импорт из репозиториев Perforce и отправка в них  (Import from and submit to Perforce repositories)
  
Представление (Performance)
The fast-import mechanism used by git p4 creates one pack file
       for each invocation of git p4 sync. Normally, Git garbage
       compression (git-gc(1)) automatically compresses these to fewer
       pack files, but explicit invocation of git repack -adf may
       improve performance.