Python在芹菜检索结果时快速泄漏内存

2024-04-19 23:22:05 发布

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我编写的将任务添加到MyCelery队列的脚本正在泄漏内存(以至于内核在20分钟后终止进程)。在这个脚本中,我只是每60秒重复执行300个相同的任务(在while True:中)。你知道吗

传递给任务的参数makeGroupRequest()是包含字符串的字典,根据hpy和objgraph的说法,dict和字符串也是内存中不可控增长的内容。我在下面的循环的连续迭代中包含了hpy的输出。你知道吗

我花了好几天的时间在这上面,我不明白为什么内存会失控地增长,因为在循环之间没有任何东西可以重复使用。如果我跳过任务的检索,内存看起来不会泄漏(因此实际上是.get()调用泄漏内存)。我如何确定发生了什么以及如何阻止增长?你知道吗

下面是正在执行的代码的概要。我正在使用rpc://后端。你知道吗

while True:

    # preparation is done here to set set up the arguments for the tasks (processedChains)

    chains = []

    for processedChain in processedChains:

        # shorthanding
        supportingData = processedChain["supportingDataAndCheckedGroups"]

        # init the first element, which includes the supportingData and the first group
        argsList = [(supportingData, processedChain["groups"][0])]

        # add in the rest of the groups
        argsList.extend([(groupInChain,) for groupInChain in processedChain["groups"][1:]])

        # actually create the chain
        chain = celery.chain(*[makeGroupRequest.signature(params, options={'queue':queue}) for params in argsList])

        # add this to the list of chains
        chains.append(chain)

    groupSignature = celery.group(*chains).apply_async()

    # this line appears to cause a large increase in memory each cycle
    results = groupSignature.get(timeout = 2 * acceptableLoopTime)

    time.sleep(60)

以下是成功运行时hpy的输出:

回路2:

Partition of a set of 366560 objects. Total size = 57136824 bytes.
 Index  Count   %     Size   % Cumulative  % Kind (class / dict of class)
     0  27065   7 17665112  31  17665112  31 dict (no owner)
     1 122390  33 11966720  21  29631832  52 unicode
     2  89133  24  8291952  15  37923784  66 str
     3  45448  12  3802968   7  41726752  73 tuple
     4    548   0  1631072   3  43357824  76 dict of module
     5  11195   3  1432960   3  44790784  78 types.CodeType
     6   9224   3  1343296   2  46134080  81 list
     7  11123   3  1334760   2  47468840  83 function
     8   1414   0  1274552   2  48743392  85 type
     9   1414   0  1240336   2  49983728  87 dict of type

回路3:

 Index  Count   %     Size   % Cumulative  % Kind (class / dict of class)
     0  44754   9 29240496  37  29240496  37 dict (no owner)
     1 224883  44 20946280  26  50186776  63 unicode
     2  89104  18  8290248  10  58477024  74 str
     3  45455   9  3803288   5  62280312  79 tuple
     4  14955   3  2149784   3  64430096  81 list
     5    548   0  1631072   2  66061168  83 dict of module
     6  11195   2  1432960   2  67494128  85 types.CodeType
     7  11122   2  1334640   2  68828768  87 function
     8   1402   0  1263704   2  70092472  88 type
     9   1402   0  1236976   2  71329448  90 dict of type

Tags: oftheto内存inchainfortype