[boost] TSS performance problem

From: Arnstein Ressem (aressem_at_[hidden])
Date: 2008-04-23 16:53:19

I did a benchmark on RHEL 4 64-bit with gcc 3.4.5 and found a large difference in the performance of TSS. I have used the provided example with the following modification:

--- boost_1_35_0/libs/thread/example/tss.cpp.org        2008-04-23 22:40:50.000000000 +0200
+++ boost_1_35_0/libs/thread/example/tss.cpp    2008-04-23 22:44:51.000000000 +0200
@@ -21,3 +21,3 @@
     value.reset(new int(0)); // initialize the thread's storage
-    for (int i=0; i<10; ++i)
+    for (int i=0; i<100000000; ++i)
     {

Compiled and linked with boost 1.33.1:
$ time ./tss_1.33
real    0m7.734s
user    0m15.379s
sys     0m0.004s

Compiled and linked with boost 1.35.0:
$ time ./tss_1.35
real    0m21.074s
user    0m41.253s
sys     0m0.004s

The new version of boost uses almost three times as long to complete the example. Did anyone else experience the same problem ?

Regards,
Arnstein Ressem