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| author | Kim van der Riet <kpvdr@apache.org> | 2014-01-15 22:33:26 +0000 |
|---|---|---|
| committer | Kim van der Riet <kpvdr@apache.org> | 2014-01-15 22:33:26 +0000 |
| commit | 529e96771b64b4cd48ba35ea264b640aa23bb260 (patch) | |
| tree | 7f6e8d25a2eff29c79212b04063b7a8e73cf88e6 /cpp/src/qpid/linearstore/journal/JournalFile.cpp | |
| parent | 933c1e55c55edcd84756431790c04de113046afa (diff) | |
| download | qpid-python-529e96771b64b4cd48ba35ea264b640aa23bb260.tar.gz | |
QPID-5484 [linearstore] Poor performance relative to legacystore. Partial fix: The use of /dev/random exhausts the kernel's supply of non-deterministic random data, and calls to read from it block until enough is available. It has been determined that /dev/urandom is good enough for this use-case (Journal serial numbers), and does not suffer from blocking.
git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk/qpid@1558592 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'cpp/src/qpid/linearstore/journal/JournalFile.cpp')
| -rw-r--r-- | cpp/src/qpid/linearstore/journal/JournalFile.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/cpp/src/qpid/linearstore/journal/JournalFile.cpp b/cpp/src/qpid/linearstore/journal/JournalFile.cpp index 8f6a311a84..129a9145d0 100644 --- a/cpp/src/qpid/linearstore/journal/JournalFile.cpp +++ b/cpp/src/qpid/linearstore/journal/JournalFile.cpp @@ -279,7 +279,7 @@ const std::string JournalFile::getFileName() const { //static uint64_t JournalFile::getRandom64() { - int randomData = ::open("/dev/random", O_RDONLY); + int randomData = ::open("/dev/urandom", O_RDONLY); if (randomData < 0) { throw jexception(); // TODO: Complete exception details } |