On 12/14/2015 07:11 AM, Jitendra Bhivare wrote:
From: Jitendra <jitendra.bhivare@xxxxxxxxxxxxx> OS not responding when running 2 port traffic on 72 CPUs system. be2iscsi IRQs gets affined to CPU0 when irqbalancer is disabled. be_iopoll processing completions in BLOCK_IOPOLL_SOFTIRQ hogged CPU0. 1. Use budget to exit the polling loop in beiscsi_process_cq. 2. Rearming of EQ is done only after iopoll completes. Signed-off-by: Jitendra <jitendra.bhivare@xxxxxxxxxxxxx> --- drivers/scsi/be2iscsi/be_cmds.c | 2 +- drivers/scsi/be2iscsi/be_iscsi.c | 2 +- drivers/scsi/be2iscsi/be_main.c | 91 +++++++++++++++++++++----------------- drivers/scsi/be2iscsi/be_main.h | 5 +- 4 files changed, 56 insertions(+), 44 deletions(-)
Hmm. Not sure if I agree with this. Doesn't the be2iscsi driver set the cpu affinity internally? If not, wouldn't that be the better solution? Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) -- 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
