I think you have to go back to SunOS 4 or so to be able to get right into single-user mode with no password

richlowe: I feel like if you "boot -a" it _asks_ you where /sbin/init is

[illumos-gate] 16222 TSC vmware calibration could be more general -- Patrick Mooney <pmooney⊙pc>

hello all, what’s the dtrace command or script can be used to generate ZFS call stack and used to check the performance, like this rfd.shared.oxide.computer/rfd/image/490/flamegraph.png , anyone could share me the script or command? thank you very much, I’m going to check if ZFS had performance issue with postgres, best wishes

tozhu: I assume that one was generated by the "flamegraph" command, which is written in Rust. I know Matt Keeter (who I believe wrote the RFD you're looking at there) has been working on it, e.g., flamegraph-rs/flamegraph #334

jclulow: thank you, flamegraph command used to generate the picture, I need the script used to generate the data which used to generate the picture, thank you

tozhu: I believe that program can also drive DTrace to get the data

jclulow, thank you very much for the advice, I’ll take a look, thank you

jclulow: the tool is really cool, thank you, and thanks for Matt Keeter

Excellent!

There is also github.com/brendangregg/FlameGraph.git -- it does provide many samples about data collecting and other bits.

tsoome_ thank you very much

yw

I have found that the hardest part is to target the data gathering to the moment you actually need to profile :D

[illumos-gate] 15488 libbsm: storing the address of local variable -- Toomas Soome <tsoome⊙mc>

.oO slowly getting to more recent gcc :P

the only way to do it, is either have a block of free time, or to pick a version and _stick to it_

even if people complain that N+1 is now available

I don't believe illumos is at a place we can ever actually catch up in one leap

xeno's paradox, etc.

(but there're also all the quality fixes that attempting it brings in...)

currently, if you fail to set NIGHTLY_OPTIONS in the environment file, nightly fails with a usage error, in a somewhat roundabout way.

(you get a usr/src/tools/scripts/nightly: -a: unknown option error first)

because it defaults NIGHTLY_OPTIONS to "-aBm" if it is unset after the environment file.

and -a went away in 78add226e8da271dde8f3b5a91d340d1bf010151 in 2010

(-a was used to create BFU archives)

so I'm running with richlowe's suggestion to add a few command line options to nightly (to set CODEMGR_WS and BRINGOVER_WS) and noticed this oddity when searching for option letters to use.

[illumos-gate] 16734 ktest is not i386 specific -- Richard Lowe <richlowe⊙rn>

so I could fix it by changing to a safe default (B is an undocumented flag that is treated as equivalent to D, so "-Dmn") or else have it just spit out the usage message.