Linux Performance Tools, Brendan Gregg, part 1 of 2 

07:08 system is running slow, commands 07:11 top (10) 07:31 iotop 07:45 iostat -xz 1 (6) 07:57 netstat 08:14 ss 08:34 dstat 08:43 sar -n DEV 1 (8) 08:59 vmstat (3) 09:10 | 09:49 strace 10:17 what do they mean by the system is slow, latency 11:51 packages, sysstat, procps, coreutils ============================================ 12:07 Anti-methodologies ============================================ 12:13 street light anti-method 13:25 drunk man anti-method 13:59 blame someone else anti-method 14:43 | 16:02 problem statement method ============================================ 16:30 workload characterization method 17:48 USE method, utilization, saturation, errors 18:58 USE method for hardware systems 21:20 off-CPU Analysis 22:36 CPU profile method 24:26 RTFM Method 24:54 reading linux source code, jvm 26:50 How do you measure them ###################### 27:07 observability tools ###################### 27:18 uptime (1) 30:02 top (or htop) 31:57 ps -ef 32:28 vmstat 1 (3) 33:28 instant-xmdz 36:02 mpstat -P ALL 1 (4) 36:14 free -m (7) 36:46 latency is much higher, can you debug it 42:32 observability tools: basic *********************** intermediate *********************** 42:48 strace 44:21 tcpdump 46:15 net stat, nicstat 46:49 pidstat 1 (5) 47:21 swapon 47:33 lsof 47:58 sar (8) 50:38 app is taking forever 50:45 | 51:17 pidstat, system time 50:57 system time, iostat 51:26 am i swapping ? vmstat 51:51 strace

One of the best devops presentations out there. Good job Brendan! You're making the world a better place one step at a time.

Oh hey! You're the author of that observability tools image I have copied to every possible device and storage location so I can always reference it! Hell yeah, thank you!

Thank you for a wonderful session, much appreciated. 👏

I'm troubleshooting a java performance issue at the moment and found this systematic method of analysis very useful. Thanks Brendan.

Nice vid, reinforced some topics for me and learned new stuff. Next time I’ll be more prepared for my Netflix interview 😅

Very informative! keep going!

This is amazing. true love for the bits and bytes

Very Useful content, thank you Brendan

I like how you start off straight to the point when you said that when you are mentored by someone you basically eliminate what you dont need to know lol

Thanks Brendan :) You are awesome.

You sir, are a legend.

So clear and educational, thanks for sharing!

Thank you man, I will definitely copy yours methods

Outstanding content. Very helpful

This is golden

OMG!! I really need it.

brilliant

Thank you!

Excellent

fantastic !

Thank you very much

Hi guys, can anyone tell how is it possible to collect all metrics from Linux and visualize them in windows OS? How to make a bridge or connection between Linux and Windows and what are the technologies to be used.

Very useful thank you !

Perfection !!

Which tools are used for monitoring network usage/performance of a process?

Hi Brendan, You are not by any chance available for freelance performance trouble shooting projects?

Good video :)

"more than 80 characters is a sin in unix world" :):):) didnt know but yea, makes sence. Norway

I'm speechless than you

they present linux but all of them use MacOS

unprepared and confused

wtf is this macintosh :(

too slow

Thank you!