mirrors
/
system-design-primer
mirror of https://github.com/donnemartin/system-design-primer.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Latency numbers: remove conversion to throughput 

Remove conversion of latency numbers to throughput.

This is misleading for two reasons:
1. Latency and throughput are not computable from each other. For example: if I know it takes 1 second to turn on the hose, get 1 liter of water, and turn it off, I cannot conclude that the maximum rate I can get water out of the hose is 1 liter per second (though I can conclude it's more than that). 
2. The throughput estimates seem suspect, in and of themselves. These are great numbers to know, of course, but need to be backed by a separate source. (This'll be extra important if and when this guide includes information about, say, GPUs, which are optimized for throughput).
pull/427/head
Patrick Sanan 2020-06-18 08:06:52 +02:00 committed by GitHub
parent b2fffe6fd4
commit 5d2b48146e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 0 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
README.md
View File

@ -1623,10 +1623,6 @@ Notes
Handy metrics based on numbers above: Handy metrics based on numbers above:
* Read sequentially from disk at 30 MB/s
* Read sequentially from 1 Gbps Ethernet at 100 MB/s
* Read sequentially from SSD at 1 GB/s
* Read sequentially from main memory at 4 GB/s
* 6-7 world-wide round trips per second * 6-7 world-wide round trips per second
* 2,000 round trips per second within a data center * 2,000 round trips per second within a data center