Valgrind内存不足

Question

这是我在valgrind崩溃并停止分析我的应用程序时收到的消息：

    ==16317== 
    ==16317==     Valgrind's memory management: out of memory:
    ==16317==        newSuperblock's request for 4194304 bytes failed.
    ==16317==        3013349376 bytes have already been allocated.
    ==16317==     Valgrind cannot continue.  Sorry.
    ==16317== 
    ==16317==     There are several possible reasons for this.
    ==16317==     - You have some kind of memory limit in place.  Look at the
    ==16317==       output of 'ulimit -a'.  Is there a limit on the size of
    ==16317==       virtual memory or address space?
    ==16317==     - You have run out of swap space.
    ==16317==     - Valgrind has a bug.  If you think this is the case or you are
    ==16317==     not sure, please let us know and we'll try to fix it.
    ==16317==     Please note that programs can take substantially more memory than
    ==16317==     normal when running under Valgrind tools, eg. up to twice or
    ==16317==     more, depending on the tool.  On a 64-bit machine, Valgrind
    ==16317==     should be able to make use of up 32GB memory.  On a 32-bit
    ==16317==     machine, Valgrind should be able to use all the memory available
    ==16317==     to a single process, up to 4GB if that's how you have your
    ==16317==     kernel configured.  Most 32-bit Linux setups allow a maximum of
    ==16317==     3GB per process.
    ==16317== 
    ==16317==     Whatever the reason, Valgrind cannot continue.  Sorry.

我试过使用大的交换文件，但并没有变得更好。在我的交换文件快满之前很久就崩溃了。我正在使用Fedora19。有人知道这件事吗?我想我在网上读到过一些关于单个进程可以allocate.If的内存限制的东西。这种情况下，我可以在哪里设置它?至少给我一个好的选择来代替valgrind的人:P.

提前感谢

Answer 1

“大多数32位Linux设置允许每个进程最多3 3GB。”

您已经分配了3013349376字节，这非常接近3 3GB。因此，您可能有一个32位的操作系统，并且您只是耗尽了单个进程的内存(其他大约200MB可能是valgrind开销)