misc/118645: Xorg need realtime priority for mouse work nice

[Anton Babushkin]

>Number:         118645
>Category:       misc
>Synopsis:       Xorg need realtime priority for mouse work nice
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 13 11:20:01 UTC 2007
>Closed-Date:
>Last-Modified:
>Originator:     Anton Babushkin
>Release:        7.0-BETA4
>Organization:
>Environment:
FreeBSD current.gznet.ru 7.0-BETA4 FreeBSD 7.0-BETA4 #3: Wed Dec 12 16:30:46 MSK 2007     ton at current.gznet.ru:/usr/obj/usr/src/sys/CURRENT  i386

>Description:
When CPU is 100% loaded (compiling something) mouse moves jumpy (like on old PC with MS Windows). This problem can be resolved by setting realtime priority both for moused and X processes. But even in this case keyboard input is slow, delays up to 1 sec. appear somtimes. When using 6.2 all works nice without any rtprio.

# dmesg
Copyright (c) 1992-2007 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.0-BETA4 #3: Wed Dec 12 16:30:46 MSK 2007
    ton at current.gznet.ru:/usr/obj/usr/src/sys/CURRENT
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Mobile Intel(R) Pentium(R) III CPU - M  1200MHz (1196.15-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x6b4  Stepping = 4
  Features=0x383f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE>
real memory  = 267239424 (254 MB)
avail memory = 251920384 (240 MB)
kbd1 at kbdmux0
acpi0: <DELL CPi R  > on motherboard
acpi0: [ITHREAD]
acpi0: reservation of 0, 9fc00 (3) failed
acpi0: reservation of 100000, fdf0000 (3) failed
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_perf0: <ACPI CPU Frequency Control> on cpu0
acpi_acad0: <AC Adapter> on acpi0
battery0: <ACPI Control Method Battery> on acpi0
acpi_lid0: <Control Method Lid Switch> on acpi0
acpi_button0: <Power Button> on acpi0
acpi_button1: <Sleep Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci_link1: BIOS IRQ 11 for 0.31.INTB is invalid
pci0: <ACPI PCI bus> on pcib0
vgapci0: <VGA-compatible display> mem 0xe0000000-0xe7ffffff,0xf4f80000-0xf4ffffff irq 11 at device 2.0 on pci0
agp0: <Intel 82830M (830M GMCH) SVGA controller> on vgapci0
agp0: detected 892k stolen memory
agp0: aperture size is 128M
drm0: <Intel i830M GMCH> on vgapci0
info: [drm] AGP at 0xe0000000 128MB
info: [drm] Initialized i915 1.5.0 20060119
vgapci1: <VGA-compatible display> mem 0xd8000000-0xdfffffff,0xf4f00000-0xf4f7ffff at device 2.1 on pci0
drm1: <Intel i830M GMCH> on vgapci1
info: [drm] AGP at 0xe0000000 128MB
info: [drm] Initialized i915 1.5.0 20060119
..
>How-To-Repeat:
Start comiling something and move mouse.
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: