4
我正在使用熊貓做一個環形緩衝區,但內存使用量不斷增加。我究竟做錯了什麼?用熊貓創建緩衝區時發生內存泄漏?
下面是代碼(編輯了一點點距離問題的第一篇文章):
import pandas as pd
import numpy as np
import resource
tempdata = np.zeros((10000,3))
tdf = pd.DataFrame(data=tempdata, columns = ['a', 'b', 'c'])
i = 0
while True:
i += 1
littledf = pd.DataFrame(np.random.rand(1000, 3), columns = ['a', 'b', 'c'])
tdf = pd.concat([tdf[1000:], littledf], ignore_index = True)
del littledf
currentmemory = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss
if i% 1000 == 0:
print 'total memory:%d kb' % (int(currentmemory)/1000)
這就是我得到:
total memory:37945 kb
total memory:38137 kb
total memory:38137 kb
total memory:38768 kb
total memory:38768 kb
total memory:38776 kb
total memory:38834 kb
total memory:38838 kb
total memory:38838 kb
total memory:38850 kb
total memory:38854 kb
total memory:38871 kb
total memory:38871 kb
total memory:38973 kb
total memory:38977 kb
total memory:38989 kb
total memory:38989 kb
total memory:38989 kb
total memory:39399 kb
total memory:39497 kb
total memory:39587 kb
total memory:39587 kb
total memory:39591 kb
total memory:39604 kb
total memory:39604 kb
total memory:39608 kb
total memory:39608 kb
total memory:39608 kb
total memory:39608 kb
total memory:39608 kb
total memory:39608 kb
total memory:39612 kb
不知道它是否與此有關:
https://github.com/pydata/pandas/issues/2659
在帶有蟒蛇Python的MacBook Air上進行測試
奇怪的是,我複製並粘貼此代碼並且沒有泄漏。 0.12和0.13rc。 –
我添加了我得到的內容(並稍微更改了一些代碼)。你有相同還是不同? – Fra
我得到「總內存:59 kb」一路下降。也許操作系統/設置,可能會添加更多的細節:s。雖然可以更好地作爲sep github問題。你有沒有嘗試像其他問題一樣添加gc.collect? –