-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Jerry,
On 5/20/19 14:05, Jerry Malcolm wrote: > Andre, > > Your theory sounds like a real possibility. It would explain why > it only blows up the first time after a reboot. I'll test the > theory tonight during off-peak use hours for the web sites I host. If André's theory is correct, you will probably find that 2-3 months ago the version of your virus scanner was upgraded, and all of the whitelisted applications (like Tomcat) were lost. If that's the case, you can probably re-whitelist Tomcat and get your performance back. At least until the next upgrade. - -chris > On 5/20/2019 3:43 AM, André Warnier (tomcat) wrote: >> On 20.05.2019 00:09, Jerry Malcolm wrote: >>> Just an FYI.... this server has been in production a little >>> over a year. This TC load problem only started 2-3 months ago. >>> So 'something' changed to cause this problem to manifest >>> itself. It's been too long to try to correlate a specific >>> server change to the start of this problem. But I just wanted >>> to point out that this problem has NOT been around since day 1 >>> on this server. >> >> Just in case, since this is a Windows server .. 2-3 months ago, >> an update of a virus scanner ? (of the intrusive kind which >> pre-checks each file that wants to be opened) Checking may be >> easy or not, depending on your access : disable the virus scanner >> just the time to start tomcat and check. >> >>> >>> Jerry >>> >>> On 5/19/2019 5:03 PM, Jerry Malcolm wrote: >>>> 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 >>>>> >>>>> ------------------------------------------------------------------ - --- >>>>> >>>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>>> For additional commands, e-mail: >>>>> users-h...@tomcat.apache.org >>>>> >>>> >>>> ------------------------------------------------------------------- - -- >>>> >>>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>>> For additional commands, e-mail: >>>> users-h...@tomcat.apache.org >>>> >>> >>> -------------------------------------------------------------------- - - >>> >>> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >>> For additional commands, e-mail: users-h...@tomcat.apache.org >>> >> >> >> --------------------------------------------------------------------- >> >> To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org >> For additional commands, e-mail: users-h...@tomcat.apache.org >> > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - https://www.enigmail.net/ iQIzBAEBCAAdFiEEMmKgYcQvxMe7tcJcHPApP6U8pFgFAlzkEWoACgkQHPApP6U8 pFinLRAAttjrmJnG6lwB3pd7kT5IpBk5H/MwJdXvEX8/S/k6MLLgWqWmqQhgRQAZ UeVqJFJFDCrgXymxXNI2f7k3saVA+2Lxafjuft9WQGKs+mTSQR0s82VG6Iko5JzL dZxA5XD+SSU6PafTMQ1hmlVMMDeug+ONqMcUY2XFoZSV6TUk6KqjMiod74We7/b8 7PSqI4VWSS6fA4/ZoPJNRvGLXtYDu1obVX3YysMb4tSky/5OenJX6rz0mwMenY0z F2p2G2ObNlLKUq7DuAhBcLHB4lbkEv+20Zv6hqMGPlFB8rjiOpUpL86/gfdJY29z KGgWLAw1M4rw2n0GjVihcfYfjVBA931wWwkaXpa6cXCrcyjOcgCH+OlhIqjtoHkW w6mM9m99LqrWRwqqfiHDDxqywdqukfGANwi1QvaPgVkd0+FwGkinh5G3P9au3cLs JKdpGgEog1hJnjkkXWwROlozKiKjMD82V474E4mwjw7nqPI/YXXL5E8VTlhm11JB OWDZ8yNgwA//Aw7JbGdAUPqRSsSqrKIyGYr4voDd6nhs+83R/7z27IyIxgw/kzFU 6xRFOorztK5dOR5TqPZYB67qUL39++fpdayTYDs7f5Y8guajOsWgVTrvWo3bxCkg CxUE7V91tWJYJKlxgbFZyZp4vvSzabf4dq5fxKhPTkYH9pmHhCs= =z1un -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
