Hello Roland! Here is a small patch of ehca's Kconfig that activates scaling code as default. After several measurements we saw that this feature prevents drop packets (UD) in stress situation. Thus, enabling it helps to improve ehca's bandwidth through ipoib. Thanks! Nam
Signed-off-by: Hoang-Nam Nguyen <[EMAIL PROTECTED]> --- Kconfig | 1 + 1 files changed, 1 insertion(+) diff --git a/drivers/infiniband/hw/ehca/Kconfig b/drivers/infiniband/hw/ehca/Kconfig index 922389b..727b10d 100644 --- a/drivers/infiniband/hw/ehca/Kconfig +++ b/drivers/infiniband/hw/ehca/Kconfig @@ -10,6 +10,7 @@ config INFINIBAND_EHCA config INFINIBAND_EHCA_SCALING bool "Scaling support (EXPERIMENTAL)" depends on IBMEBUS && INFINIBAND_EHCA && HOTPLUG_CPU && EXPERIMENTAL + default y ---help--- eHCA scaling support schedules the CQ callbacks to different CPUs.
diff --git a/drivers/infiniband/hw/ehca/Kconfig b/drivers/infiniband/hw/ehca/Kconfig index 922389b..727b10d 100644 --- a/drivers/infiniband/hw/ehca/Kconfig +++ b/drivers/infiniband/hw/ehca/Kconfig @@ -10,6 +10,7 @@ config INFINIBAND_EHCA config INFINIBAND_EHCA_SCALING bool "Scaling support (EXPERIMENTAL)" depends on IBMEBUS && INFINIBAND_EHCA && HOTPLUG_CPU && EXPERIMENTAL + default y ---help--- eHCA scaling support schedules the CQ callbacks to different CPUs.
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