Summary: | kernel(s) with HIGHMEM incredible slow at booting and application startup | ||
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Product: | Gentoo Linux | Reporter: | Petar Forai <petar.forai> |
Component: | [OLD] Core system | Assignee: | Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel> |
Status: | RESOLVED UPSTREAM | ||
Severity: | major | ||
Priority: | High | ||
Version: | unspecified | ||
Hardware: | x86 | ||
OS: | Linux | ||
Whiteboard: | |||
Package list: | Runtime testing required: | --- |
Description
Petar Forai
2005-05-26 09:44:19 UTC
am i right here with posting kernel bugs - or should i stick with real kernel developers over at kernel.org? Here is ok, see http://dev.gentoo.org/~dsd/gentoo-sources/bugs.htm Please try and reproduce with 2.6.12-rc5 (In reply to comment #2) > Here is ok, see http://dev.gentoo.org/~dsd/gentoo-sources/bugs.htm > Please try and reproduce with 2.6.12-rc5 tried it with 2.6.12-rc4 - nothing changed. i'll try rc5 asap. (In reply to comment #3) > (In reply to comment #2) > > Here is ok, see http://dev.gentoo.org/~dsd/gentoo-sources/bugs.htm > > Please try and reproduce with 2.6.12-rc5 > > tried it with 2.6.12-rc4 - nothing changed. > i'll try rc5 asap. what's realy intresing is that putc/getc and disc I/O performance (!hdparm) is realy bad: highmem > 1024MB Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 843 99.9 214295 78.5 766914 100.3 731 99.9 2364623 101.6 97878.5 185.9 highmem, booted with 880MB Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done... -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU 100 45898 99.7 393189 100.2 894995 94.4 50903 100.0 2453987 100.6 147552.5 184.4 putc's are 50 times slower! In that case, it looks like an upstream bug. Please file a bug report at http://bugzilla.kernel.org and post the resultant URL here. |