Re: [Qemu-devel] [PATCH v15 8/9] Add set_cachesize command

[Orit Wasserman <owasserm@redhat.com>]

On 07/05/2012 05:14 PM, Eric Blake wrote:
> On 07/05/2012 06:51 AM, Orit Wasserman wrote:
>> Change XBZRLE cache size in bytes (the size should be a power of 2).
>> If XBZRLE cache size is too small there will be many cache miss.
>>
>> Signed-off-by: Benoit Hudzia <benoit.hudzia@sap.com>
>> Signed-off-by: Petter Svard <petters@cs.umu.se>
>> Signed-off-by: Aidan Shribman <aidan.shribman@sap.com>
>> Signed-off-by: Orit Wasserman <owasserm@redhat.com>
>> ---
> 
>> +    {
>> +        .name       = "migrate_set_cachesize",
>> +        .args_type  = "value:o",
>> +        .params     = "value",
>> +        .help       = "set cache size (in bytes) for XBZRLE migrations,"
>> +		      "the cache size will be rounded down to the nearest "
>> +                      "power of 2.\n"
>> +		      "The cache size effects the number of cache misses."
>> +		      "In case of a high cache miss ratio you need to increase the cache size",
> 
> Inconsistent indentation.  Kill those TABs.
> 
>> +++ b/migration.c
>> @@ -22,6 +22,7 @@
>>  #include "qemu_socket.h"
>>  #include "block-migration.h"
>>  #include "qmp-commands.h"
>> +#include <math.h>
> 
> Urgh.  You STILL haven't killed this bogus include, even though I've
> been mentioning it since my v12 review.  I'm really getting frustrated
> with how long this series is being dragged out.
Again I'm really sorry I will be more careful next time

Thanks,
Orit
> 
>>  
>>  //#define DEBUG_MIGRATION
>>  
>> @@ -43,7 +44,7 @@ enum {
>>  
>>  #define MAX_THROTTLE  (32 << 20)      /* Migration speed throttling */
>>  
>> -/* Migration XBZRLE cache size */
>> +/* Migration XBZRLE default cache size */
> 
> Again from my v12 review, this hunk should be squashed into the patch
> that first introduces the comment.
> 
>> +migrate_set_cachesize
>> +---------------------
>> +
>> +Set cache size to be used by XBZRLE migration, the cache size will be round down
>> +to the nearset power of 2
> 
> Another v12 review leftover:
> 
> s/nearset/nearest/
>