On Mon, Aug 25, 2014 at 02:36:33PM +0200, Roland Friedwagner wrote: > Hello, > > blocking is a normal behavor when you replication link TCP queues > becomes full. > > You may increase the linux kernel defaults like this in /etc/sysctl.conf > net.core.rmem_default = 16777216 > net.core.wmem_default = 16777216 > net.core.rmem_max = 33554432 > net.core.wmem_max = 33554432 > net.ipv4.tcp_rmem = 131072 16777216 33554432 > net.ipv4.tcp_wmem = 131072 16777216 33554432
You do realize that the setting above is in units of Byte per socket, but the setting below: > net.ipv4.tcp_mem = 131072 16777216 33554432 This is in global *pages*, used by anything in the TCP stack. You really have 128 GiB of RAM to spend on your TCP stack alone?? That may well be (I've worked on systems with > 1 TiB RAM...) But it does not seem likely... Read: do not simply copy'n'paste from ubuntu-users forum or similar... Check what those settings do, and if the proposed setting is plausible! -- : Lars Ellenberg : LINBIT | Your Way to High Availability : DRBD/HA support and consulting http://www.linbit.com DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. __ please don't Cc me, but send to list -- I'm subscribed _______________________________________________ drbd-user mailing list drbd-user@lists.linbit.com http://lists.linbit.com/mailman/listinfo/drbd-user
