Re: gc buffer busy and rac testing
From: helter skelter <helterskelter_at_gmail.com>
Date: Thu, 08 Jan 2009 12:38:21 +0100
Message-ID: <gk4p0g$qae$2_at_mx1.internetia.pl>
helter skelter pisze:
> Hi,
>
> I'am testing 2 node RAC but I haven't got too much experince with this
> technology and I am little puzzled after test results.
> I used Swingemch (order_entry test) and when I ran this test on 2 nodes
> RAC performance is much lower then on only one node of this cluster.
>
> TPS
> 2 nodes - 324
> 1 node - 473
>
> TMP
> 2 nodes - 17571
> 1 node - 25272
>
> When I look at waits I see (2 node test) that 60% are "gc buffer busy".
> Isn't it too much ? any advices what more can I check?
>
> Tablespace is localy managed, with auto segment space management and
> system allocation type. Interconnect on dedicated 1GB ethernet. Oracle
> 10.2.0.4 (standard edition) on RHEL5 with asm.
>
> thakns
Date: Thu, 08 Jan 2009 12:38:21 +0100
Message-ID: <gk4p0g$qae$2_at_mx1.internetia.pl>
helter skelter pisze:
> Hi,
>
> I'am testing 2 node RAC but I haven't got too much experince with this
> technology and I am little puzzled after test results.
> I used Swingemch (order_entry test) and when I ran this test on 2 nodes
> RAC performance is much lower then on only one node of this cluster.
>
> TPS
> 2 nodes - 324
> 1 node - 473
>
> TMP
> 2 nodes - 17571
> 1 node - 25272
>
> When I look at waits I see (2 node test) that 60% are "gc buffer busy".
> Isn't it too much ? any advices what more can I check?
>
> Tablespace is localy managed, with auto segment space management and
> system allocation type. Interconnect on dedicated 1GB ethernet. Oracle
> 10.2.0.4 (standard edition) on RHEL5 with asm.
>
> thakns
*Swingbench - not "Swingemch" :) Received on Thu Jan 08 2009 - 05:38:21 CST