http://bugzilla.kernel.org/show_bug.cgi?id=10846 ------- Comment #8 from dom.lalot@xxxxxxxxx 2008-06-04 08:22 ------- Well, I don't know what to say as a conclusion. We checked on another machine (sata devices). We confirmed the difference between the kernels. I don't know the algorythum about the write caching, in fact we have seen a difference. If we stay under 80Mo, we stay in cache without effect from the write back or write through written in dmesg. 2.6.21 and above are OK. It you test for 600Mo, you get hardware speed on 2.6.22+ As a conclusion: I was not lucky in doing such a test on a new hardware. I believed it comes from SAS and finaly that's more a change in Memory Management. By the way, if somebody can tell me where we can tune the max memory cache in kernel, that would be great. Anyway, for our purpose, it's not usefull. Thanks Dominique Can you close the bug, or should I? -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
