Hi, we are using luks/dmycrypt to encrypt our pgdata volumes. On some standby/replication machines we see load peaks up to 15x of the primary server. If we remove the dmcrypt/luks and run it on a non-encrypted device this does not happen.
We have tried to analyze this but could not find where the load comes from. Using atop, pg_top we do not see any waits, not on cpu and not on I/O, just the higher load. We see this on KVM hosts and also on Hardware (HDD, SSD, RAID/Non-RAID) and also tried to set different powerprofiles in the BIOS. Do you have any idea here? I am happy to get any information you need to analyze this problem. Thanks, Dennis -- Dennis Schwan DBA Database Services 1&1 De-Mail GmbH | Brauerstraße 50 | 76135 Karlsruhe | Germany Phone: +49 721 91374-8738 E-Mail: dennis.sch...@1und1.de | Web: www.1und1.de Hauptsitz Montabaur, Amtsgericht Montabaur, HRB 23266 Geschäftsführer: Alexander Charles, Thomas Ludwig, Jan Oetjen, Sascha Vollmer Member of United Internet Diese E-Mail kann vertrauliche und/oder gesetzlich geschützte Informationen enthalten. Wenn Sie nicht der bestimmungsgemäße Adressat sind oder diese E-Mail irrtümlich erhalten haben, unterrichten Sie bitte den Absender und vernichten Sie diese E-Mail. Anderen als dem bestimmungsgemäßen Adressaten ist untersagt, diese E-Mail zu speichern, weiterzuleiten oder ihren Inhalt auf welche Weise auch immer zu verwenden. This e-mail may contain confidential and/or privileged information. If you are not the intended recipient of this e-mail, you are hereby notified that saving, distribution or use of the content of this e-mail in any way is prohibited. If you have received this e-mail in error, please notify the sender and delete the e-mail.
