, 6 tweets, 6 min read Read on Twitter
@astropuffin @b0rk @yminsky 9/18 here. Not sure that is poor, as I learned a lot from it.

This is what I learned after being in the industry for 30+ years:

@astropuffin @b0rk @yminsky - Google being a 3 millisecond ping away made me guess google.com query frequency to be ~100 Hz. Here, curl can dot it at ~15 Hz. Seems most are less lucky.
- Knowing Linux fork being fast, I was amazed how many magnitudes it is faster than process start.

@astropuffin @b0rk @yminsky @b0rk's SSD is way faster than mine which made my estimation of 10 million bytes/second write speed too slow.

SSD and interface speeds have improved more than I thought.

@astropuffin @b0rk @yminsky - The grep implementation is way faster than I anticipated.

- Parsing of msgpack is only an order magnitude faster than parsing JSON. My guess was at least two orders of magnitude.

@astropuffin @b0rk @yminsky I assumed SQLite did everything in memory, and kept SQL statements prepared, so I was 2 orders of magnitude too high on both the indexed and non-indexed query.

Boy, md5 is much faster and bcrypt much slower than I thought. Again 2 orders of magnitude wrong. On both sides.

@astropuffin @b0rk @yminsky Definitely stuff to show some development and operations teams.

Including of course the interactive graph people.eecs.berkeley.edu/~rcs/research/… (be amazed at the things that have staid constant speed over time).

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