On 11/03/2024 08:54, mengfanhui wrote:
By default, the host_tagset_enable feature is disabled，Fio performance
has improved significantly
fio test command:
sudo fio -filename=/fio_test -direct=1 -iodepth 32 -thread -rw=write -ioengine=libaio
-bs=4K -size=5120M -runtime=600 -numjobs=$CPUN -group_reporting -name=**.result >> **.result
The test data results bw are as follows：
v6.8_kernel v6.8_kernel_disable_host_tagset
4k randwrite 375 642
4k randread 210 784
4k write 306 387
4k read 435 2457
128k write 355 380
128k read 976 3665
1M read 415 3122
There are some huge differences in those numbers. Can you find out what
is going on?
Signed-off-by: mengfanhui <mengfanhui@xxxxxxxxxx>
---
drivers/scsi/megaraid/megaraid_sas_base.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index 3d4f13da1ae8..da19c4c07f2f 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -123,9 +123,9 @@ MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode
"High iops queues are not allocated &\n\t\t"
);
-int host_tagset_enable = 1;
+int host_tagset_enable;
module_param(host_tagset_enable, int, 0444);
-MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
+MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: disable(0)");
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
