On 12/21/2012 3:00 AM, Toke Eskildsen wrote:
On Tue, 2012-12-18 at 04:57 +0100, Shawn Heisey wrote:
java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:691)
[...]
3) Built and run with oracle jdk 1.7.0_09 on CentOS 6 x64
[...]
Since rebooting and upgrading to 1.7.0_10, I have not seen any further
OOM problems despite pounding on everything repeatedly. Has anyone
else seen anything similar?
Yes, also under CentOS, but with Java 1.6. The cause was a low default
limit for user-space threads (1024 AFAIR). Try calling 'ulimit -a' and
check that "max user processes" is sufficiently large.
If the limit is fairly low, your reboot might explain why switching to
1.7.0_10 seemed to be the solution, as you probably had less running
applications after reboot.
Thank you, that makes perfect sense. I have now added the following to
/etc/security/limits.conf, along with the lines already there that keep
me from exceeding the max number of open files:
ncindex hard nproc 6144
ncindex soft nproc 4096
Thanks,
Shawn
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