Comparing valgrind, massif, top, and pmap
我正在尝试了解我的应用程序是否泄漏。
在运行我的应用程序时，我会定期运行
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mapped: 488256K writeable/private: 90144K shared: 0K
mapped: 488260K writeable/private: 101912K shared: 0K mapped: 488256K writeable/private: 102708K shared: 0K mapped: 488260K writeable/private: 105112K shared: 0K |
我运行
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VIRT RES SHR
488260 17684 3020 488256 20060 3032 488256 22700 3032 488256 26132 3032 488256 28772 3032 488256 31880 3032 |
“RES”和”可写/私有”的增加让我怀疑存在泄漏。但是，运行
看到大约 20Mb 可达内存：
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==19998==
==19998== HEAP SUMMARY: ==19998== in use at exit: 20,351,513 bytes in 974 blocks ==19998== total heap usage: 329,404 allocs, 328,430 frees, 34,562,346 bytes allocated ==19998== ==19998== LEAK SUMMARY: ==19998== definitely lost: 63 bytes in 4 blocks ==19998== indirectly lost: 0 bytes in 0 blocks ==19998== possibly lost: 4,679 bytes in 76 blocks ==19998== still reachable: 20,346,771 bytes in 894 blocks ==19998== suppressed: 0 bytes in 0 blocks ==19998== Rerun with –leak-check=full to see details of leaked memory ==19998== ==19998== For counts of detected and suppressed errors, rerun with: -v ==19998== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0) |
我运行
为了理解为什么你的进程的top显示增加，你还需要用