ื“ื–ืฉืขืžืึทืœืึธืง 5.3.1

ื ืืš ื ืคึผื•ื™ื–ืข ืคื•ืŸ โ€‹โ€‹ื›ึผืžืขื˜ ืคื™ืจ ื™ืึธืจ (ื–ืข "ื“ื–ืฉืขืžืึทืœืึธืง ืึทืœืฅยป) ื“ื™ ืืจื•ื™ืกื’ืขื‘ื•ื ื’ ืคื•ืŸ 5.3.1 ืคื•ืŸ ื“ืขื ืึทืœืึธืงืึทื˜ืึธืจ ืื™ื– ืคืืจื’ืขืงื•ืžืขืŸ jemalloc โ€“ ืึทืŸ ืื™ืžืคึผืœืขืžืขื ื˜ืึทืฆื™ืข ืคึฟื•ืŸ malloc(3) ื•ื•ืึธืก ืฉื˜ืขืœื˜ ื“ืขื ื˜ืจืึธืคึผ ืื•ื™ืฃ ืคึฟืจืึทื’ืžืขื ื˜ืึทืฆื™ืขึพืคึผืจืขื•ื•ืขื ืฉืึทืŸ ืื•ืŸ ืฉื˜ื™ืฆืข ืคึฟืึทืจ ืกืงืึทืœื™ืจื‘ืึทืจืขืจ ืงืึธื ืงื•ืจืขื ืฅ.

ื“ื™ ื ื™ื™ืข ืื•ื™ืกื’ืื‘ืข ื›ื•ืœืœ ืื™ื‘ืขืจ 390 ืงืืžื™ื˜ืก ืžื™ื˜ ื‘ืึทื’ ืคื™ืงืกื™ื–, ื ื™ื™ืข ืคึฟืขื™ึดืงื™ื™ื˜ืŸ, ืคืึธืจืฉื˜ืขืœื•ื ื’ ืึธืคึผื˜ื™ืžื™ื–ืึทืฆื™ืขืก ืื•ืŸ ืคึผืึธืจื˜ืึทื‘ื™ืœื™ื˜ื™ ืคึฟืึทืจื‘ืขืกืขืจื•ื ื’ืขืŸ.

ื“ืขืจ ืคึผืจืึธื™ืขืงื˜ ืื™ื– ื’ืขืฉืจื™ื‘ืŸ ืื™ืŸ C ืื•ืŸ ืคืึทืจืฉืคึผืจื™ื™ื˜ ืื•ื ื˜ืขืจ ื“ืขืจ BSD ืœื™ืฆืขื ืฅ.

ื ื™ื• ืึทืคึผืขืจื˜ื•ื ืึทื˜ื™ื–:

  • pvalloc(3) ืฉื˜ื™ืฆืข.
  • ื˜ืึธืคึผืœ ืคืจื™ื™ ื“ืขื˜ืขืงื˜ืขื“ ืื™ืŸ ื“ื™ื‘ืึทื’ ื‘ื™ืœื“;
  • ืฆื•ื’ืขืœื™ื™ื’ื˜ ื“ื™ --enable-pageid ืงืืžืคื™ื™ืœ ืืคืฆื™ืข ืฆื• ืขืจืžืขื’ืœื™ื›ืŸ ืžืขืžืืจื™-ื’ืขืžืืคื˜ืข ืื ืื˜ืืฆื™ืข.
  • ืฆื•ื’ืขื’ืขื‘ืŸ ืจืึทื ื˜ื™ื™ื ืคึผืึทืจืึทืžืขื˜ืขืจ prof_bt_max ืฆื• ืงืึธื ื˜ืจืึธืœื™ืจืŸ ื“ื™ ืžืึทืงืกื™ืžื•ื ืกื˜ืขืง ื˜ื™ืคืงื™ื™ื˜ ืคึฟืึทืจ ืคึผืจืึธื•ืคื™ื™ืœื™ื ื’;
  • ืฆื•ื’ืขื’ืขื‘ืŸ ืงืึธืžืคึผื™ื™ืœ ืึธืคึผืฆื™ืข --enable-force-getenv ืฆื• ื ื•ืฆืŸ getenv ืึทื ืฉื˜ืึธื˜ secure_getenv;
  • ืฆื•ื’ืขื’ืขื‘ืŸ --disable-dss ืงืืžืคื™ื™ืœ ืืคืฆื™ืข ืฆื• ื“ื™ืืงื˜ื™ื•ื•ื™ื–ื™ืจืŸ ื“ื™ ื‘ืื ื™ืฅ ืคื•ืŸ sbrk(2);
  • ืฆื•ื’ืขื’ืขื‘ืŸ ืงืึธืžืคึผื™ื™ืœ ืึธืคึผืฆื™ืข tcache_ncached_max ืฆื• ืงืึธื ื˜ืจืึธืœื™ืจืŸ ื“ื™ ืฆืึธืœ ืคื•ืŸ ื–ืื›ืŸ ืื™ืŸ ื“ื™ ืคึฟืึธื“ืขื ืงืึทืฉ.
  • ืฆื•ื’ืขื’ืขื‘ืŸ ืจืึทื ื˜ื™ื™ื ืคึผืึทืจืึทืžืขื˜ืขืจ calloc_madvise_threshold ืฆื• ื‘ืึทืฉื˜ื™ืžืขืŸ ืฆื™ ื“ืขืจ ืงืขืจื ืขืœ ืึธื“ืขืจ ืžืขืžืกืขื˜ ื•ื•ืขืจื˜ ื’ืขื ื•ืฆื˜ ืฆื• ื ื•ืœ ืื•ื™ืกื ืขืžืขืŸ ืึทืœืึธืงื™ืจื˜ืข ื–ื›ึผืจื•ืŸ ื‘ืœืึทืงืก ื•ื•ืขืŸ ืžืขืŸ ืจื•ืคื˜ calloc;
  • ืฆื•ื’ืขื’ืขื‘ืŸ ื“ื™ --disable-user-config ืงืึธืžืคึผื™ืœ-ื˜ื™ื™ื ืึธืคึผืฆื™ืข ืฆื• ื“ื™ืึทืงื˜ื™ื•ื•ื™ืจืŸ ืœื™ื™ืขื ืขืŸ ืคื•ืŸ ืงืึธื ืคื™ื’ื•ืจืึทืฆื™ืขืก ืคื•ืŸ ื“ื™ /etc/malloc.conf ื˜ืขืงืข ืึธื“ืขืจ ืคื•ืŸ ื“ื™ MALLOC_CONF ืกื‘ื™ื‘ื” ื•ื•ืขืจื™ืึทื‘ืœ ื‘ื™ื™ ืจืึทื ื˜ื™ื™ื.
  • ืฆื•ื’ืขื’ืขื‘ืŸ ื“ืขื ืจืึทื ื˜ื™ื™ื ืคึผืึทืจืึทืžืขื˜ืขืจ disable_large_size_classes ืฆื• ืึทืงื˜ื™ื•ื•ื™ื–ื™ืจืŸ ื“ืขื ื ื™ื™ืขื ืึทืœื’ืขืจื™ื˜ื ืคึฟืึทืจ ืงืึทืœืงื•ืœืึทืฆื™ืข ืคึฟื•ืŸ ืคึฟืึทืจืึทืŸ ื’ืจื™ื™ืก, ื•ื•ืึธืก ืžื™ื ื™ืžื™ื–ื™ืจื˜ ื–ื›ึผืจื•ืŸ ืึธื•ื•ื•ืขืจื›ืขื“ ื•ื•ืขืŸ ืžืขืŸ ืึทืœืึธืงื™ืจื˜ ื’ืจื•ื™ืกืข ื–ื›ึผืจื•ืŸ ื‘ืœืึธืงืก, ื“.ื”. ืžื™ื˜ ืึท ื’ืจื™ื™ืก >= 4 * PAGE;
  • ืžืขืŸ ื”ืื˜ ืขืจืžืขื’ืœื™ื›ื˜ ื“ื™ ื ื•ืฆ ืคื•ืŸ process_madvise ืื•ืŸ ืฆื•ื’ืขื’ืขื‘ืŸ ื“ืขื ืจืึทื ื˜ื™ื™ื ืคึผืึทืจืึทืžืขื˜ืขืจ process_madvise_max_batch ืฆื• ืงืึธื ื˜ืจืึธืœื™ืจืŸ ื“ื™ ืžืึทืงืกื™ืžื•ื ืฆืึธืœ ืคื•ืŸ ื–ื›ึผืจื•ืŸ ื’ืขื’ื ื˜ืŸ ืื™ืŸ ื™ืขื“ืŸ madvise "ื‘ืึทื˜ืฉ";
  • mallctl ืื™ื ื˜ืขืจืคื™ื™ืกืขืก ืฆื•ื’ืขื’ืขื‘ืŸ:
    • ืึธืคึผื˜.ืคึผืจืึธืฃ_ื‘ื˜_ืžืึทืงืก;
    • ืืจืขื ืข.
    • thread.tcache.max ืฆื• ืขื ื“ืขืจืŸ ืื•ืŸ ื‘ืึทืงื•ืžืขืŸ ื“ื™ tcache_max ืคื•ืŸ ื“ื™ ืื™ืฆื˜ื™ืงืข ืคึฟืึธื“ืขื;
    • thread.tcache.ncached_max.write ืื•ืŸ thread.tcache.ncached_max.read_sizeclass ืฆื• ืขื ื“ืขืจืŸ ืื•ืŸ ื‘ืึทืงื•ืžืขืŸ ื“ื™ ncached_max ืคื•ืŸ ื“ืขื ืื™ืฆื˜ื™ืงืŸ ืคึฟืึธื“ืขื;
    • arenas.hugepage ืฆื• ืฆื•ืจื™ืงื’ืขื‘ืŸ ื“ื™ ื’ืขื ื•ืฆื˜ืข hugepage ื’ืจื™ื™ืก, ืื•ื™ืš ืขืงืกืคืืจื˜ื™ืจื˜ ืฆื• malloc ืกื˜ืื˜ื™ืกื˜ื™ืงืก;
    • approximate_stats.active ืฆื• ื‘ืึทืงื•ืžืขืŸ ืึทืŸ ืึทืคึผืจืึธืงืกื™ืžืึทื˜ื™ื•ื•ืŸ ื•ื•ืขืจื˜ ืคื•ืŸ ื“ืขืจ ืื™ืฆื˜ื™ืงืขืจ ืฆืึธืœ ืึทืงื˜ื™ื•ื•ืข ื‘ื™ื™ื˜ืก, ื•ื•ืึธืก ื–ืึธืœ ื ื™ืฉื˜ ืคืึทืจื’ืœื™ื›ืŸ ื•ื•ืขืจืŸ ืžื™ื˜ ืึทื ื“ืขืจืข ืฆื•ืจื™ืงื’ืขืงืจืึธื’ืขื ืข ืกื˜ืึทื˜ื™ืกื˜ื™ืง.
  • ืืกืืš ื‘ืึทื’ื– ื–ืขื ืขืŸ ืื•ื™ืš ื’ืขืคื™ืงืกื˜ ื’ืขื•ื•ืึธืจืŸ ืื•ืŸ ื“ื™ ื“ืึธืงื•ืžืขื ื˜ืึทืฆื™ืข ืื™ื– ืคึฟืึทืจื‘ืขืกืขืจื˜ ื’ืขื•ื•ืึธืจืŸ.

ืžืงื•ืจ: linux.org.ru

ืงื•ื™ืคืŸ ืคืึทืจืœืึธื–ืœืขืš ื”ืึธืกื˜ื™ื ื’ ืคึฟืึทืจ ื–ื™ื™ื˜ืœืขืš ืžื™ื˜ DDoS ืฉื•ืฅ, VPS VDS ืกืขืจื•ื•ืขืจืก ๐Ÿ”ฅ ืงื•ื™ืคื˜ ืคืึทืจืœืขืกืœืขื›ืข ื•ื•ืขื‘ื–ื™ื™ื˜ืœ ื”ืึธืกื˜ื™ื ื’ ืžื™ื˜ DDoS ืฉื•ืฅ, VPS VDS ืกืขืจื•ื•ืขืจืก | ProHoster