We could identify the issue. On the server we used an apache proxy to tomcat using mod_ajp to speed up SSL downloads. Switching to mod_jk solved the issue.
Sorry for posting to the wrong list. Ludwig > -----Original Message----- > From: owner-openssl-us...@openssl.org [mailto:owner-openssl-us...@openssl.org] On > Behalf Of Ludwig Groten > Sent: Tuesday, July 06, 2010 11:49 AM > To: openssl-users@openssl.org > Subject: Huge performance issues using SSL3 > > Hi list, > > In our application we use OpenSSL 0.9.8a in combination with libcurl (7.19.7) for > uploading files to a server. > > On different machines we see a huge performance issue when using SSL3. Using SSL2 > does not show this issue. > > From looking into the network traffic we do see a delayed ACK from the server for almost > every complete block of data we send. > > This does not happen when uploading the files by a standard web browser using SSL3. > > Setting the server registry key (ACK FREQUENCY) to 1 is no option. > > What can we do to get the same performance as with SSL2 ? > > Thanks for your help, > > Ludwig _____________________________________________________________________________ Realtime Technology Aktiengesellschaft, Munich, Germany Commercial Registry: 125910; Amtsgericht Muenchen Board: Ludwig A. Fuchs / Christoph Karrasch Chairman of the Supervisory Board: Prof. Dr. Ulrich Goehner Diese E-Mail enthaelt vertrauliche und/oder rechtlich geschuetzte Informationen. Wenn Sie nicht der richtige Adressat sind oder diese E-Mail irrtümlich erhalten haben, informieren Sie bitte sofort den Absender und vernichten Sie diese Mail. Das unerlaubte Kopieren sowie die unbefugte Weitergabe dieser Mail ist nicht gestattet. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient (or have received this e-mail in error) please notify the sender immediately and destroy this e-mail. Any unauthorized copying, disclosure or distribution of the material in this e-mail is strictly forbidden.______________________________________________________________________ OpenSSL Project http://www.openssl.org User Support Mailing List openssl-users@openssl.org Automated List Manager majord...@openssl.org
