TCMalloc（Thread-Caching Malloc）是google開發的開源工具gperftools中的一個成員，tcmalloc比glibc中的malloc記憶體分配效率要快，tcmalloc特別對多執行緒做了優化，很大程度提高了伺服器在高併發下的效能，從而降低了系統的負載。

tcmalloc屬於gperftools，安裝前提必須安裝libunwind（32位系統不需要安裝），libunwind庫為基於64位cpu和作業系統的程式提供了基本函式呼叫鏈和函式呼叫暫存器功能。

一、下載相關軟體包

官方下載地址：

https://github.com/gperftools/gperftools/releases/download/gperftools-2.7/gperftools-2.7.tar.gz

https://download-mirror.savannah.gnu.org/releases/libunwind/libunwind-1.2.tar.gz

本地下載地址：

http://down.whsir.com/downloads/gperftools-2.7.tar.gz

http://down.whsir.com/downloads/libunwind-1.2.tar.gz

cd /usr/local/src/ wget http://nginx.org/download/nginx-1.14.0.tar.gz wget http://down.whsir.com/downloads/gperftools-2.7.tar.gz wget http://down.whsir.com/downloads/libunwind-1.2.tar.gz

1234	cd/usr/local/src/wget http://nginx.org/download/nginx-1.14.0.tar.gzwget http://down.whsir.com/downloads/gperftools-2.7.tar.gzwget http://down.whsir.com/downloads/libunwind-1.2.tar.gz

二、安裝所需依賴

yum install gcc gcc-c++ pcre pcre-devel openssl openssl-devel zlib zlib-devel

1	yum install gcc gcc-c++pcre pcre-devel openssl openssl-devel zlib zlib-devel

三、建立nginx啟動使用者

useradd -s /bin/false -M www

1	useradd-s/bin/false-Mwww

四、解壓編譯安裝libunwind和gperftools

tar zxf libunwind-1.2.tar.gz cd libunwind-1.2 CFLAGS=-fPIC ./configure make CFLAGS=-fPIC make CFLAGS=-fPIC install cd .. tar zxf gperftools-2.7.tar.gz cd gperftools-2.7 ./configure make make install echo "/usr/local/lib" >> /etc/ld.so.conf ldconfig

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tar zxf libunwind-1.2.tar.gzcd libunwind-1.2CFLAGS=-fPIC./configuremake CFLAGS=-fPICmake CFLAGS=-fPIC installcd..tar zxf gperftools-2.7.tar.gzcd gperftools-2.7./configuremakemake installecho"/usr/local/lib">>/etc/ld.so.confldconfig

五、編譯nginx

編譯時要新增--with-google_perftools_module引數，我這裡使用的全新nginx編譯，如果已有編譯好的nginx，只需要執行前面第二步後單獨新增一個--with-google_perftools_module引數重新編譯即可

cd .. tar zxf nginx-1.14.0.tar.gz cd nginx-1.14.0 ./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_v2_module --with-http_gzip_static_module --with-http_sub_module --with-google_perftools_module make make install

123456

cd..tar zxf nginx-1.14.0.tar.gzcd nginx-1.14.0./configure--user=www--group=www--prefix=/usr/local/nginx--with-http_stub_status_module--with-http_ssl_module--with-http_v2_module--with-http_gzip_static_module--with-http_sub_module--with-google_perftools_modulemakemake install

設定個軟連線

ln -sv /usr/local/nginx/sbin/nginx /usr/local/sbin/

1	ln-sv/usr/local/nginx/sbin/nginx/usr/local/sbin/

設定systemctl

vi /usr/lib/systemd/system/nginx.service

1	vi/usr/lib/systemd/system/nginx.service

[Unit] Description=nginx After=network.target [Service] Type=forking PIDFile=/usr/local/nginx/logs/nginx.pid ExecStart=/usr/local/nginx/sbin/nginx ExecReload=/usr/local/nginx/sbin/nginx -s reload ExecStop=/usr/local/nginx/sbin/nginx -s stop PrivateTmp=true [Install] WantedBy=multi-user.target

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[Unit]Description=nginxAfter=network.target[Service]Type=forkingPIDFile=/usr/local/nginx/logs/nginx.pidExecStart=/usr/local/nginx/sbin/nginxExecReload=/usr/local/nginx/sbin/nginx-sreloadExecStop=/usr/local/nginx/sbin/nginx-sstopPrivateTmp=true[Install]WantedBy=multi-user.target

六、為gperftools建立一個執行緒目錄

mkdir /tmp/tcmalloc chmod 777 /tmp/tcmalloc/

12	mkdir/tmp/tcmallocchmod777/tmp/tcmalloc/

七、配置nginx.conf

在#pid logs/nginx.pid;下面增加一行

google_perftools_profiles /tmp/tcmalloc;

1	google_perftools_profiles/tmp/tcmalloc;

八、最後啟動nginx並驗證

nginx -t systemctl start nginx systemctl enable nginx

123	nginx-tsystemctl start nginxsystemctl enable nginx

lsof -n | grep tcmalloc nginx 16534 www 10w REG 0,37 0 80796 /tmp/tcmalloc.16534

12	lsof-n|grep tcmallocnginx16534www10wREG0,37080796/tmp/tcmalloc.16534

這裡看到有多少條記錄是根據nginx的worker_processes執行緒數來的

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