache:
Requests per second: 872.30 [#/sec] (mean)
Time per request: 114.640 [ms] (mean)
Time per request: 1.146 [ms] (mean, across all concurrent requests)
Transfer rate: 23549.46 [Kbytes/sec] received

Super cache (no compression):
Requests per second: 1518.90 [#/sec] (mean)
Time per request: 65.837 [ms] (mean)
Time per request: 0.658 [ms] (mean, across all concurrent requests)
Transfer rate: 41150.81 [Kbytes/sec] received

Super cache (compression):
Requests per second: 1960.39 [#/sec] (mean)
Time per request: 51.010 [ms] (mean)
Time per request: 0.510 [ms] (mean, across all concurrent requests)
Transfer rate: 53108.70 [Kbytes/sec] received

For more tips on how to improve your Wordpress performance, check out Wordpress Performance: Why My Site Is So Much Faster Than Yours. Another interesting WP caching plugin is Batcache, which uses the memcached backend to serve requests out of a cluster of machines’ RAM memory.

According to the FCC, the term “broadband” now means 768Kbps, up from the previous definition of 200Kbps. Under the new definition, “basic broadband” defines download speeds between 768Kbps and 1.5Mbps. Other changes in how subscribers are reported includes a breakdown of upload and download speed and additional gradations of speed. News dot COM notes that “ISPs will not have to report the prices they charge, yet.”

For comparison’s sake, an average movie download is 700 MB (5872025600 bits), and would take 8.16 hours to download under the old broadband definition at 200Kbps. However, at the new faster rate of 768Kbps, an American with basic broadband will be able to download a movie in just 2.12 hours.

Broadband reporting is a problem for America, because up till now we could only point to useless studies indicating that 12.5% of internet users are still on 56.6k or worse speeds. Once politicians and the industry realizes how bad broadband penetration in the US really is, we’ll see better internet service and connectivity.