Openjdk-infrastructure: Access request for lumpfish to test-macstadium-macos1014-x64-3

[lumpfish]

Access level:

• [ ] Non-privileged
• [ X] jenkins user
• [ ] root/Administrative
• [ ] other (Please specify):

System for which access is needed: test-macstadium-macos1014-x64-3

I'm trying to explicitly set max user processes for a system test which fails on linux if < 1500 or so (https://github.com/AdoptOpenJDK/openjdk-infrastructure/issues/1851). The command does not work on osx - there are no error messages, but ulimit -u returns the original value after running the command to modify it.

Max user processes is modified as expected on a local Mac laptop - I would like to check the ulimit behaviour on a Jenkins test machine.

[sxa]

Access granted to [email protected] ... The machine has been marked offline in jenkins

[sxa]

FYI for future reference if you remove the space before the x in the main message i.e. use [x] instead of [ x] then it'll show up as a correctly checked tickbox - looks a bit nicer :-)

[lumpfish]

So - ulimit -u does get ignored on the Jenkins test machine with eithe rthe default shell or the gnu bash shell. The gnu bash shell also gives an error message.

Default shell:

test-macstadium-macos1014-x64-3:~ jenkins$ launchctl limit
        cpu         unlimited      unlimited
        filesize    unlimited      unlimited
        data        unlimited      unlimited
        stack       8388608        67104768
        core        0              unlimited
        rss         unlimited      unlimited
        memlock     unlimited      unlimited
        maxproc     1418           2128
        maxfiles    256            unlimited

test-macstadium-macos1014-x64-3:~ jenkins$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 1418
virtual memory          (kbytes, -v) unlimited

test-macstadium-macos1014-x64-3:~ jenkins$ ulimit -u 2048

test-macstadium-macos1014-x64-3:~ jenkins$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 1418
virtual memory          (kbytes, -v) unlimited

With /usr/local/bin/bash

bash-5.0$ launchctl limit
        cpu         unlimited      unlimited
        filesize    unlimited      unlimited
        data        unlimited      unlimited
        stack       8388608        67104768
        core        0              unlimited
        rss         unlimited      unlimited
        memlock     unlimited      unlimited
        maxproc     1418           2128
        maxfiles    256            unlimited

bash-5.0$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 1418
virtual memory          (kbytes, -v) unlimited

bash-5.0$ ulimit -u 2048
bash: ulimit: max user processes: cannot modify limit: Operation not permitted

bash-5.0$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
file size               (blocks, -f) unlimited
max locked memory       (kbytes, -l) unlimited
max memory size         (kbytes, -m) unlimited
open files                      (-n) 256
pipe size            (512 bytes, -p) 1
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) 1418
virtual memory          (kbytes, -v) unlimited

The command was run successfully on a local Mac laptop (running 10.15.7), though I don't know if that user has priveleges the Jenkins user does not.

The test which fails on Linux with a low-ish max user processes does not also fail on osx - so we can just not run the command on osx or run it and let it fail,

I think I prefer not running it with an appropriate comment in the code.

[lumpfish]

Unless there's more investigation required (and a suggestion as to what investigation to do), I no longer need the machine access.