Re: [PATCH] Minor scheduler fix to get rid of skipping in xmms
From: Cliff White
Date: Wed Sep 10 2003 - 19:16:46 EST
>
>
> Cliff White wrote:
>
> >> Nick Piggin wrote:
> >>
> >
> >>Con Kolivas wrote:
> >>
> >>
> >
> >>Hi Con,
> >>Any chance you could give this
> >>http://www.kerneltrap.org/~npiggin/v14/sched-rollup-nopolicy-v14.gz
> >>a try? It should apply against test5.
> >>
> >>
> >>
> >I have some STP tests scheduled against this also (PLM 2117)
> >Please let me know if you want other combinations tested - am just catching up
> >on
> >this thread.
> >cliffw
> >
>
> Thanks Cliff that would be cool. If you could test this:
> http://www.kerneltrap.org/~npiggin/v14/sched-rollup-v14.gz
> as well would be good. The previous one is more important though.
>
sched-rollup-v14 runs good on 2-cpu w/reaim (more in next email):
example:
http://khack.osdl.org/stp/279657/
Has oops on 4-cpu when running the dbt2-1tier database test(below):
Two runs, different oops.
Let me know how much more detail you need.
Both machines are Intel PIII x ~800mhz w/ 1GB RAM/cpu
Diffs between the 2 and 4 way would include. :
- different SCSI controllers
- database uses raw IO
kernel .config files should be the same for both, other
than SCSI.
cliffw
----------------------------
Sep 10 15:44:30 stp4-000 kernel: sdo: sdo1
Unable to handle kernel paging request at virtual address 4d7a7153
printing eip:
c011c1f9
*pde = 0e81a067
*pte = 00000000
Oops: 0002 [#1]
CPU: 3
EIP: 0060:[<c011c1f9>] Not tainted
EFLAGS: 00010003
EIP is at load_balance+0x2a9/0x4d0
eax: de9c4998 ebx: c366a518 ecx: 4d7a7153 edx: c3672100
esi: c366a518 edi: c366a4f8 ebp: c3e8df64 esp: c3e8df30
ds: 007b es: 007b ss: 0068
Process kernel (pid: 4246, threadinfo=c3e8c000 task=f7b9b300)
Stack: c3669bc0 c366a104 c3669bc0 c366a518 c366a100 00000000 00000003 00000080
0000000f 00000002 c3e8c000 c3671bc0 0000000f c3e8df88 c011c486 c3671bc0
00000000 0000000f 00000000 00000001 00000000 c0412084 c3e8dfc4 c012a6a5
Call Trace:
[<c011c486>] rebalance_tick+0x66/0xa0
[<c012a6a5>] update_process_times+0x45/0x60
[<c0117961>] smp_apic_timer_interrupt+0x141/0x150
[<c010a0ca>] apic_timer_interrupt+0x1a/0x20
Code: 89 19 89 4b 04 8b 47 18 0f ab 42 04 ff 02 89 57 28 8b 5d 08
----------
second 4-cpu run, same test
--------
nable to handle kernel paging request at virtual address 20190078
printing eip:
c011c9c4
*pde = 00000000
Oops: 0002 [#1]
CPU: 1
EIP: 0060:[<c011c9c4>] Not tainted
EFLAGS: 00010002
EIP is at schedule+0x224/0x5d0
eax: 00000001 ebx: cacfd940 ecx: 00000001 edx: 20190000
esi: de984460 edi: f73a8e00 ebp: caed3c28 esp: caed3be8
ds: 007b es: 007b ss: 0068
Process awk (pid: 9673, threadinfo=caed2000 task=cacfd940)
Stack: de984460 840e6b72 00000003 d1bf3120 c3661bc0 c3661020 00000001 bfffa000
c11c03e0 00000007 f73a8e00 c3661590 003fe5d0 caed2000 0324ef80 f7983dc0
caed3c34 c011cda6 e8912660 00000001 c0150ed4 c3661034 00000000 00000000
Call Trace:
[<c011cda6>] preempt_schedule+0x36/0x50
[<c0150ed4>] exit_mmap+0x1e4/0x240
[<c011f6a0>] mmput+0x70/0xc0
[<c0169bad>] exec_mmap+0x11d/0x210
[<c0169e03>] flush_old_exec+0x163/0xa10
[<c0169a80>] kernel_read+0x50/0x60
[<c018c2cc>] load_elf_binary+0x2dc/0xbc0
[<c011a148>] pgd_alloc+0x18/0x20
[<c011f59d>] mm_init+0xbd/0x100
[<c0169533>] copy_strings+0x213/0x290
[<c018bff0>] load_elf_binary+0x0/0xbc0
[<c016aa41>] search_binary_handler+0xa1/0x210
[<c016adc4>] do_execve+0x214/0x250
[<c0107c80>] sys_execve+0x50/0x80
[<c0109689>] sysenter_past_esp+0x52/0x71
Code: f0 0f ab 42 78 8b 42 10 05 00 00 00 40 0f 22 d8 8b 8a 9c 00
_______________________________________________
cliffw
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