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
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 running a Spark application and I always getting an out of memory exception..
Exception in thread "main" java.lang.OutOfMemoryError: unable to create new native thread
I run my program under local[5] in a node cluster on linux but it stills gives me this error..can someone point me how to rectify that in my Spark application..
Looks like some problem with ulimit configured on your machine. Run the ulimit -a command, you will see below result.
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 63604
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 10240
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) 63604
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
check the open files and max user processes configured values. It should be high.
You can configure them using below commands:
ulimit -n 10240
ulimit -u 63604
Once you are done with configuration of ulimits. You can start your application to see the effect.
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
I have installed Wowza Media Server 3.5 on a CentOS based VPS. During starting Wowza media server for first time i got the error.
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Which i suppose is due to memory allocation for JVM
The output of 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) 794624
max locked memory (kbytes, -l) 32
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) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 1024
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
And of
free -m
total used free shared buffers cached
Mem: 1024 1024 0 0 0 0
-/+ buffers/cache: 1024 0
Swap: 0 0 0
There is also an alias entry like
alias java='java -Xms8m -Xmx64m'
Which could also be the reason for JVM error.