Actual ring memory is rounded up to pow of 2, instead /proc/net/pf_ring/info 
contains the original value.

Alfredo

On Jun 4, 2013, at 5:38 PM, frwa onto <[email protected]> wrote:

> Dear All,
>             We just cat into this file /proc/net/pf_ring/1774-eth0.1 below is 
> the results.
> 
> Bound Device(s)    : eth0
> Active             : 1
> Breed              : Non-DNA
> Sampling Rate      : 1
> Capture Direction  : RX+TX
> Socket Mode        : RX only
> Appl. Name         : pfcount
> IP Defragment      : No
> BPF Filtering      : Disabled
> # Sw Filt. Rules   : 0
> # Hw Filt. Rules   : 0
> Poll Pkt Watermark : 1
> Num Poll Calls     : 447484
> Channel Id Mask    : 0xFFFFFFFF
> Cluster Id         : 0
> Slot Version       : 15 [5.5.3]
> Min Num Slots      : 6368
> Bucket Len         : 128
> Slot Len           : 328 [bucket+header]
> Tot Memory         : 2097152
> Tot Packets        : 305059
> Tot Pkt Lost       : 0
> Tot Insert         : 305059
> Tot Read           : 305058
> Insert Offset      : 1672888
> Remove Offset      : 1672576
> TX: Send Ok        : 0
> TX: Send Errors    : 0
> Reflect: Fwd Ok    : 0
> Reflect: Fwd Errors: 0
> Num Free Slots     : 6367
> 
> What confuses is that the minimum ring show in the another command cat 
> /proc/net/pf_ring/info is 4096 but here it shows as 6368? Which is the right 
> values to look and how does this effect the overall packet capture efficiency?
> 
> Regards,
> Frwa.
> 
>  
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