Very Hight Virtual Memory Usage of the "Java"

Hello everyone,

When i run the cminfo top command, it says like that;

Code (Text):

top 10 processes' virtual memory size (VmSize/VSZ)
RSS vs VSZ https://stackoverflow.com/a/21049737/272648
RSS https://en.wikipedia.org/wiki/Resident_set_size

      6381 java                                    21260844 kB
      9210 mysqld                                  17189312 kB
     30651 redis-server                             5014880 kB
     28226 php-fpm                                  1494960 kB
     16321 php-fpm                                  1490740 kB
     31367 php-fpm                                  1461120 kB
     14280 php-fpm                                  1459772 kB
      7811 php-fpm                                  1459040 kB
     23194 php-fpm                                  1457488 kB
     18724 php-fpm                                  1319200 kB

I'm using the xenforo with elasticsearch (so xenforo enhanced search product) also using the redis cache features. But i worry and interested that java memory usage looks like very high, am i wrong?

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P.S: My webserver has about 64GB Ram and TOTAL 32 Core Intel CPU. Forum Total threads about 700K, 7M Post and db size about 13 GB) If java hurts my RAM, so i can switch to standart search feature on forum. Because, our users don't use the search function often.