linuxdcpp-team team mailing list archive

[Steven Sheehy <steven.sheehy@xxxxxxxxx>]

Oh, I also added an option to disable fast hashing until this issue is
resolved. You can find it in the advanced tab of the preferences.

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Excessive swapping during hash
https://bugs.launchpad.net/bugs/376896
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Status in Linux DC++: Incomplete

Bug description:
There is a reproducable problem in linuxdcpp (or maybe it is the kernel/libc?), where hashing a large file causes excessive swapping to occur, while memory usage is far from 100%. I've seen this on at least two different machines, both working under gentoo amd64 and both using 2.6.29.2 kernel.
Steps to reproduce:
1. Start X/GNOME/KDE, some programs in the background to give system something to swap
2. Start hashing some _big_ files (say, 2GIG and more on a system with 4GiGs of RAM)
3. See swapping to occur

I don't know whether thisi is a kernel or stdlib or linuxdcpp issue, but I only see such swapping with linuxdcpp

Here is a "vmstat 2" output during hashing of two big files in the attachment