I tried adjusting vm.min_free_kbytes, and also those other settings suggested by Alex. They didn't seem to have any impact, still the test script hanged as earlier. I tried with 8080, 65536 and 80800, and also with the suggested TCP settings.
It seems that I can repro this case 100% with my wget test script. I have now run it total of 9 times, and at minimum it has taken 18 downloads in 77 seconds and at maximum 264 downloads in 1120 seconds before nfs gets stalled. I have attached the script in case that would help in trying to repro the problem (sorry for abusing ubuntu.com in testing :)). There shouldn't be anything special in my system setup, except that I run everything under kvm. ** Attachment added: "nfstest-dl.sh" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/561210/+attachment/1554331/+files/nfstest-dl.sh -- Writing big files to NFS target causes system lock up https://bugs.launchpad.net/bugs/561210 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
