d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

vhost: increase number of async IO vectors

Browse Source 
This patch increases the number of IO vectors for the
asynchronous data path from 512 to 2048. It has been
reported during testing the starvation of IO vectors
during iperf benchmark with 64KB packet size.

As there are no direct relationship between
VHOST_MAX_ASYNC_VEC and BUF_VECTOR_MAX, this patch also
assign VHOST_MAX_ASYNC_VEC value directly instead of being
a multiple of BUF_VECTOR_MAX.

Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Jiayu Hu <jiayu.hu@intel.com>
This commit is contained in:
Maxime Coquelin 2021-10-26 18:29:04 +02:00
parent 816a565bf3
commit 541053891a
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
lib/vhost/vhost.h
View File

@ -49,7 +49,7 @@
#define MAX_PKT_BURST 32
#define VHOST_MAX_ASYNC_IT (MAX_PKT_BURST)
#define VHOST_MAX_ASYNC_VEC (BUF_VECTOR_MAX * 2)
#define VHOST_MAX_ASYNC_VEC 2048
#define PACKED_DESC_ENQUEUE_USED_FLAG(w) \
((w) ? (VRING_DESC_F_AVAIL | VRING_DESC_F_USED | VRING_DESC_F_WRITE) : \