On Fri, Nov 2, 2012 at 3:06 AM, Jérémie GUILLAUME <jeremie.guillaume-prestataire@xxxxxxxxxxxxxxxxxxx> wrote: ... > with 3.2.x kernels > ------------------ > - no problem occurs ; we have good data transfers , even in 64 Gb High > Memory mode. Jeremie, The megaraid_sas driver changes from 3.2 kernel, version 6.12-rc1, to 3.3 kernel, version 6.14-rc1 are quite minimal and would not affect any 32-bit 64 GB memory mode/PAE mode. Feel free to copy the following files from your 3.2 kernel source into your 3.3 kernel source: drivers/scsi/megaraid/megaraid_sas_base.c megaraid_sas.h megaraid_sas_fusion.c megaraid_sas_fusion.h megaraid_sas_fp.c then rebuild your kernel and modules. That should help you determine if there was actually a megaraid_sas driver related performance regression, since you will have the exact same driver code running for both kernels. -Adam -- 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
