Summary: | DVD-RAm Cache problem | ||
---|---|---|---|
Product: | Gentoo Linux | Reporter: | Frank Noack <fgroups> |
Component: | [OLD] Core system | Assignee: | Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel> |
Status: | RESOLVED UPSTREAM | ||
Severity: | normal | ||
Priority: | High | ||
Version: | 2006.0 | ||
Hardware: | x86 | ||
OS: | Linux | ||
URL: | http://bugzilla.kernel.org/show_bug.cgi?id=5893 | ||
Whiteboard: | |||
Package list: | Runtime testing required: | --- |
Description
Frank Noack
2006-07-28 06:57:14 UTC
Please reproduce this on the latest development kernel, currently 2.6.18-rc4 (In reply to comment #1) > Please reproduce this on the latest development kernel, currently 2.6.18-rc4 > I tested with 2.6.18-rc4. top says: top - 16:02:38 up 57 min, 1 user, load average: 5.51, 5.94, 4.83 Tasks: 104 total, 7 running, 97 sleeping, 0 stopped, 0 zombie Cpu(s): 8.6% us, 2.3% sy, 2.0% ni, 0.0% id, 86.0% wa, 0.7% hi, 0.3% si Mem: 515100k total, 509560k used, 5540k free, 9984k buffers Swap: 987956k total, 97888k used, 890068k free, 177040k cached for 313 MB i need over 22 minutes for copy. past 28 minutes the cache is written on disk. It looks like before. High CPU load, slow speed 200 KB/s for big files. Thanks, will watch upstream bug (In reply to comment #3) > Thanks, will watch upstream bug > I tested with kernel 2.6.17 and vm.dirty_ratio=0 (standart vm.dirty_ratio=40) i got a better performanc with lower cpu-load. #mount /dev/hde on /media/cdrecorder type udf (rw,noatime) I copied 698 Mb real 14m40.762s user 0m0.098s sys 0m6.399s ------------------------------------------------------------------ The same copy with vm.dirty_ratio=40 real 25m55.849s user 0m0.086s sys 0m6.638s hth Frank Please write that (and all other info you find) on the upstream bug |