| 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 |
Sourced from https://gist.github.com/toricls/d3dd0bec7d4c6ddbcf2d25f211e8cd7b
Lima (Linux virtual machines, on macOS) installation guide for M1 Mac.
Sep. 27th 2021 UPDATED
Now we can install patched version of QEMU via Homebrew (thank you everyone for the info!). Here is the updated instruction with it:
Used M1 Mac mini 2020 with macOS Big Sur Version 11.6.
| ➜ ~ dig www.hotstar.com +trace | |
| ; <<>> DiG 9.10.6 <<>> www.hotstar.com +trace | |
| ;; global options: +cmd | |
| . 87007 IN NS m.root-servers.net. | |
| . 87007 IN NS b.root-servers.net. | |
| . 87007 IN NS c.root-servers.net. | |
| . 87007 IN NS d.root-servers.net. | |
| . 87007 IN NS e.root-servers.net. | |
| . 87007 IN NS f.root-servers.net. |
I was at Amazon for about six and a half years, and now I've been at Google for that long. One thing that struck me immediately about the two companies -- an impression that has been reinforced almost daily -- is that Amazon does everything wrong, and Google does everything right. Sure, it's a sweeping generalization, but a surprisingly accurate one. It's pretty crazy. There are probably a hundred or even two hundred different ways you can compare the two companies, and Google is superior in all but three of them, if I recall correctly. I actually did a spreadsheet at one point but Legal wouldn't let me show it to anyone, even though recruiting loved it.
I mean, just to give you a very brief taste: Amazon's recruiting process is fundamentally flawed by having teams hire for themselves, so their hiring bar is incredibly inconsistent across teams, despite various efforts they've made to level it out. And their operations are a mess; they don't real
| #!/bin/bash | |
| ps aux|grep chromium-browser|grep -v grep | |
| is_chromium_not_running=$? | |
| if [ ${is_chromium_not_running} -eq 1 ] | |
| then | |
| chromium-browser --start-fullscreen "https://grabpay.atlassian.net/plugins/servlet/Wallboard/?dashboardId=10113" &>/dev/null & | |
| fi |
| With /etc/hosts pointing to 18.205.93.0 , 18.205.93.1 and 18.205.93.2 in that order | |
| mouthwash :~/tmp\>echo | openssl s_client -showcerts -servername gnupg.org -connect bitbucket.org:443 2>/dev/null | openssl x509 -inform pem -noout -text | |
| Certificate: | |
| Data: | |
| Version: 3 (0x2) | |
| Serial Number: | |
| 0a:7e:ec:9b:39:52:f1:7e:2f:67:16:55:7a:6f:52:7d | |
| Signature Algorithm: sha256WithRSAEncryption | |
| Issuer: C=US, O=DigiCert Inc, OU=www.digicert.com, CN=DigiCert SHA2 Extended Validation Server CA |
| git pull -vvv | |
| @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | |
| @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ | |
| @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ | |
| IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! | |
| Someone could be eavesdropping on you right now (man-in-the-middle attack)! | |
| It is also possible that a host key has just been changed. | |
| The fingerprint for the RSA key sent by the remote host is | |
| SHA256:wezjvpBxKKg7bKiQ3YStGkNRWONvYAxPHv5zAvNqnLs. | |
| Please contact your system administrator. |
| mouthwash :~/tmp\>curl -vvv https://1.1.1.1 | |
| * Rebuilt URL to: https://1.1.1.1/ | |
| * Trying 1.1.1.1... | |
| * TCP_NODELAY set | |
| * Connected to 1.1.1.1 (1.1.1.1) port 443 (#0) | |
| * ALPN, offering http/1.1 | |
| * Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH | |
| * successfully set certificate verify locations: | |
| * CAfile: /usr/local/etc/openssl/cert.pem | |
| CApath: /usr/local/etc/openssl/certs |
I hereby claim:
To claim this, I am signing this object:
| \n | |
| time_namelookup: %{time_namelookup}\n | |
| time_connect: %{time_connect}\n | |
| time_appconnect: %{time_appconnect}\n | |
| time_pretransfer: %{time_pretransfer}\n | |
| time_redirect: %{time_redirect}\n | |
| time_starttransfer: %{time_starttransfer}\n | |
| ----------\n | |
| time_total: %{time_total}\n |