This is a living document. Everything in this document is made in good faith of being accurate, but like I just said; we don't yet know everything about what's going on.
On March 29th, 2024, a backdoor was discovered in xz-utils, a suite of software that
L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
SSD random read ........................ 150,000 ns = 150 µs
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
| #EXTM3U | |
| #EXTINF:-1,BBC - Radio 1 | |
| http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p | |
| #EXTINF:-1,BBC - Radio 2 | |
| http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio2_mf_p | |
| #EXTINF:-1,BBC - Radio 3 | |
| http://open.live.bbc.co.uk/mediaselector/5/select/version/2.0/mediaset/http-icy-aac-lc-a/format/pls/vpid/bbc_radio_three.pls | |
| #EXTINF:-1,BBC - Radio 4 | |
| http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio4fm_mf_p | |
| #EXTINF:-1,BBC - Radio 5 live |
With autofs you can easily mount network volumes upon first access to the folder where you want to mount the volume. Autofs is available for many OS and is preinstalled on Mac OS X so I show you how I mounted my iTunes library folder using this method.
autofs needs to be configured so that it knows where to gets its configuration. Edit the file /etc/auto_master and add the last line:
#
# Automounter master map
#
+auto_master # Use directory service
Using these URLs, you can listen to CBC radio streams with applications like VLC or Transistor. The files are M3U playlists, so you can use them as-is, edit them to suit your tastes, or use individual URLs.
This playlist contains the .m3u8 URLs from the CBC Listen website, which uses the HLS (HTTP Live Streaming) protocol. The audio stream is broken up into multiple tiny files, which are then fed into the .m3u8 playlist file that delivers them to your computer in the right order. This should work with modern media players.
This legacy playlist uses good old-fashioned MP3 streams found on PublicRadioFan.com. It will work with older programs like Winamp that don't support HLS. I don't know how lo
| // Just before switching jobs: | |
| // Add one of these. | |
| // Preferably into the same commit where you do a large merge. | |
| // | |
| // This started as a tweet with a joke of "C++ pro-tip: #define private public", | |
| // and then it quickly escalated into more and more evil suggestions. | |
| // I've tried to capture interesting suggestions here. | |
| // | |
| // Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_, | |
| // @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant, |
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