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bgpd: Optimize memory usage for bgp_damp_config struct 

```
struct bgp_damp_config {
        unsigned int               suppress_value;       /*     0     4 */
        unsigned int               reuse_limit;          /*     4     4 */
        time_t                     max_suppress_time;    /*     8     8 */
        time_t                     half_life;            /*    16     8 */
        unsigned int               reuse_list_size;      /*    24     4 */
        unsigned int               reuse_index_size;     /*    28     4 */
        unsigned int               ceiling;              /*    32     4 */
        unsigned int               decay_rate_per_tick;  /*    36     4 */
        unsigned int               decay_array_size;     /*    40     4 */
        unsigned int               reuse_scale_factor;   /*    44     4 */
        double                     scale_factor;         /*    48     8 */
        double *                   decay_array;          /*    56     8 */
        /* --- cacheline 1 boundary (64 bytes) --- */
        int *                      reuse_index;          /*    64     8 */
        struct bgp_damp_info * *   reuse_list;           /*    72     8 */
        int                        reuse_offset;         /*    80     4 */
        safi_t                     safi;                 /*    84     4 */
        struct bgp_damp_info *     no_reuse_list;        /*    88     8 */
        struct event *             t_reuse;              /*    96     8 */
        afi_t                      afi;                  /*   104     4 */

        /* size: 112, cachelines: 2, members: 19 */
        /* padding: 4 */
        /* last cacheline: 48 bytes */
};   /* saved 8 bytes! */
```

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2024-01-29 16:21:21 +02:00
parent a699cc1796
commit 48856741bd
1 changed files with 2 additions and 2 deletions
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4
bgpd/bgp_damp.h
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@ -74,8 +74,8 @@ struct bgp_damp_config {
unsigned int ceiling; /* Max value a penalty can attain */
unsigned int decay_rate_per_tick; /* Calculated from half-life */
unsigned int decay_array_size; /* Calculated using config parameters */
double scale_factor;
unsigned int reuse_scale_factor;
double scale_factor;
/* Decay array per-set based. */
double *decay_array;
@ -86,6 +86,7 @@ struct bgp_damp_config {
/* Reuse list array per-set based. */
struct bgp_damp_info **reuse_list;
int reuse_offset;
safi_t safi;
/* All dampening information which is not on reuse list. */
struct bgp_damp_info *no_reuse_list;
@ -94,7 +95,6 @@ struct bgp_damp_config {
struct event *t_reuse;
afi_t afi;
safi_t safi;
};
#define BGP_DAMP_NONE 0