Sysdig
Dev tools
system tracing
SHOW HN2014
171points
48comments
#129of 2,272 in 2014
Top 6%of 2014 by points
How HN took it
DebatedReal support and real criticism
7 positive, 7 neutral or asking, 2 mixed, 6 critical, out of 22 comments about the project. Thread score +0.04.
Execution: 3 for, 3 againstPerformance: 0 for, 2 againstIdea: 1 for, 1 againstDocs: 1 for, 0 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Easy to use with low overhead and useful one-liners
From 3 comments
Impressive. Easy to get going, low overhead, powerful one-liners. I like the filter syntax - would be nice for perf_events to pick this up. Although, if it did, I hope that the…
brendangregg on HNI had the privilege of early access to sysdig thanks to the developers. It's not as powerful as SystemTap or DTrace but it is very useful and easy to use. Think of it as…
otterley on HNLooks very useful. Some things you can do with it: Dump system activity to file, so that sysdig can be used to process it later. * sysdig -w trace.scap Print process name and…
shubb on HN
Packaging and DKMS kernel module handling praised
From 2 comments
I had the privilege of early access to sysdig thanks to the developers. It's not as powerful as SystemTap or DTrace but it is very useful and easy to use. Think of it as…
otterley on HNGiven that it involves a kernel module, I was kind of skeptical- but Greg KH seems to have looked it over and fixed it up, which I'd call a compelling seal of approval:…
krakensden on HN
Objections
Performance overhead measured as high versus DTrace in a dd microbenchmark
From 2 comments
Impressive. Easy to get going, low overhead, powerful one-liners. I like the filter syntax - would be nice for perf_events to pick this up. Although, if it did, I hope that the…
brendangregg on HNA 1 gigabyte no-IO dd is an unusual microbenchmark: it stresses only syscall rates while wasting time with memcpy. (A loop on getpid() or equivalent would have worked just as…
fche on HN
Requires a kernel module
From 1 comment
"The definitive tool" they name it, yet its not as powerful as dtrace. So, its not definitive. Looks nice otherwise. Too bad it needs a kernel module.
zobzu on HN
Install via pipe to sudo bash over http
From 2 comments
Ah, the good ol' pipe through sudo bash installation instructions. I wish there was a more structured platform independent way of distributing stuff before the stuff is packaged…
yxhuvud on HNpipe sudo bash is one thing, delivery of said bash script over http:// is quite another. An https link should be the default IMHO. edit: the tool looks really useful though.
yourad_io on HN
Less powerful than DTrace or SystemTap
From 2 comments
"The definitive tool" they name it, yet its not as powerful as dtrace. So, its not definitive. Looks nice otherwise. Too bad it needs a kernel module.
zobzu on HNI had the privilege of early access to sysdig thanks to the developers. It's not as powerful as SystemTap or DTrace but it is very useful and easy to use. Think of it as…
otterley on HN
Requests
Better documentation and README explaining what it does
From 2 comments
I like that you link to the github, where the README is a link to your more-slick website, which has nothing but a couple of examples and an install page, all of which is really…
peterwwillis on HNSee, that is a really good description that would be useful in a README. Right away I know what it is, what it does and whether I should use it.
peterwwillis on HN
Upstream kernel inclusion of the driver
From 1 comment
Any chance you are working on getting this upstream? I noticed Greg KH as one of the contributors
SEJeff on HN
Overview of Linux instrumentation tools
From 1 comment
I feel like some introductory article about the different instrumentation facilities available for Linux systems would be welcome. Just checking wikipedia and google, I found the…
zokier on HN
Questions
How does its design differ from SystemTap and ktap
From 1 comment
I would like to know what's going more low level, Ktap gives a good break down how they differ from SystemTap, dynamically typed, byte-code design... etc…
joshbaptiste on HN
Why a kernel module was needed versus perf_event_open ring buffer
From 1 comment
A 1 gigabyte no-IO dd is an unusual microbenchmark: it stresses only syscall rates while wasting time with memcpy. (A loop on getpid() or equivalent would have worked just as…
fche on HN
Build errors on Arch Linux and permission errors reading /proc
From 2 comments
I am getting error during compiling on Arch linux: https://github.com/draios/sysdig/issues/39 Has anyone encounter with this error before? Any help would be appreciated.
mesuutt on HNAfter installing sysdig, when I trying to run it I get the following error: # sysdig fd.type=ipv4 error creating the process list Has anyone seen this one before? Any help would…
neuronsourcing on HN
Alternatives named
DTrace
From 2 comments
Impressive. Easy to get going, low overhead, powerful one-liners. I like the filter syntax - would be nice for perf_events to pick this up. Although, if it did, I hope that the…
brendangregg on HN"The definitive tool" they name it, yet its not as powerful as dtrace. So, its not definitive. Looks nice otherwise. Too bad it needs a kernel module.
zobzu on HN
SystemTap
From 2 comments
A 1 gigabyte no-IO dd is an unusual microbenchmark: it stresses only syscall rates while wasting time with memcpy. (A loop on getpid() or equivalent would have worked just as…
fche on HNI had the privilege of early access to sysdig thanks to the developers. It's not as powerful as SystemTap or DTrace but it is very useful and easy to use. Think of it as…
otterley on HN
strace
From 2 comments
Impressive. Easy to get going, low overhead, powerful one-liners. I like the filter syntax - would be nice for perf_events to pick this up. Although, if it did, I hope that the…
brendangregg on HNI had the privilege of early access to sysdig thanks to the developers. It's not as powerful as SystemTap or DTrace but it is very useful and easy to use. Think of it as…
otterley on HN
ktap
From 1 comment
I would like to know what's going more low level, Ktap gives a good break down how they differ from SystemTap, dynamically typed, byte-code design... etc…
joshbaptiste on HN