Mailing-List: contact users-help@tomcat.apache.org; run by ezmlm
Precedence: bulk
Reply-To: "Tomcat Users List" <users@tomcat.apache.org>
Received-SPF: pass (athena.apache.org: local policy)
Content-Type: text/plain; charset=iso-8859-1
Mime-Version: 1.0 (Apple Message framework v1283)
Subject: Re: Tomcat vs IIS download speed - configuration suggestions?
From: Daniel Mikusa <dmikusa@vmware.com>
In-Reply-To: 
 <CAGYXfLOgKqo87yLCvyg4YMe0zwNtjDGev-dsOFHxn2kVuM-LnQ@mail.gmail.com>
Date: Thu, 10 Jan 2013 15:19:54 -0500
Content-Transfer-Encoding: quoted-printable
Message-Id: <CF66A800-8D07-4573-97D9-73341F6C9DD0@vmware.com>
References: 
 <CAGYXfLPc__Ku8BBFa4DhzCBE7YNpMNOhjNLKNEOoY7Ybk_8KYQ@mail.gmail.com>
 <50EED0D2.70703@verizon.net>
 <CAGYXfLOgKqo87yLCvyg4YMe0zwNtjDGev-dsOFHxn2kVuM-LnQ@mail.gmail.com>
To: "Tomcat Users List" <users@tomcat.apache.org>

On Jan 10, 2013, at 3:10 PM, Linoma DevTeam wrote:

> Thank you everyone for the responses/suggestions.
>=20
> I did ensure that those were the same during the tests, but had =
removed
> that from the server.xml before sending. Both servers had negotiated =
the
> equivalent of TLS_RSA_WITH_AES_128_CBC_SHA with the client during =
testing.
>=20
> Also, i've verified the JVM is in server mode, and I'm currently using
> 1.6.0_14.

This is pretty old, you might also try the latest 1.6.0_x release and/or =
the latest 17.0_x release.  Those could have some performance =
improvements which would narrow the gap.

Dan


>=20
> At times i can hit increased speeds of 10.8MB/s for IIS (about as fast =
as
> this server's network card can handle), with tomcat running close to =
7.8
> MB/s.  (I'm just thinking out loud here) Assuming this is a normal
> difference with tomcat running at 72% the speed of IIS, and if the =
system
> was congested to the point of slowing down the downloads from the =
servers,
> then I would expect tomcat to run at 2.5 MB/s if IIS was serving files =
at
> 3.5 MB/s.  It however looks like tomcat is serving data at a =
consistent 3.0
> MB/s slower than IIS (not percentage based), which is why i saw 350 =
KB/s
> against the 3.5 MB/s from IIS?
>=20
> Anyway, I will try the APR connector and let you know.  Thanks again =
for
> your comments!
>=20
> On Thu, Jan 10, 2013 at 8:31 AM, David kerber <dckerber@verizon.net> =
wrote:
>=20
>> On 1/10/2013 8:56 AM, Linoma DevTeam wrote:
>>=20
>>> Hi everyone,
>>>=20
>>> I'm running some comparison tests with tomcat 6.0.35 and IIS running =
in
>>> parallel on Windows Server 2008 R2.  Now I would expect Tomcat to be
>>> somewhat slower, given the extra JVM layer, but in some situations, =
i'm
>>> seeing differences that are tough to swallow.
>>>=20
>>=20
>> What JVM are you running under?  Is it running the client or server
>> version?  I've found huge performance improvements in some kind of
>> operations under a server JVM compared to client ones.
>>=20
>>=20
>> D
>>=20
>>=20
>>=20
>>> Downloads
>>> IIS         ~3.7 MB/s
>>> Tomcat  ~350 KB/s
>>>=20
>>> Test Details:
>>> I placed a ~500MB file in the document root of the web app on tomcat =
and
>>> set up an HTTPS connector.  Then I set up IIS with the same file and =
an
>>> HTTPS listener.  I configured the cipher suite in tomcat to be the =
same
>>> one
>>> that was negotiated between IIS and my Chrome browser.  Finally, I =
set the
>>> JVM max memory to 1024MB with a min of 900MB to reduce the impact of =
the
>>> GC
>>> and the memory allocation.
>>>=20
>>> I'm using HTTP/1.1 connectors with pretty standard configuration:
>>>=20
>>> <Server port=3D"9005" shutdown=3D"SHUTDOWN">
>>>=20
>>> <Service name=3D"admin">
>>> <Connector port=3D"9080" />
>>>=20
>>> <Connector port=3D"9443" protocol=3D"HTTP/1.1"
>>> SSLEnabled=3D"true" enableLookups=3D"false" =
disableUploadTimeout=3D"true"
>>> scheme=3D"https" secure=3D"true" clientAuth=3D"false" =
sslProtocol=3D"TLS"
>>> algorithm=3D"SunX509" keystoreFile=3D"C:\temp\sample_**keystore.jks"
>>> keystorePass=3D"password" keyAlias=3D"sample-key" keystoreType=3D"JKS"=

>>> truststoreFile=3D"C:\temp\**sample_truststore.jks"
>>> truststorePass=3D"password"
>>> truststoreType=3D"JKS" />
>>>=20
>>> <Engine name=3D"admin" defaultHost=3D"localhost">
>>> <Host name=3D"localhost" appBase=3D"webapps"
>>> errorReportValveClass=3D"com.**company.**CustomErrorReportValve">
>>> <Context path=3D"/sample" docBase=3D"C:\temp\application\**WebRoot"
>>> reloadable=3D"false">
>>> <Loader delegate=3D"true" />
>>> </Context>
>>> </Host>
>>> </Engine>
>>> </Service>
>>> </Server>
>>>=20
>>> So, I extend the question of, why would tomcat only be able to reach =
10%
>>> of
>>> the speed IIS is able to server when running parallel tests?  Any
>>> suggestions on configurations that I could adjust on Tomcat, the =
JVM, or
>>> operating system that improve that download speed?
>>>=20
>>> Thanks in advance!
>>>=20
>>>=20
>>=20
>> =
------------------------------**------------------------------**---------
>> To unsubscribe, e-mail: =
users-unsubscribe@tomcat.**apache.org<users-unsubscribe@tomcat.apache.org>=

>> For additional commands, e-mail: users-help@tomcat.apache.org
>>=20
>>=20

---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org