Re: Performance issues - huge amount of AVC misses

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On 12/09/2015 08:15 AM, Michal Marciniszyn wrote:
Hi,

after increasing the cache, I do not see many reclaims, like couple of
them here and there. The cache size had to be increased to 2048 to get
ti this state.

# avcstat 15

     537645     537623         22         22         32         32
     942916     942912          4          4          0          0
     604466     604457          9          9          0          0
     451737     451730          7          7         16         16
     457669     457669          0          0          0          0
     519135     519133          2          2          0          0
     517288     517288          0          0          0          0
     380376     380376          0          0          0          0
     464272     464269          3          3          0          0
     531484     531482          2          2          0          0
    1422422    1422421          1          1          0          0
    1380932    1380932          0          0          0          0
     512999     512999          0          0          0          0


Is it ok if I get longest chain length 13 in hash stats (It was higher
in the beginning - 19, but got to 13 after 2 hours)?

I wouldn't worry about that; it's insignificant compared to the cost of an AVC miss.



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