> -Original Message-
> From: Mark Thomas
> Sent: Wednesday, May 29, 2024 10:19 AM
> To: users@tomcat.apache.org
> Subject: Re: Database Connection Requests Initiated but Not Sent on the Wire
> (Some, Not All)
>
> On 29/05/2024 16:08, Eric Robinson wrote:
>
&g
Hi Mark,
> -Original Message-
> From: Mark Thomas
> Sent: Wednesday, May 29, 2024 10:10 AM
> To: users@tomcat.apache.org
> Subject: Re: Database Connection Requests Initiated but Not Sent on the Wire
> (Some, Not All)
>
> On 29/05/2024 13:38, Eric Robinson w
Mark,
A few other thoughts come to mind. See below.
> -Original Message-
> From: Eric Robinson
> Sent: Wednesday, May 29, 2024 7:39 AM
> To: Tomcat Users List
> Subject: RE: Database Connection Requests Initiated but Not Sent on the Wire
> (Some, No
> > On 28/05/2024 16:26, Eric Robinson wrote:
> >
> >
> >
> >> Took a bunch of thread and heap dumps during today's painful debacle.
> >> Will send a link to those as soon as I can.
> >
> > Thanks. I have them. I have taken a look and I am
Hi Mark,
See comments below.
> -Original Message-
> From: Mark Thomas
> Sent: Tuesday, May 28, 2024 9:32 AM
> To: Tomcat Users List
> Subject: Re: Database Connection Requests Initiated but Not Sent on the Wire
> (Some, Not All)
>
> Hi Eric,
>
> Follow-up observsations and comments
questions in-line. I have also read the other
> messages in
> this thread and added a couple of additional questions based on what I read in
> those threads.
>
>
> On 26/05/2024 02:58, Eric Robinson wrote:
> > One of our hosting customers is a medical practice using a commerci
Hi Chuck,
> -Original Message-
> From: Chuck Caldarale
> Sent: Sunday, May 26, 2024 2:21 PM
> To: Tomcat Users List
> Subject: Re: Database Connection Requests Initiated but Not Sent on the Wire
> (Some, Not All)
>
>
> > On May 25, 2024, at 20:58, Eri
t; > -Ursprüngliche Nachricht-
> > Von: Chuck Caldarale
> > Gesendet: Sonntag, 26. Mai 2024 21:21
> > An: Tomcat Users List
> > Betreff: Re: Database Connection Requests Initiated but Not Sent on
> > the Wire (Some, Not All)
> >
> >
> >
t; > -Ursprüngliche Nachricht-
> > Von: Eric Robinson
> > Gesendet: Sonntag, 26. Mai 2024 03:59
> > An: users@tomcat.apache.org
> > Betreff: Database Connection Requests Initiated but Not Sent on the
> > Wire (Some, Not All)
> >
> > One of
One of our hosting customers is a medical practice using a commercial EMR
running on tomcat+mysql. It has operated well for over a year, but users have
suddenly begun experiencing slowness for about an hour at the same time every
day. During the slow times, we've done all the usual
new message to the list.
>
> You also need to provide some version information.
>
> Mark
>
>
> On 06/07/2023 00:36, Eric Robinson wrote:
> > We've been seeing problems with failed requests where the response comes
> back with duplicate chunked encoding headers:
> &
We've been seeing problems with failed requests where the response comes back
with duplicate chunked encoding headers:
[Response]
HTTP/1.1 200
Strict-Transport-Security: max-age=86400; includeSubDomains;
Cache-Control: no-cache,no-store
isAuthenticated: true
X-FRAME-OPTIONS: SAMEORIGIN
to me soon hopefully.
> -Original Message-
> From: Christopher Schultz
> Sent: Monday, January 3, 2022 9:10 AM
> To: users@tomcat.apache.org
> Subject: Re: Do I Need Network NameSpaces to Solve This
> Tomcat+Connector/J Problem?
>
> Eric,
>
> On 12/30/21 1
Hi Rob,
> > On Dec 30, 2021, at 4:03 PM, Eric Robinson
> wrote:
> >
> > Chris,
> >
> > If I want to ignore the vendor's recommendation and try connection
> pooling anyway, is that something I can enable with a config file setting, or
> do
> th
Chris,
If I want to ignore the vendor's recommendation and try connection pooling
anyway, is that something I can enable with a config file setting, or do they
actually have to trigger it from within their code?
> -Original Message-
> From: Eric Robinson
> Sent: Thursday, De
> José,
>
> > -Original Message-
> > From: José Cornado
> > Sent: Thursday, December 30, 2021 12:00 PM
> > To: Tomcat Users List
> > Subject: Re: Do I Need Network NameSpaces to Solve This
> > Tomcat+Connector/J Problem?
> >
> > But they do not get a corresponding database instance?
> >
José,
> -Original Message-
> From: José Cornado
> Sent: Thursday, December 30, 2021 12:00 PM
> To: Tomcat Users List
> Subject: Re: Do I Need Network NameSpaces to Solve This
> Tomcat+Connector/J Problem?
>
> But they do not get a corresponding database instance?
>
They do. Each tomcat
Chris,
> Not pooling connections will very likely negatively affect performance.
>
> When you say "they ... have an issue with connection pooling" do you mean
> that they have a technical problem, or do you mean that there is some ill-
> conceived policy against them?
>
> Oh, maybe they are
Chris,
> Stupid question: can your database (meaningfully) handle the number of
> connections you are making to it? Let's say you have 5000 connections per
> Tomcat instance to your database, and you want 500 Tomcat instances.
> That means 250 database connections. If every single one of
Stefan,
> A third option could be to add something between database client and
> server. Something on layer 4 like multiple HAProxy servers or simple NAT
> gateways. Or more complex on layer 7 specfic products like ProxySQL or
> MaxScale. They could even pool connections and reduce the load on
José,
> Is this setup going to be open to the world or just a big organization? A big
> organization would put a cap on the number of users. Then maybe they
> could divide those between the tomcat instances thus the db server.
>
It's a SaaS solution, where each customer organization gets its own
Mark,
> > My question is, is there a better way?
>
> I can only think of variations on a theme.
>
> The ~64k limit assumes client IP, server IP and server port remain constant.
> i.e. just client port is varying.
>
> That suggests there is a single IP for the database server and that it is
>
Hi Simon,
> I guess the database is not on the Tomcat host, otherwise you could connect
> via unix domain socket to avoid the limitations of TCP port numbers.
>
> Otherwise I think you could run a db proxy where your Tomcat clients
> connect locally via unix domain socket and the proxy relays
> Your problem seems to be in the client-to-db server side of things. Not
> tomcat as a server.
>
In the context of this question, tomcat is the client.
> On Wed, Dec 29, 2021 at 2:11 PM Eric Robinson
> wrote:
>
> > We want to run a large number of tomcat inst
> -Original Message-
> From: Mark Eggers
> Sent: Wednesday, December 29, 2021 6:18 PM
> To: users@tomcat.apache.org
> Subject: Re: Do I Need Network NameSpaces to Solve This
> Tomcat+Connector/J Problem?
>
> Eric:
>
> On 12/29/2021 1:04 PM, Eric Robinson wro
We want to run a large number of tomcat instances on the same server without
virtualization or containerization. Each instance is executed from its own
folder tree and listens on its own unique TCP port. Each instance will run code
that connects to a backend database server to send queries that
> -Original Message-
> From: Berneburg, Cris J. - US
> Sent: Tuesday, June 29, 2021 7:16 AM
> To: users@tomcat.apache.org
> Subject: RE: 500 instances of tomcat on the same server
>
> Eric and Mark
>
> Just curious...
>
> Eric> We can run 75 to 125 instances of tomcat on a single Linux
Guido,
I think you intended that message for me, not Brian. Thanks much for the
feedback. I have been reading about Kubernetes, but I got discouraged when I
saw that they dropped Docker support, since Docker seems to be the most popular
containeriziation technology. Also, most of the
t be simple to be able to scale it to different clients like that.
> just my 2 cents.
>
Not simple, but predictable. We've been hosting it for over decade, and we have
a good feel for its resource utilization.
-Eric
> On Mon, Jun 28, 2021 at 1:12 PM Eric Robinson
> wrote:
>
> >
> -Original Message-
> From: Mark Thomas
> Sent: Monday, June 28, 2021 9:04 AM
> To: users@tomcat.apache.org
> Subject: Re: 500 instances of tomcat on the same server
>
> On 28/06/2021 14:53, Christopher Schultz wrote:
> > Eric,
> >
> > On 6/25
> -Original Message-
> From: Christopher Schultz
> Sent: Monday, June 28, 2021 8:54 AM
> To: users@tomcat.apache.org
> Subject: Re: 500 instances of tomcat on the same server
>
> Eric,
>
> On 6/25/21 22:58, Eric Robinson wrote:
> > We can run 75 to 12
> -Original Message-
> From: Shawn Heisey
> Sent: Saturday, June 26, 2021 8:09 PM
> To: users@tomcat.apache.org
> Subject: Re: 500 instances of tomcat on the same server
>
> On 6/25/2021 8:58 PM, Eric Robinson wrote:
> > We can run 75 to 125 instances of tomc
We can run 75 to 125 instances of tomcat on a single Linux server with 12 cores
and 128GB RAM. It works great. CPU is around 25%, our JVMs are not throwing
OOMEs, iowait is minimal, and network traffic is about 30Mbps. We're happy with
the results.
Now we're upping the ante. We have a 48-core
> -Original Message-
> From: Mark H. Wood
> Sent: Friday, June 25, 2021 12:30 PM
> To: users@tomcat.apache.org
> Subject: Re: Re-Use TCP Source Ports if the Socket is Unique?
>
> On Fri, Jun 25, 2021 at 12:46:03PM +, Eric Robinson wrote:
> > Olaf and Scot
> -Original Message-
> From: Christopher Schultz
> Sent: Friday, June 25, 2021 11:33 AM
> To: users@tomcat.apache.org
> Subject: Re: Re-Use TCP Source Ports if the Socket is Unique?
>
> Eric,
>
> On 6/24/21 21:14, Eric Robinson wrote:
> > I guess
> -Original Message-
> From: Olaf Kock
> Sent: Friday, June 25, 2021 8:07 AM
> To: users@tomcat.apache.org
> Subject: Re: Re-Use TCP Source Ports if the Socket is Unique?
>
>
> On 25.06.21 14:46, Eric Robinson wrote:
> > Olaf and Scott --
> >
> &g
that
the connector is configured to listen on.
> -Original Message-
> From: Olaf Kock
> Sent: Friday, June 25, 2021 3:01 AM
> To: users@tomcat.apache.org
> Subject: Re: Re-Use TCP Source Ports if the Socket is Unique?
>
>
> On 25.06.21 05:19, Eric Robinson wrote:
>
s if the Socket is Unique?
>
> Hi Eric,
>
> It should behave the same way. The socket client application will be assigned
> an ephemeral port.
>
> On Fri, Jun 25, 2021 at 9:14 AM Eric Robinson
> wrote:
>
> > I guess I may have answered this question for myself. At least I
connector that
tomcat uses.
> -Original Message-
> From: Eric Robinson
> Sent: Thursday, June 24, 2021 3:19 PM
> To: Tomcat Users List
> Subject: Re-Use TCP Source Ports if the Socket is Unique?
>
> Two quick questions.
>
> Question 1:
>
> When tomcat cre
Two quick questions.
Question 1:
When tomcat creates a TCP connection to a remote server (for example, a
back-end database) tomcat is acting as the TCP client in that case. Does it use
the IP it is listening on as the source IP for its outbound client connection?
For example, Server1 has
> On 3/17/21 15:35, Martin Grigorov wrote:
> > On Wed, Mar 17, 2021, 20:27 Eric Robinson
> wrote:
> >
> >>> From: Martin Grigorov
> >>> Sent: Wednesday, March 17, 2021 12:45 PM
> >>> To: Tomcat Users List
> >>> Subject: Re: W
> -Original Message-
> From: Martin Grigorov
> Sent: Wednesday, March 17, 2021 2:35 PM
> To: Tomcat Users List
> Subject: Re: Wait... NULL address in java.net.BindException: Address already
> in use (Bind failed) ???
>
> On Wed, Mar 17, 2021, 20:27 Eric Robinso
> From: Martin Grigorov
> Sent: Wednesday, March 17, 2021 12:45 PM
> To: Tomcat Users List
> Subject: Re: Wait... NULL address in java.net.BindException: Address already
> in use (Bind failed) ???
>
> Hi,
>
> On Wed, Mar 17, 2021, 19:34 Eric Robinson
&
Getting error:
java.net.BindException: Address already in use (Bind failed) :3787
I know how to fix the infamous "Address already in use (Bind failed)" problem
when there is another process already listening on a port. However, I have
confirmed with netstat and fuser that there is no other
> -Original Message-
> From: Christopher Schultz
> Sent: Wednesday, December 2, 2020 10:21 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> Mark,
>
> On 11/26/20 05:14, Mark Thomas wrote:
> > On 26/11/2020 04:57, Christopher Schultz wrote:
> >
> >
> >
>
> -Original Message-
> From: Mark Thomas
> Sent: Tuesday, November 24, 2020 8:57 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 24/11/2020 14:11, Christopher Schultz wrote:
> > On 11/20/20 11:08, Mark Thomas wrote:
>
>
>
> >> A second look at the
> -Original Message-
> From: Christopher Schultz
> Sent: Tuesday, November 24, 2020 8:11 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> Mark,
>
> On 11/20/20 11:08, Mark Thomas wrote:
> > On 20/11/2020 15:43, Eric Robins
> -Original Message-
> From: Mark Thomas
> Sent: Friday, November 20, 2020 9:32 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 20/11/2020 14:55, Eric Robinson wrote:
> >> From: Mark Thomas
> >> It looks
> -Original Message-
> From: Mark Thomas
> Sent: Friday, November 20, 2020 3:17 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 19/11/2020 16:03, Mark Thomas wrote:
> > On 19/11/2020 15:55, Eric Robinson wrote:
>
>
> From: Mark Thomas
> Sent: Thursday, November 19, 2020 4:34 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 18/11/2020 16:28, Mark Thomas wrote:
> > On 18/11/2020 15:41, Eric Robinson wrote:
>
>
>
> >>I tested
> -Original Message-
> From: Mark Thomas
> Sent: Wednesday, November 18, 2020 3:03 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 13/11/2020 23:46, Mark Thomas wrote:
> > Eric sent me a copy of the strace (thanks Eric) and while it is
> > consistent
, and there I was feeling ignored :-)
> >
> > That was the first thing I would have looked at. Is the OS reporting
> > errors to the JVM writing data or is the JVM not writing the data.
> > Strace will tell you this quite easily.
> >
> >
> > On Fri, Nov 13, 2020
> From: Thomas Meyer
> Sent: Friday, November 13, 2020 9:37 AM
> To: Tomcat Users List ; Mark Thomas
> ; users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
>
>
> Am 13. November 2020 10:06:18 MEZ schrieb Mark Thomas
> :
> >On 12/11/2020 14
> Kernel.
>
> Paul
Paul, this message went to spam and I just found it!
I will try this suggestion immediately.
-Eric
>
> On Fri, Oct 16, 2020 at 12:16 PM Mark Thomas wrote:
>
> > On 16/10/2020 10:05, Eric Robinson wrote:
> > > Hi Mark --
> > >
> -Original Message-
> From: Mark Thomas
> Sent: Friday, November 13, 2020 3:06 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 12/11/2020 14:19, Eric Robinson wrote:
> >> From: Mark Thomas
>
>
>
> >>
> -Original Message-
> From: Mark Thomas
> Sent: Thursday, November 12, 2020 4:08 AM
> To: Tomcat Users List ; Eric Robinson
>
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 11/11/2020 22:48, Eric Robinson wrote:
> >> -Original Message-
> -Original Message-
> From: Mark Thomas
> Sent: Monday, November 9, 2020 5:59 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> Eric,
>
> Time to prune the history and provide another summary I think. This
> summary isn't complete. There is more
> > -Original Message-
> > From: Stefan Mayr
> > Sent: Thursday, November 5, 2020 4:24 PM
> > To: users@tomcat.apache.org
> > Subject: Re: Weirdest Tomcat Behavior Ever?
> >
> > Am 03.11.2020 um 16:05 schrieb Eric Robinson:
> > >>
> -Original Message-
> From: Stefan Mayr
> Sent: Thursday, November 5, 2020 4:24 PM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> Am 03.11.2020 um 16:05 schrieb Eric Robinson:
> >> -Original Message-
> >>
> From: Mark Thomas
> Sent: Wednesday, November 4, 2020 11:39 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 03/11/2020 15:05, Eric Robinson wrote:
> >> From: Eric Robinson
> >>> From: Mark Thomas
>
>
> From: Christopher Schultz
> Sent: Tuesday, November 3, 2020 9:26 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> Eric,
>
> On 11/3/20 10:05, Eric Robinson wrote:
> >> -Original Message-
> >> From: Eric Robins
> -Original Message-
> From: Eric Robinson
> Sent: Tuesday, November 3, 2020 8:21 AM
> To: Tomcat Users List
> Subject: RE: Weirdest Tomcat Behavior Ever?
>
> > From: Mark Thomas
> > Sent: Tuesday, November 3, 2020 2:06 AM
> > To: Tomcat Users Li
> From: Mark Thomas
> Sent: Tuesday, November 3, 2020 2:06 AM
> To: Tomcat Users List
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 02/11/2020 12:16, Eric Robinson wrote:
>
>
>
> > Gotcha, thanks for the clarification. Let's see what happens when the us
> From: Mark Thomas
> Sent: Monday, November 2, 2020 5:38 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 02/11/2020 11:18, Eric Robinson wrote:
> >> -Original Message-
> >> From: Mark Thomas
> >
> -Original Message-
> From: Mark Thomas
> Sent: Sunday, November 1, 2020 11:50 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 01/11/2020 16:25, Mark Thomas wrote:
> >
> >
> > Keeping the previous logs for reference:
> >
> >>> Source Time
> -Original Message-
> From: Mark Thomas
> Sent: Thursday, October 29, 2020 5:45 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 28/10/2020 20:32, Mark Thomas wrote:
>
>
>
> > I have the off-list mail and will start looking at the logs shortly.
>
>
> From: Eric Robinson
> Sent: Tuesday, October 27, 2020 11:33 PM
> To: Tomcat Users List
> Subject: RE: Weirdest Tomcat Behavior Ever?
>
> > From: Mark Thomas
> > Sent: Tuesday, October 27, 2020 12:06 PM
> > To: users@tomcat.apache.org
> > Sub
> From: Mark Thomas
> Sent: Tuesday, October 27, 2020 12:06 PM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 27/10/2020 16:29, Eric Robinson wrote:
> >> On 27/10/2020 15:22, Eric Robinson wrote:
>
>
>
> >>&g
> On 27/10/2020 15:22, Eric Robinson wrote:
> >> On 27/10/2020 09:16, Mark Thomas wrote:
> >>> On 27/10/2020 04:43, Eric Robinson wrote:
> >>>
> >>>
> >>>
> >>>>>>>> Any changes in the Nginx configuration in t
> On 27/10/2020 09:16, Mark Thomas wrote:
> > On 27/10/2020 04:43, Eric Robinson wrote:
> >
> >
> >
> >>>>>> Any changes in the Nginx configuration in the relevant timescale?
> >>>>>>
> >>>>
> >>>&
> -Original Message-
> From: Eric Robinson
> Sent: Monday, October 26, 2020 11:37 PM
> To: Tomcat Users List
> Subject: RE: Weirdest Tomcat Behavior Ever?
>
> > > On 26/10/2020 10:26, Mark Thomas wrote:
> > > > O
> > On 26/10/2020 10:26, Mark Thomas wrote:
> > > On 24/10/2020 01:32, Eric Robinson wrote:
> > >
> > >
> > >
> > >>>> -Original Message-
> > >>>> From: Mark Thomas
> > >
> > >
> > >
> On 26/10/2020 10:26, Mark Thomas wrote:
> > On 24/10/2020 01:32, Eric Robinson wrote:
> >
> >
> >
> >>>> -Original Message-
> >>>> From: Mark Thomas
> >
> >
> >
> >>>> The failed request:
> -Original Message-
> From: Eric Robinson
> Sent: Friday, October 23, 2020 7:09 PM
> To: Tomcat Users List
> Subject: RE: Weirdest Tomcat Behavior Ever?
>
> Hi Mark --
>
> Thanks tons for digging into this. See my answers below.
>
> > -Origina
Hi Mark --
Thanks tons for digging into this. See my answers below.
> -Original Message-
> From: Mark Thomas
> Sent: Friday, October 23, 2020 5:09 PM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> Hi Eric (and those following along),
>
> Eric sent me
> -Original Message-
> From: Mark Thomas
> Sent: Friday, October 16, 2020 8:02 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 16/10/2020 12:37, Eric Robinson wrote:
> >> From: Mark Thomas
>
>
>
> >> I
> -Original Message-
> From: Mark Thomas
> Sent: Friday, October 16, 2020 5:17 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 16/10/2020 10:05, Eric Robinson wrote:
> > Hi Mark --
> >
> > Those
> > 6. What timeouts are configured for the Connector?
> >
>
> Sorry, which connector are you referring to?
>
Sorry, I'm a dummy. Obviously you mean the tomcat connector.
connectionTimeout="2"
-Eric
Disclaimer : This email and any files transmitted with it are confidential and
intended
Hi Mark --
Those are great questions. See answers below.
> -Original Message-
> From: Mark Thomas
> Sent: Friday, October 16, 2020 2:20 AM
> To: users@tomcat.apache.org
> Subject: Re: Weirdest Tomcat Behavior Ever?
>
> On 16/10/2020 00:27
Has anyone ever seen a situation where tomcat occasionally fails to send
responses but still logs them?
On a CentOS 7.5 server running in Azure with tomcat 7.0.76 with java 1.0.0_221,
everything runs fine 99.99% of the time, but that last hundredth of a percent
is a bitch. However,
On Sat, Sep 12, 2020, 02:57 Eric Robinson
> wrote:
>
> > I'm not sure what you mean by measuring at the load balancer level.
> > We're using the jasper logs and those only exist on the tomcat server
> > itself. I must be misunderstanding your meaning.
> >
>
> He mean
chultz
Sent: Thursday, September 10, 2020 3:11:43 PM
To: users@tomcat.apache.org
Subject: Re: Tomcat Processing Timer Question
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
Eric,
On 9/10/20 15:29, Eric Robinson wrote:
> Chris --
>
>
>> You should also look at worker-thread avail
n
>
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Eric,
>
> On 9/9/20 20:42, Eric Robinson wrote:
> > Hi Chris --
> >
> >> Are you have any specific problem you are trying to diagnose or fix?
> >> Or are you just academically interested in
al Message-
> From: Christopher Schultz
> Sent: Wednesday, September 9, 2020 7:41 AM
> To: users@tomcat.apache.org
> Subject: Re: Tomcat Processing Timer Question
>
> -BEGIN PGP SIGNED MESSAGE-
> Hash: SHA256
>
> Eric,
>
> On 9/8/20 17:29, Eric Robinson
0 4:05 PM
> To: users@tomcat.apache.org
> Subject: Re: Tomcat Processing Timer Question
>
> On 08/09/2020 21:46, Eric Robinson wrote:
> > Hi Mark --
> >
> > "If the request is split across multiple packets the timer starts when
> > Tomcat
> reads the first byte o
> Sent: Tuesday, September 8, 2020 3:34 PM
> To: users@tomcat.apache.org
> Subject: Re: Tomcat Processing Timer Question
>
> On 08/09/2020 21:19, Eric Robinson wrote:
> > Hi Mark and Christopher,
> >
> > For clarification, suppose a client sends and HTTP POST request whi
E-
> Hash: SHA256
>
> Eric,
>
> On 9/8/20 13:46, Eric Robinson wrote:
> > It is my understanding that the AccessLogValve %D field records the
> > time from when the last byte of the client's request is received to
> > when the last byte of the server's response is pla
It is my understanding that the AccessLogValve %D field records the time from
when the last byte of the client's request is received to when the last byte of
the server's response is placed on the wire. Is that correct? If so, would TCP
retransmissions impact the timer? If there are
> -Original Message-
> From: André Warnier (tomcat/perl)
> Sent: Saturday, March 28, 2020 5:35 PM
> To: users@tomcat.apache.org
> Subject: Re: Does Tomcat/Java get around the problem of 64K maximum
> client source ports?
>
> On 27.03.2020 21:39, Eric Robinson wrot
erl) wrote:
> > On 27.03.2020 14:27, André Warnier (tomcat/perl) wrote:
> >> On 26.03.2020 20:42, Eric Robinson wrote:
> >>>> -Original Message- From: Olaf Kock
> >>>> Sent: Thursday, March 26, 2020 2:06 PM
> >>>> To: users@tomc
> -Original Message-
> From: Olaf Kock
> Sent: Thursday, March 26, 2020 2:06 PM
> To: users@tomcat.apache.org
> Subject: Re: Does Tomcat/Java get around the problem of 64K maximum
> client source ports?
>
> Hi Eric,
>
> On 26.03.20 18:58, Eric Robinson wrot
Original Message-
From: André Warnier (tomcat)
Sent: Thursday, August 8, 2019 3:53 PM
To: users@tomcat.apache.org
Subject: Re: Tomcat Server Using 100% CPU
On 08.08.2019 20:08, Eric Robinson wrote:
> Utkarsh and John, thank you for your feedback.
>
> Since everything was originally on
> persist? Is it only at startup or does it randomly start after some uptime?
> Have your webapps or dependencies changed around the time the issue
> started? Do the working and nonworking servers run the same webapps
> with the same workload?
>
> On Thu, Aug 8, 2019 at 2:09 PM Eric Ro
and nonworking servers run the same webapps with the same workload?
On Thu, Aug 8, 2019 at 2:09 PM Eric Robinson
wrote:
> Utkarsh and John, thank you for your feedback.
>
> Since everything was originally on Windows, and we built a new Linux
> server with fresh tomcat installs, and the only th
On 08.08.2019 20:08, Eric Robinson wrote:
> Utkarsh and John, thank you for your feedback.
>
> Since everything was originally on Windows, and we built a new Linux server
> with fresh tomcat installs, and the only thing we moved over from the old
> Windows servers was the tomcat applicatio
List
Subject: Re: Tomcat Server Using 100% CPU
Did you reviewed the localhost_access log file. Which web-application is using
tomcat the most ?
On Thu, Aug 8, 2019 at 9:53 AM Eric Robinson
wrote:
> We have a farm of VMs, each running multiple instances of tomcat (up
> to 80 instances per
We have a farm of VMs, each running multiple instances of tomcat (up to 80
instances per server). Everything has been running fine for years, but recently
one server has started nailing the CPU to 100% utilization.
We have tried:
* Different versions of tomcat and JDK
* Doubling the
We have users in AD domain “Billing” who need to run a tomcat application from
a server that is in domain “BackOffice.”
Is it possible for a user in the Billing domain to login to the tomcat
application in the BackOffice domain without having to re-authenticate?
--Eric
> > More heap or more native memory?
> >
>
> With the exact same Xms and Xmx settings, I get vastly different resident and
> virtual image sizes from the Linux ps command.
>
>
> tomcatA: jdk1.8.0_152, res: 694312, virt: 5045084
> tomcatB: jdk1.6.0_21, res: 332840, virt:
> Eric,
>
> Just curious how much ram do you have in the server and cpu resources.
>
> #free -m and # cat /proc/cpuinfo | egrep 'cores|processor'
>
> (Not to insult your intelligence , I am just specifying what I was curious to
> see)
>
> And it's always easier to copy/paste than to think.
>
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