Displaying 3 results from an estimated 3 matches for "50usec".
2011 May 02
32
[PATCH] blkback: Fix block I/O latency issue
In blkback driver, after I/O requests are submitted to Dom-0 block I/O subsystem, blkback goes to ''sleep'' effectively without letting blkfront know about it (req_event isn''t set appropriately). Hence blkfront doesn''t notify blkback when it submits a new I/O thus delaying the ''dispatch'' of the new I/O to Dom-0 block I/O subsystem. The new I/O is
2014 Aug 10
7
[PATCH] vhost: Add polling mode
From: Razya Ladelsky <razya at il.ibm.com>
Date: Thu, 31 Jul 2014 09:47:20 +0300
Subject: [PATCH] vhost: Add polling mode
When vhost is waiting for buffers from the guest driver (e.g., more packets to
send in vhost-net's transmit queue), it normally goes to sleep and waits for the
guest to "kick" it. This kick involves a PIO in the guest, and therefore an exit
(and possibly
2014 Aug 10
7
[PATCH] vhost: Add polling mode
From: Razya Ladelsky <razya at il.ibm.com>
Date: Thu, 31 Jul 2014 09:47:20 +0300
Subject: [PATCH] vhost: Add polling mode
When vhost is waiting for buffers from the guest driver (e.g., more packets to
send in vhost-net's transmit queue), it normally goes to sleep and waits for the
guest to "kick" it. This kick involves a PIO in the guest, and therefore an exit
(and possibly