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comparison src/os/unix/ngx_files.c @ 7670:ccb5ff87ab3e

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Cache: introduced min_free cache clearing. Clearing cache based on free space left on a file system is expected to allow better disk utilization in some cases, notably when disk space might be also used for something other than nginx cache (including nginx own temporary files) and while loading cache (when cache size might be inaccurate for a while, effectively disabling max_size cache clearing). Based on a patch by Adam Bambuch.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 22 Jun 2020 18:03:00 +0300
parents 0a04e5e4c40b
children e88cdaa0f1ff
comparison
equal deleted inserted replaced
7669:52b34c3f89b4 7670:ccb5ff87ab3e
882 #endif 882 #endif
883 883
884 return (size_t) fs.f_bsize; 884 return (size_t) fs.f_bsize;
885 } 885 }
886 886
887
888 off_t
889 ngx_fs_available(u_char *name)
890 {
891 struct statfs fs;
892
893 if (statfs((char *) name, &fs) == -1) {
894 return NGX_MAX_OFF_T_VALUE;
895 }
896
897 return (off_t) fs.f_bavail * fs.f_bsize;
898 }
899
887 #elif (NGX_HAVE_STATVFS) 900 #elif (NGX_HAVE_STATVFS)
888 901
889 size_t 902 size_t
890 ngx_fs_bsize(u_char *name) 903 ngx_fs_bsize(u_char *name)
891 { 904 {
906 #endif 919 #endif
907 920
908 return (size_t) fs.f_frsize; 921 return (size_t) fs.f_frsize;
909 } 922 }
910 923
924
925 off_t
926 ngx_fs_available(u_char *name)
927 {
928 struct statvfs fs;
929
930 if (statvfs((char *) name, &fs) == -1) {
931 return NGX_MAX_OFF_T_VALUE;
932 }
933
934 return (off_t) fs.f_bavail * fs.f_frsize;
935 }
936
911 #else 937 #else
912 938
913 size_t 939 size_t
914 ngx_fs_bsize(u_char *name) 940 ngx_fs_bsize(u_char *name)
915 { 941 {
916 return 512; 942 return 512;
917 } 943 }
918 944
919 #endif 945
946 off_t
947 ngx_fs_available(u_char *name)
948 {
949 return NGX_MAX_OFF_T_VALUE;
950 }
951
952 #endif