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https://issues.jboss.org/browse/AS7-3809?page=com.atlassian.jira.plugin.s...
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Luka Furlan commented on AS7-3809:
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Hi,
sudo doesn't really help here. Sure, you are able to modify the ulimit values using
limits.conf or similar, but this only works if you want to make the changes for a certain
user/group or system wide. But if you use ulimit directly, it raises or lowers (which I
assume caused problems with your tests) limits per process, that is why it is usually put
in startup scripts.
This brings us back to the point, where users, who don't want to give too many
resources to the whole system/user/group, will just have to implement this functionality
by themselves.
Limit of open file descriptors missing in standalone.sh/domain.sh in
AS7
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Key: AS7-3809
URL:
https://issues.jboss.org/browse/AS7-3809
Project: Application Server 7
Issue Type: Feature Request
Components: Scripts, Server
Affects Versions: 7.1.0.Final
Reporter: Luka Furlan
Assignee: Stuart Douglas
Priority: Minor
Labels: as7, scripts, ulimit
Fix For: 7.1.1.Final
In AS6 run.sh script included an option to raise the limit of open file descriptors. In
AS7, where run.sh was replaced by standalone.sh/domain.sh, MAX_FD variable still exists,
but it's not used.
If you decide to include this functionality in AS7, it would be great if the flow of the
script would be changed, so it doesn't immediately stop when MAX_FD could not be set,
but it tries with a lower value. Something like:
{noformat}
STEP_VALUE=50
i=${MAX_FD}
while [ ${i} -gt 0 ]; do
if ulimit -n ${i} 2> /dev/null 1>&2; then
percent=`expr ${i} \* 100 \/ ${MAX_FD}`
echo "Open files limit set to ${i} (${percent}% value of desired
${MAX_FD})."
exit 0
else
i=`expr ${i} - ${STEP_VALUE}`
fi
done
{noformat}
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