Linux Performance Tools, Brendan Gregg, part 1 of 2

[@domaincontroller]

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

[@JoJo-fy2vb]

7:46 iostat -x 1

[@yangroger1216]

thx

[@ranjansantra]

Thanks for this list!

[@OryBand]

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

[@rhugga]

Performance tuning is not dev ops. This is basic, fundamental systems administration.

[@atom_rr]

@@rhugga hope that he knows what devops is nowadays...

[@sollybrown8217]

Not surprised when he said he worked for Netflix. Makes sense that their hires are giving talks on using top as a measure of perf lol. Genius idea.

[@abdullahadel1141]

Thank you for a wonderful session, much appreciated. 👏

[@Locane256]

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!

[@TirajAdikari]

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

[@ks_132]

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

[@supremepancakes4388]

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

[@ArslanFarooqQureshi]

You sir, are a legend.

[@king0s]

This is golden

[@karthiknedunchezhiyan1171]

Very informative! keep going!

[@bhanureddy8780]

This is amazing. true love for the bits and bytes

[@jaashutosh]

Very Useful content, thank you Brendan

[@subhabera5775]

Thanks Brendan :) You are awesome.

[@davidleal714]

Thank you man, I will definitely copy yours methods

[@rchaudry]

Thank you!

[@ruoxizhang9486]

So clear and educational, thanks for sharing!

[@umamaheshsukamanchi]

Outstanding content. Very helpful

[@shankerlee]

brilliant

[@bimalacharya9020]

fantastic !

[@azufendusgarendum6583]

Thank you very much

[@bullishtradersoul]

Excellent

[@charle09111]

OMG!! I really need it.

[@dineshrathee3306]

Perfection !!

[@harshbhadoria7200]

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.

[@yunuskoning7584]

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

[@anglojojo]

Good video :)

[@QuadDerrick]

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

[@elabeddhahbi3301]

I'm speechless than you

[@sealovers1374]

they present linux but all of them use MacOS

[@sigridopps3049]

unprepared and confused

[@ManiBalajiC]

thats why he is the head of the netflix system performance.

[@sollybrown8217]

@@ManiBalajiCye lol. Their engineers just figured out that the top command shows performance. Bronze age is right around the corner.

[@retropaganda8442]

wtf is this macintosh :(

[@chenyifa]

too slow

[@AndreKhan716]

Thank you!

[@pixelPlex]

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

[@moustaphakourouma9402]

Very useful thank you !