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

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

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. 👏

This is amazing. true love for the bits and bytes

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

Outstanding content. Very helpful

Very Useful content, thank you Brendan

So clear and educational, thanks for sharing!

Very informative! keep going!

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.

OMG!! I really need it.

Excellent

brilliant

Perfection !!

Thank you man, I will definitely copy yours methods

Thank you!

Very useful thank you !

This is golden

fantastic !

Thank you very much

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

Good video :)

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.

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

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

I'm speechless than you

unprepared and confused

wtf is this macintosh :(

too slow

Thank you!