Re: [PATCH] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)

2020-09-23 Thread Dr. David Alan Gilbert
* Laurent Vivier (lviv...@redhat.com) wrote: > max-bandwidth is set by default to 32 MiB/s (256 Mib/s) > since 2008 (5bb7910af031c). > > Most of the CPUs can dirty memory faster than that now, > and this is clearly a problem with POWER where the page > size is 64 kiB and not 4 KiB. > > Signed-off

Re: [PATCH] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)

2020-09-22 Thread Dr. David Alan Gilbert
* Laurent Vivier (lviv...@redhat.com) wrote: > max-bandwidth is set by default to 32 MiB/s (256 Mib/s) > since 2008 (5bb7910af031c). > > Most of the CPUs can dirty memory faster than that now, > and this is clearly a problem with POWER where the page > size is 64 kiB and not 4 KiB. > > Signed-off

Re: [PATCH] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)

2020-09-22 Thread Greg Kurz
On Mon, 21 Sep 2020 16:49:57 +0200 Laurent Vivier wrote: > max-bandwidth is set by default to 32 MiB/s (256 Mib/s) > since 2008 (5bb7910af031c). > > Most of the CPUs can dirty memory faster than that now, > and this is clearly a problem with POWER where the page > size is 64 kiB and not 4 KiB. >

Re: [PATCH] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)

2020-09-21 Thread David Gibson
On Mon, Sep 21, 2020 at 04:49:57PM +0200, Laurent Vivier wrote: > max-bandwidth is set by default to 32 MiB/s (256 Mib/s) > since 2008 (5bb7910af031c). > > Most of the CPUs can dirty memory faster than that now, > and this is clearly a problem with POWER where the page > size is 64 kiB and not 4 K

[PATCH] migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)

2020-09-21 Thread Laurent Vivier
max-bandwidth is set by default to 32 MiB/s (256 Mib/s) since 2008 (5bb7910af031c). Most of the CPUs can dirty memory faster than that now, and this is clearly a problem with POWER where the page size is 64 kiB and not 4 KiB. Signed-off-by: Laurent Vivier --- migration/migration.c | 2 +- 1 fil