I am trying to get guitarix and jack running on the Raspberry Pi 2 (+ Cirrus audio card) with raspbian.
When starting jack via qjackctl, I get the errors
Cannot lock down 82278944 byte memory area (Cannot allocate memory)
Cannot use real-time scheduling (RR/10)(1: Operation not permitted)
It seems changes to /etc/security/limits.conf do not apply but to /etc/security/limits.d/audio.conf do.
I tried setting the memory lock size for the user and group:
#audio - rtprio 90 # maximum realtime priority
#audio - memlock unlimited # maximum locked-in-memory address space (KB)
#audio - nice -10
pi - rtprio 90
pi - memlock unlimited
pi - nice -10
From ssh I get a satisfactory result:
pi#raspberrypi ~ $ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 30
file size (blocks, -f) unlimited
pending signals (-i) 7349
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 90
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7349
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
But from the desktop terminal I access via vnc I get
pi#raspberrypi ~ $ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 7349
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 7349
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
How can the same user have different settings and how do I get rt and memory allocation running on the desktop?
It seems to have been a problem with the PAM configuration as stated here.
Uncommenting the line in /etc/pam.d/su did the trick.
# session required pam_limits.so
Related
The error is coming only while printing reports which has more than
150 pages.
wkhtmltopdf version : 0.12.5 (with patched qt)
OS : Ubuntu 20.04.3 LTS
CPU(s) : 48
Memory(RAM): 94GB
ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 377646
max locked memory (kbytes, -l) 65536
max memory size (kbytes, -m) unlimited
open files (-n) 200000
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 200000
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
odoo configuration file
limit_memory_hard = 78114717696
limit_memory_soft = 65095598080
Is it possible to expand locked memory limit on Google Colab notebooks? It runs on a Ubuntu 18.04 VM.
I'm running
ulimit -l unlimited
But I receive this in response
ulimit: max locked memory: cannot modify limit: Operation not permitted
This is what ulimit -a returns
core file size (blocks, -c) unlimited
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 51915
max locked memory (kbytes, -l) 16384
max memory size (kbytes, -m) unlimited
open files (-n) 1048576
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) unlimited
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Yes, by running this:
i = 0
while True:
i += 1
After 20 seconds, google with make your GPU virtual memory bigger.
I am using the Linux 12 SP2 . It always failed to create the thread when the thread is more than 420 .
Error log:
Exception in thread "main" java.lang.OutOfMemoryError: unable to create new native thread (424 threads running, rlimit: STACK 8192k, CORE 0k, NPROC 30654, NOFILE 16394, AS infinity, DATA infinity, CPU infinity, FSIZE infinity, MEMLOCK 64k , Memory: 4k page, physical 528062120k(345461208k free), swap 2097148k(2097148k free) )
From the log, you can see the server capacity is good enough for more thread creation. Actually there is quite a few thread is running under OS . Do you have any idea about this issue ?
See below details :
ps -aux | wc -l
379
cat /proc/sys/vm/max_map_count
65530
cat /proc/sys/kernel/pid_max
32768
cat /proc/sys/kernel/threads-max
4125328
ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 2062664
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 8192
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 30654
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
I have a multi-threaded java application that spawns as many thread as the reports to be done in a certain moment. At the end of the process, I generate an Excel file with Apache POI (3.15) with WorkbookFactory.create(file), where file is an empty template I use to create a brand new Excel file.
With a particular intensive report (it takes hours to be generated), when the code reaches this point, it throws this exception:
Caused by: java.nio.channels.ClosedByInterruptException
at java.nio.channels.spi.AbstractInterruptibleChannel.end(AbstractInterruptibleChannel.java:202)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:163)
at org.apache.poi.util.IOUtils.readFully(IOUtils.java:164)
at org.apache.poi.poifs.filesystem.NPOIFSFileSystem.<init>(NPOIFSFileSystem.java:229)
at org.apache.poi.poifs.filesystem.NPOIFSFileSystem.<init>(NPOIFSFileSystem.java:168)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:250)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:222)
at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:201)
at it.habble.report.designers.InvoiceCheckDesigner.<init>(InvoiceCheckDesigner.java:87)
I've read somewhere it could be related to limits.conf file. Have you any advices on how to investigate on this? Current values:
[user#localhost ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 191942
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 8192
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 2048
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
I'm using 32bit Amazon Linux (Centos?). Per the blog http://gnufreakz.wordpress.com/2009/08/12/increase-ulimit-in-centos/ I tried changing some parameters.
I added the below line to /etc/sysctl.conf
fs.file-max = 65536
and ran sysctl -p
I added the below line to /etc/security/limits.conf
* hard nofile 65536
No luck! After a restart, ulimit -a still gives me:
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 26597
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 1024
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Try adding
ulimit -n 65536
to your /etc/profile or to /home/[username]/.bash_profile