- Forwarded message from Sherry Moore <[EMAIL PROTECTED]> -
Date: Mon, 5 Mar 2007 21:34:19 -0800
From: Sherry Moore <[EMAIL PROTECTED]>
To: Tom Lane <[EMAIL PROTECTED]>
Cc: Luke Lonergan <[EMAIL PROTECTED]>,
Mark Kirkwood <[EMAIL PROTECTED]>,
Pavan Deolasee <[EMAIL PROTECTE
On a 1P system system with 512K L2, it is more obvious why we shouldn't
bypass L2 for small reads:
The same readtest as my previous mail invoked as following:
./readtest -s working-set-size -f /platform/i86pc/boot_archive -n 100
With copyout_max_cached being 128K:
Working
set 16K 32
> With copyout_max_cached being 8K:
^^^
4K
> Working
> set 16K 32K 64K 128K256K512K1M 2M 128M
>
> Seconds 4.8
