[Linux-HA] How many primitives, groups can I have

2013-11-11 Thread Michael Brookhuis
Hi, Is there a limit in the number of proimitives, etc you can have? What maximum number is recommended based on best-practices? Are 1500 to many? Thanks Mima ___ Linux-HA mailing list Linux-HA@lists.linux-ha.org

[Linux-HA] Antw: How many primitives, groups can I have

2013-11-11 Thread Ulrich Windl
Hi! I guess there is no direct limit for the number of primitives, but performance may depend on that number: Maybe O(1), mybe (O(n), hopefully not (On^2) or worse. Immediately I suspect the communication protocol (TOTEM) may run into problems if a lot of data is exchanged, probably even after

Re: [Linux-HA] How many primitives, groups can I have

2013-11-11 Thread Marcus Bointon
On 11 Nov 2013, at 13:57, Michael Brookhuis mimabr...@googlemail.com wrote: Is there a limit in the number of proimitives, etc you can have? What maximum number is recommended based on best-practices? Are 1500 to many? I think it depends on your transport layer. If you're using heartbeat I

Re: [Linux-HA] How many primitives, groups can I have

2013-11-11 Thread Digimer
On 11/11/13 07:57, Michael Brookhuis wrote: Hi, Is there a limit in the number of proimitives, etc you can have? What maximum number is recommended based on best-practices? Are 1500 to many? Thanks Mima The cib will be very large, so pushing changes to other nodes will take time

Re: [Linux-HA] How many primitives, groups can I have

2013-11-11 Thread Tom Parker
You will also have to be careful of the shared memory size between the nodes. I had issues with massive cibs. Setting some environment variables fixed the issue but the defaults are too small. From: Digimer Sent: Monday, November 11, 2013 10:24 AM To: General Linux-HA mailing list Reply To:

Re: [Linux-HA] How many primitives, groups can I have

2013-11-11 Thread Tom Parker
I have found my settings. I needed to set the following in /etc/sysconfig/pacemaker # Force use of a particular class of IPC connection # PCMK_ipc_type=shared-mem|socket|posix|sysv export PCMK_ipc_type=shared-mem # Specify an IPC buffer size in bytes # Useful when connecting to really big

Re: [Linux-HA] Antw: How many primitives, groups can I have

2013-11-11 Thread Andrew Beekhof
On 12 Nov 2013, at 12:01 am, Ulrich Windl ulrich.wi...@rz.uni-regensburg.de wrote: Hi! I guess there is no direct limit for the number of primitives, but performance may depend on that number: Maybe O(1), mybe (O(n), hopefully not (On^2) or worse. Immediately I suspect the communication