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| author | SeongJae Park <sjpark@amazon.de> | 2020-09-23 09:18:39 +0300 |
|---|---|---|
| committer | Boris Ostrovsky <boris.ostrovsky@oracle.com> | 2020-10-21 15:15:13 +0300 |
| commit | aac8a70db24bd3916b9ddce1761e500771356b6b (patch) | |
| tree | 8ee9b85e9dd2fdf536e0a0cc0e591dbbecc00774 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | 5f7f77400ab5b357b5fdb7122c3442239672186c (diff) | |
| download | linux-aac8a70db24bd3916b9ddce1761e500771356b6b.tar.xz | |
xen-blkback: add a parameter for disabling of persistent grants
Persistent grants feature provides high scalability. On some small
systems, however, it could incur data copy overheads[1] and thus it is
required to be disabled. But, there is no option to disable it. For
the reason, this commit adds a module parameter for disabling of the
feature.
[1] https://wiki.xen.org/wiki/Xen_4.3_Block_Protocol_Scalability
Signed-off-by: Anthony Liguori <aliguori@amazon.com>
Signed-off-by: SeongJae Park <sjpark@amazon.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Link: https://lore.kernel.org/r/20200923061841.20531-2-sjpark@amazon.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
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