[libvirt] [PATCH] virsh: remove unnecessary sleep for nodecpustats --percent

Viktor Mihajlovski mihajlov at linux.vnet.ibm.com
Fri Jul 13 10:25:30 UTC 2012


On 07/13/2012 11:32 AM, Michal Privoznik wrote:
> On 13.07.2012 09:50, Viktor Mihajlovski wrote:
>> Fix for a minor issue:
>> the sleep(1) statement was called twice,
>> effectively doubling the elapsed time
>> execution "virsh nodecpustats --percent".
>>
>> Signed-off-by: Viktor Mihajlovski<mihajlov at linux.vnet.ibm.com>
>> ---
>>   tools/virsh.c |   11 +++++------
>>   1 files changed, 5 insertions(+), 6 deletions(-)
>>
>> diff --git a/tools/virsh.c b/tools/virsh.c
>> index 01e7ce0..767e2fc 100644
>> --- a/tools/virsh.c
>> +++ b/tools/virsh.c
>> @@ -6840,8 +6840,10 @@ cmdNodeCpuStats(vshControl *ctl, const vshCmd *cmd)
>>       memset(cpu_stats, 0, sizeof(cpu_stats));
>>       params = vshCalloc(ctl, nparams, sizeof(*params));
>>
>> -    i = 0;
>> -    do {
>> +    for (i=0; i<2; i++) {
>
> We keep spaces around operators (except increment, decrement and unary minus). So this should be:
>     for (i = 0; i<  2; i++) {
> and so forth.
>
>> +        if (i>0)
>> +            sleep(1);
>> +
>>           if (virNodeGetCPUStats(ctl->conn, cpuNum, params,&nparams, 0) != 0) {
>>               vshError(ctl, "%s", _("Unable to get node cpu stats"));
>>               goto cleanup;
>> @@ -6866,10 +6868,7 @@ cmdNodeCpuStats(vshControl *ctl, const vshCmd *cmd)
>>
>>           if (flag_utilization || !flag_percent)
>>               break;
>> -
>> -        i++;
>> -        sleep(1);
>> -    } while (i<  2);
>> +    }
>>
>>       if (!flag_percent) {
>>           if (!flag_utilization) {
>>
>
> However, fixed, ACKed and pushed:
>
> diff --git a/tools/virsh.c b/tools/virsh.c
> index c103e24..f9fe4b1 100644
> --- a/tools/virsh.c
> +++ b/tools/virsh.c
> @@ -6840,8 +6840,8 @@ cmdNodeCpuStats(vshControl *ctl, const vshCmd *cmd)
>       memset(cpu_stats, 0, sizeof(cpu_stats));
>       params = vshCalloc(ctl, nparams, sizeof(*params));
>
> -    for (i=0; i<2; i++) {
> -        if (i>0)
> +    for (i = 0; i<  2; i++) {
> +        if (i>  0)
>               sleep(1);
>
>           if (virNodeGetCPUStats(ctl->conn, cpuNum, params,&nparams, 0) != 0) {
>
>
>
> Michal
>

Hi Michal,

thanks (once more) for fixing up my patch. The missing spaces escaped me 
when doing the up-front review, which is kind of embarrassing.

-- 

Mit freundlichen Grüßen/Kind Regards
    Viktor Mihajlovski

IBM Deutschland Research & Development GmbH
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Geschäftsführung: Dirk Wittkopp
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