Raise the max file open limit in sdcard
The default is 1024 files, and in some testing, the limit has been
hit. This raises the limit to 8192. Going higher starts to cause
performance issues (I started to notice that around 16K open files
in my testing) as sdcard does linear searches. If a higher max
is needed, then the sdcard daemon will need some optimizations.
Bug: 7442187
Change-Id: I7aba7f4556ed70651f36244294a6756f3d6b8963
diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 8d87ee9..bff6e67 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -28,6 +28,8 @@
#include <limits.h>
#include <ctype.h>
#include <pthread.h>
+#include <sys/time.h>
+#include <sys/resource.h>
#include <private/android_filesystem_config.h>
@@ -1305,6 +1307,7 @@
gid_t gid = 0;
int num_threads = DEFAULT_NUM_THREADS;
int i;
+ struct rlimit rlim;
for (i = 1; i < argc; i++) {
char* arg = argv[i];
@@ -1353,6 +1356,12 @@
return usage();
}
+ rlim.rlim_cur = 8192;
+ rlim.rlim_max = 8192;
+ if (setrlimit(RLIMIT_NOFILE, &rlim)) {
+ ERROR("Error setting RLIMIT_NOFILE, errno = %d\n", errno);
+ }
+
res = run(source_path, dest_path, uid, gid, num_threads);
return res < 0 ? 1 : 0;
}