[dpdk-dev] examples/vhost: reduce number of hugepages needed

Message ID 1449749971-5422-1-git-send-email-bernard.iremonger@intel.com (mailing list archive)
State Superseded, archived
Headers

Commit Message

Iremonger, Bernard Dec. 10, 2015, 12:19 p.m. UTC
  Change MAX_QUEUES to 128 to reduce the number of hugepages required
by the vhost-switch program.

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
---
 examples/vhost/main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
  

Comments

Yuanhan Liu Dec. 10, 2015, 12:59 p.m. UTC | #1
On Thu, Dec 10, 2015 at 12:19:31PM +0000, Bernard Iremonger wrote:
> Change MAX_QUEUES to 128 to reduce the number of hugepages required
> by the vhost-switch program.
> 
> Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
> ---
>  examples/vhost/main.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/examples/vhost/main.c b/examples/vhost/main.c
> index b30f1bd..8fb0adb 100644
> --- a/examples/vhost/main.c
> +++ b/examples/vhost/main.c
> @@ -1,7 +1,7 @@
>  /*-
>   *   BSD LICENSE
>   *
> - *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> + *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
>   *   All rights reserved.
>   *
>   *   Redistribution and use in source and binary forms, with or without
> @@ -53,7 +53,8 @@
>  
>  #include "main.h"
>  
> -#define MAX_QUEUES 512
> +/* decrease MAX_QUEUES from 512 to reduce number of hugepages needed */

Minor nit: I would suggest to simply remove this comment, which might
be a bit confusing without the content (that 512 would let vhost-switch
fail to start if given memory is small).

Otherwise, this patch looks good to me.

Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>

Thanks.

	--yliu

> +#define MAX_QUEUES 128
>  
>  /* the maximum number of external ports supported */
>  #define MAX_SUP_PORTS 1
> -- 
> 2.6.3
  
Iremonger, Bernard Dec. 10, 2015, 1:26 p.m. UTC | #2
Hi Yuanhan,

<snip>

> >  /*-
> >   *   BSD LICENSE
> >   *
> > - *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > + *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
> >   *   All rights reserved.
> >   *
> >   *   Redistribution and use in source and binary forms, with or without
> > @@ -53,7 +53,8 @@
> >
> >  #include "main.h"
> >
> > -#define MAX_QUEUES 512
> > +/* decrease MAX_QUEUES from 512 to reduce number of hugepages
> needed
> > +*/
> 
> Minor nit: I would suggest to simply remove this comment, which might be a
> bit confusing without the content (that 512 would let vhost-switch fail to start
> if given memory is small).
> 
> Otherwise, this patch looks good to me.
> 
> Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
> 
> Thanks.
> 
> 	--yliu
> 
<snip>

I will remove the comment.
Can I keep your ack.

Regards,

Bernard.
  
Yuanhan Liu Dec. 10, 2015, 1:34 p.m. UTC | #3
On Thu, Dec 10, 2015 at 01:26:14PM +0000, Iremonger, Bernard wrote:
> Hi Yuanhan,
> 
> <snip>
> 
> > >  /*-
> > >   *   BSD LICENSE
> > >   *
> > > - *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > > + *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
> > >   *   All rights reserved.
> > >   *
> > >   *   Redistribution and use in source and binary forms, with or without
> > > @@ -53,7 +53,8 @@
> > >
> > >  #include "main.h"
> > >
> > > -#define MAX_QUEUES 512
> > > +/* decrease MAX_QUEUES from 512 to reduce number of hugepages
> > needed
> > > +*/
> > 
> > Minor nit: I would suggest to simply remove this comment, which might be a
> > bit confusing without the content (that 512 would let vhost-switch fail to start
> > if given memory is small).
> > 
> > Otherwise, this patch looks good to me.
> > 
> > Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
> > 
> > Thanks.
> > 
> > 	--yliu
> > 
> <snip>
> 
> I will remove the comment.
> Can I keep your ack.

Thanks and sure, you can always keep one's ACK if you just need fix
some minor nits when he has already given the ack.

	--yliu
  

Patch

diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index b30f1bd..8fb0adb 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -1,7 +1,7 @@ 
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
  *   All rights reserved.
  *
  *   Redistribution and use in source and binary forms, with or without
@@ -53,7 +53,8 @@ 
 
 #include "main.h"
 
-#define MAX_QUEUES 512
+/* decrease MAX_QUEUES from 512 to reduce number of hugepages needed */
+#define MAX_QUEUES 128
 
 /* the maximum number of external ports supported */
 #define MAX_SUP_PORTS 1