Rainer,
No change with the urandom parm. I am attaching a portion of the
Catalina log. The first half shows between 8 and 15 seconds to deploy
each app for a single virtual host (there are no war files, the app is
already exploded in the appbase dir). I have quite a few virtual
hosts with several apps each. That initial server start took 21+
minutes. I then restarted the TC service and got the ~.5 sec start
per webapp shown in the 2nd half of the log below.
Can you refresh me on how to capture the stack dumps you suggested?
It's been a while....
Thx.
Jerry
First start of Tomcat after server reboot
---------------------------------------------------------------------
[C:\domains\<myDomain>.com\webapps\JSPWiki.war] has finished in
[8,579] ms
tory [C:\domains\<myDomain>.com\webapps\cis]
irectory [C:\domains\<myDomain>.com\webapps\cis] has finished in
[11,486] ms
tory [C:\domains\<myDomain>.com\webapps\gallery]
irectory [C:\domains\<myDomain>.com\webapps\gallery] has finished in
[9,204] ms
tory [C:\domains\<myDomain>.com\webapps\gl]
irectory [C:\domains\<myDomain>.com\webapps\gl] has finished in
[8,469] ms
tory [C:\domains\<myDomain>.com\webapps\idmanager]
irectory [C:\domains\<myDomain>.com\webapps\idmanager] has finished in
[8,689] ms
tory [C:\domains\<myDomain>.com\webapps\itemtrack]
irectory [C:\domains\<myDomain>.com\webapps\itemtrack] has finished in
[6,907] ms
tory [C:\domains\<myDomain>.com\webapps\malcolment]
irectory [C:\domains\<myDomain>.com\webapps\malcolment] has finished
in [8,469] ms
tory [C:\domains\<myDomain>.com\webapps\notebook]
irectory [C:\domains\<myDomain>.com\webapps\notebook] has finished in
[10,189] ms
tory [C:\domains\<myDomain>.com\webapps\order]
irectory [C:\domains\<myDomain>.com\webapps\order] has finished in
[8,501] ms
tory [C:\domains\<myDomain>.com\webapps\payment]
irectory [C:\domains\<myDomain>.com\webapps\payment] has finished in
[14,209] ms
tory [C:\domains\<myDomain>.com\webapps\projectmanager]
irectory [C:\domains\<myDomain>.com\webapps\projectmanager] has
finished in [9,018] ms
[C:\Tomcat 9.0\conf\Catalina\myridetx.net\manager.xml]
ptor [C:\Tomcat 9.0\conf\Catalina\myridetx.net\manager.xml] has
finished in [62] ms
Restart of Tomcat
---------------------------------------------------------------------
tory [C:\domains\<myDomain>.com\webapps\cis]
irectory [C:\domains\<myDomain>.com\webapps\cis] has finished in [594] ms
tory [C:\domains\<myDomain>.com\webapps\gallery]
irectory [C:\domains\<myDomain>.com\webapps\gallery] has finished in
[547] ms
tory [C:\domains\<myDomain>.com\webapps\gl]
irectory [C:\domains\<myDomain>.com\webapps\gl] has finished in [562] ms
tory [C:\domains\<myDomain>.com\webapps\idmanager]
irectory [C:\domains\<myDomain>.com\webapps\idmanager] has finished in
[578] ms
tory [C:\domains\<myDomain>.com\webapps\itemtrack]
irectory [C:\domains\<myDomain>.com\webapps\itemtrack] has finished in
[547] ms
tory [C:\domains\<myDomain>.com\webapps\malcolment]
irectory [C:\domains\<myDomain>.com\webapps\malcolment] has finished
in [579] ms
tory [C:\domains\<myDomain>.com\webapps\notebook]
irectory [C:\domains\<myDomain>.com\webapps\notebook] has finished in
[547] ms
tory [C:\domains\<myDomain>.com\webapps\order]
irectory [C:\domains\<myDomain>.com\webapps\order] has finished in
[531] ms
tory [C:\domains\<myDomain>.com\webapps\payment]
irectory [C:\domains\<myDomain>.com\webapps\payment] has finished in
[562] ms
tory [C:\domains\<myDomain>.com\webapps\projectmanager]
irectory [C:\domains\<myDomain>.com\webapps\projectmanager] has
finished in [531] ms
On 5/18/2019 3:18 PM, Rainer Jung wrote:
Most likely it hangs waiting for enough entropy for random number
generator seeding.
Try whether the problem goes away if you add
-Djava.security.egd=file:/dev/urandom
to you process flags. If you are using older Java than Java 8 (not
possible for Tomcat 9 but just in case you also have older software
stacks running), then it would be
-Djava.security.egd=file:/dev/./urandom
The cryptic /./ is not a typo, you would need it for Java before Java 8.
If this doesn't help, then you should try capturing a few stack dumps
(thread dumps) during the long startup time. People here can help
interpret them.
Regards,
Rainer
Am 18.05.2019 um 21:55 schrieb Jerry Malcolm:
This is a weird one. It started a few months ago. I have TC 9
running on Windows Server 16. After I reboot the entire server,
Tomcat takes forever on startup. It normally starts in about 30
seconds. But after a server reboot it takes up to 15 minutes...
chugging along at a snail's pace starting up all of the apps on all
of the virtual hosts. It always finally gets there with everything
successfully running. Other servers on the same box (Apache, JAMES,
ISC BIND, MySQL) don't have any problem starting up. CPU, Disk,
Memory, etc. usages are barely showing on the performance graphs.
There's nothing in the Catalina log or system.err other than showing
a couple of minute gap in the time stamp between each app as it
starts up. If I need to reboot again later, it boots again in about
30 sec as expected.
First question... any ideas off the top of your head that might be
causing this?
Second question... is there any other logging I can turn on that
might explain what TC is blocking on?
Thanks.
Jerry
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