Jetty

continuation may cause 100%cpu occasionally!

Details

  • Type: Bug Bug
  • Status: Resolved Resolved
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 6.0.0beta8, 6.0.0beta9, 6.0.0beta10, 6.0.0beta11, 6.0.0beta12, 6.0.0beta14, 6.0.0beta15, 6.0.0beta16, 6.0.0beta17, 6.0.0beta18, 6.0.0RC0, 6.0.0rc1, 6.0.0rc2, 6.0.0rc3, 6.0.0rc4, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.1.0pre0, 6.1.0pre1, 6.1.0pre2, 6.1.0pre3, 6.1.0rc0, 6.1.0rc1, 6.1.0rc2, 6.1.0rc3, 6.1.0, 6.1.1rc0, 6.1.1rc1, 6.1.1, 6.1.2rc0
  • Fix Version/s: 6.1.2rc2
  • Component/s: Continuations
  • Labels:
    None
  • Environment:
    jdk1.5 gentoo-linux
  • Number of attachments :
    1

Description

continuation may cause 100%cpu occasionally.

sun.nio.ch.SelectorImpl.select(long) invoked 314658 times in 16889ms ! (see the YourKit snapshot )

may be the blocking Selector.select method stop blocking occasionally.
CODE SelectorManager.doSelect [
if (wait > 0)
_selector.select(wait); <====================== may return immediately.
else if (wait == 0)
_selector.selectNow();
else
_selector.select();
]

suggest code [
if (wait > 0)

{ int ret = _selector.select(wait); if (ret == 0) Thread.sleep(1000); //do something }

else if (wait == 0)
_selector.selectNow();
else
_selector.select();

]

Activity

Ascending order - Click to sort in descending order
Greg Wilkins made changes -
Field Original Value New Value
Assignee Greg Wilkins [ gregw ]
Greg Wilkins made changes -
Fix Version/s 6.1.2rc2 [ 13310 ]
Status Open [ 1 ] Resolved [ 5 ]
Resolution Fixed [ 1 ]
Greg Wilkins made changes -
Comment [ This is a wonderful opinion. The things mentioned are unanimous and
needs to be appreciated by everyone.
______________________
jamesmatthew363
 
<a href="http://www.servetechnology.com" rel="dofollow">Serve Technology</a>
]

People

  • Assignee:
    Greg Wilkins
    Reporter:
    Boyce Lee
Vote (0)
Watch (2)

Dates

  • Created:
    Updated:
    Resolved: