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Raise the max file open limit in sdcard

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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
This commit is contained in:
Ken Sumrall 2013-02-08 16:50:55 -08:00
parent 3d7790edf4
commit 2fd72cc221
1 changed files with 9 additions and 0 deletions
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9
sdcard/sdcard.c
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@ -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 @@ int main(int argc, char **argv)
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 @@ int main(int argc, char **argv)
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;
}