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Huge Buffer misses, automatic tune command?

Hello,

Our 2811 WAN router is experiencing a high volume for huge buffer misses with some failures. Should we look into the automatic buffer tuning command as our IOS supports it. Does the router need to be reloaded after? Has anyone exeprienced any issues with this command or having traffic dropped (even bliped)? Any suggestions?

This HourToday
Out-Of-Memory Errors0 misses 0 misses
Small Buffer Misses0 misses 80 misses
Medium Buffer Misses0 misses 15 misses
Big Buffer Misses0 misses 0 misses
Large Buffer Misses0 misses 0 misses
Huge Buffer Misses12745 misses 110224 misses

Buffer elements:
     1118 in free list (1119 max allowed)
     1277770169 hits, 0 misses, 619 created

Public buffer pools:
Small buffers, 104 bytes (total 64, permanent 50, peak 278 @ 7w0d):
     56 in free list (20 min, 150 max allowed)
     660245427 hits, 6248 misses, 4798 trims, 4812 created
     1908 failures (0 no memory)
Middle buffers, 600 bytes (total 25, permanent 25, peak 67 @ 7w0d):
     23 in free list (10 min, 150 max allowed)
     12076569 hits, 2167 misses, 927 trims, 927 created
     1290 failures (0 no memory)
Big buffers, 1536 bytes (total 50, permanent 50, peak 77 @ 4w1d):
     49 in free list (5 min, 150 max allowed)
     624745839 hits, 352 misses, 70 trims, 70 created
     308 failures (0 no memory)
VeryBig buffers, 4520 bytes (total 10, permanent 10, peak 14 @ 4w1d):
     10 in free list (0 min, 100 max allowed)
     55 hits, 253 misses, 8 trims, 8 created
     253 failures (0 no memory)
Large buffers, 5024 bytes (total 1, permanent 0, peak 5 @ 4w1d):
     1 in free list (0 min, 10 max allowed)
     10 hits, 243 misses, 807 trims, 808 created
     243 failures (0 no memory)
Huge buffers, 18024 bytes (total 12, permanent 0, peak 54 @ 6d03h):
     3 in free list (0 min, 4 max allowed)
     590650886 hits, 26298621 misses, 52631443 trims, 52631455 created
     226 failures (0 no memory)

Interface buffer pools:
Syslog ED Pool buffers, 600 bytes (total 150, permanent 150):
     118 in free list (150 min, 150 max allowed)
     17117 hits, 0 misses
CD2430 I/O buffers, 1536 bytes (total 0, permanent 0):
     0 in free list (0 min, 0 max allowed)
     0 hits, 0 fallbacks
IPC buffers, 4096 bytes (total 2, permanent 2):
     2 in free list (1 min, 8 max allowed)
     0 hits, 0 fallbacks, 0 trims, 0 created
     0 failures (0 no memory)

Header pools:
Header buffers, 0 bytes (total 768, permanent 768):
     256 in free list (128 min, 1024 max allowed)
     512 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
     512 max cache size, 512 in cache
     991869 hits in cache, 0 misses in cache
         
Particle Clones:
     1024 clones, 55893217 hits, 0 misses

Public particle pools:
F/S buffers, 256 bytes (total 768, permanent 768):
     256 in free list (128 min, 1024 max allowed)
     512 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)
     512 max cache size, 512 in cache
     55893217 hits in cache, 0 misses in cache
Normal buffers, 1548 bytes (total 768, permanent 768):
     704 in free list (128 min, 1024 max allowed)
     68 hits, 0 misses, 0 trims, 0 created
     0 failures (0 no memory)

Private particle pools:
IDS SM buffers, 240 bytes (total 128, permanent 128):
     0 in free list (0 min, 128 max allowed)
     128 hits, 0 fallbacks
     128 max cache size, 128 in cache
     0 hits in cache, 0 misses in cache
FastEthernet0/0 buffers, 1536 bytes (total 192, permanent 192):
     0 in free list (0 min, 192 max allowed)
     192 hits, 4 fallbacks
     192 max cache size, 128 in cache
     2109093862 hits in cache, 4 misses in cache
FastEthernet0/1 buffers, 1536 bytes (total 192, permanent 192):
     0 in free list (0 min, 192 max allowed)
     192 hits, 0 fallbacks
     192 max cache size, 128 in cache
     1152955222 hits in cache, 0 misses in cache
Serial0/1/0:0 buffers, 1536 bytes (total 64, permanent 64):
     0 in free list (0 min, 64 max allowed)
     64 hits, 0 fallbacks
     64 max cache size, 32 in cache
     32 hits in cache, 0 misses in cache
FastEthernet0/0/0 buffers, 1548 bytes (total 128, permanent 128):
     0 in free list (0 min, 128 max allowed)
     128 hits, 64 fallbacks
     128 max cache size, 128 in cache
     0 hits in cache, 0 misses in cache
NETGX_CACHE_BUFFERS buffers, 1700 bytes (total 256, permanent 256):
     0 in free list (0 min, 256 max allowed)
     256 hits, 0 fallbacks
     256 max cache size, 256 in cache
     0 hits in cache, 0 misses in cache

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Huge Buffer misses, automatic tune command?

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Posting

I've used autotune, and don't recall seeing any adverse effects.  You don't need to reload the router.  It will compile buffer usage and then modify buffer settings.

In your case, since your huge buffer is showing all the activity, you might just manually tune it to decrease its churn.