Hello, guys.
As I also have two seagate drives and siimage controller, I spent
some time tinkering with those, and the benchmark result looks okay.
I'll tidy up the patch and post it tomorrow or the day after tomorrow.
The patch makes sata_sil driver report normal max_sectors and loops
over write requests longer than 15 sectors inside sata driver.
Currently codes are sort of spread over libata core driver but I think
I can clean things up such that it uses only two additional hooks (One
will be on the issue path and the other on the completion path. Will
it be okay, Jeff?). So, don't go out and buy another controller just
yet. :-)
Per-char results on P3 800 are capped by cpu.
libata-dev-2.6 original P3 800, Sii3112 rev 02, ST3120026AS
===============================================================================
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
itj.dyndns.org 2G 10025 94 15399 16 6087 9 10013 87 14753 13 218.1 1
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 762 99 +++++ +++ +++++ +++ 771 99 +++++ +++ 2893 100
libata-dev-2.6 patched: P3 800, Sii3112 rev 02, ST3120026AS
===============================================================================
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
itj.dyndns.org 2G 11176 98 30447 29 13527 15 12569 90 52059 30 225.6 1
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 811 99 +++++ +++ +++++ +++ 757 99 +++++ +++ 2807 99
Reference: A64 3000+, VT6420, ST3200822AS
===============================================================================
Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
htj.dyndns.org 2G 27375 58 30206 13 17009 6 31887 61 42512 6 210.6 0
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 2908 99 +++++ +++ +++++ +++ 3126 99 +++++ +++ 8861 99
--
tejun
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