Opened 9 years ago
Closed 5 years ago
#871 closed enhancement (invalid)
Memory leak in directio mode
| Reported by: | Owned by: | ||
|---|---|---|---|
| Priority: | minor | Milestone: | |
| Component: | nginx-core | Version: | 1.9.x |
| Keywords: | Cc: | ||
| uname -a: | Linux upl 3.19.0-42-generic #48-Ubuntu SMP Thu Dec 17 22:54:45 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux | ||
| nginx -V: |
nginx version: nginx/1.8.0
built with OpenSSL 1.0.1f 6 Jan 2014 TLS SNI support enabled configure arguments: --with-cc-opt='-g -O2 -fPIE -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2' --with-ld-opt='-Wl,-Bsymbolic-functions -fPIE -pie -Wl,-z,relro -Wl,-z,now' --prefix=/usr/share/nginx --conf-path=/etc/nginx/nginx.conf --http-log-path=/var/log/nginx/access.log --error-log-path=/var/log/nginx/error.log --lock-path=/var/lock/nginx.lock --pid-path=/run/nginx.pid --http-client-body-temp-path=/var/lib/nginx/body --http-fastcgi-temp-path=/var/lib/nginx/fastcgi --http-proxy-temp-path=/var/lib/nginx/proxy --http-scgi-temp-path=/var/lib/nginx/scgi --http-uwsgi-temp-path=/var/lib/nginx/uwsgi --with-debug --with-pcre-jit --with-ipv6 --with-http_ssl_module --with-http_stub_status_module --with-http_realip_module --with-http_auth_request_module --with-file-aio --with-http_geoip_module --with-http_geoip_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_spdy_module --with-http_sub_module --with-http_xslt_module --add-module=/dat2/src/nginx-debian/nginx-1.8.0/debian/modules/nginx-auth-pam --add-module=/dat2/src/nginx-debian/nginx-1.8.0/debian/modules/nginx-echo --add-module=/dat2/src/nginx-debian/nginx-1.8.0/debian/modules/nginx-upstream-fair --add-module=/dat2/src/nginx-debian/nginx-1.8.0/debian/modules/nginx-rtmp-module --add-module=/dat2/src/nginx-debian/nginx-1.8.0/debian/modules/nginx-vod-module --add-module=/dat2/src/nginx-debian/nginx-1.8.0/debian/modules/nginx-mp4mux-module |
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Description
Our module assembles large files from small fragments of other files. As result, very large count of temporary buffers are allocated with ngx_output_chain_align_file_buf when directio is on. These buffers remain in memory until request pool is destroyed. Why reusable buffers can't be used for this purpose?
Change History (3)
comment:1 by , 9 years ago
comment:2 by , 9 years ago
| Component: | documentation → nginx-core |
|---|---|
| Type: | defect → enhancement |
Alignment buffers are not reused as they are not expected to be needed many times. Normally, at most one alignment buffer will be enough.
If it's a problem for your module - feel free to suggest improvements, see http://nginx.org/en/docs/contributing_changes.html for some hints.
Note well that it's not a memory leak - all buffers are freed when request terminates, they are not leaked.
comment:3 by , 5 years ago
| Resolution: | → invalid |
|---|---|
| Status: | new → closed |
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Component should be changed to nginx-core