Messages in this thread | | | Date | Fri, 24 Jan 2003 13:49:18 +0100 | From | Roman Dementiev <> | Subject | buffer leakage in kernel? |
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Hello everyone,
I've met with following problem (kernel 2.4.20-pre4 ): I write and read sequentially from/to 8 files each of 64 Gbytes (not a mistake, 64 Gbyte), each on different disk. The files are opened with flag O_DIRECT. I have 1 Gbyte RAM, no swap. While this scanning is running, number of "buffers" reported by ''free" and in /proc/meminfo is continuously increasing up to ~ 500 MB !! When the program exits normally or I break it, number of "buffers" does not decrease and even increases if I do operations on other files.
This is not nice at all when I have another applications running with memory consumption > 500 MB: when my "scanner" approaches 50G border on each disk, I've got numerous "Out of memory" murders :(. Even 'ssh' to this machine is killed :(
Could anyone explain why it happens? I suppose that it is a memory leakage in file system buffer management. Is it fixed already in any patch?
Bye, Roman
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