Re: F13: Delay in screen refresh
On Mon, May 31, 2010 at 10:07 PM, Marco Guazzone marco.guazz...@gmail.com wrote: On Mon, May 31, 2010 at 5:29 PM, Marco Guazzone [cut] The problem appears also under GNOME. I've tried with xterm, ViM, and OpenOffice. For instance, with oowriter the latency problem happens during tooltip drawing (e.g., go to File - Recent Documents and then move the mouse up and down along the list of open documents slow enough (but not too slow) in order to let the tooltipo appears; in this case, I can note a delay which make appear an empty cyan rectangle and after a few the tooltip text) :((( FYK Finally, it seems that some of the recent updates solved this annoying problem. Cheers, -- Marco Cheers, -- Marco -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: F13: Delay in screen refresh
On Sat, May 29, 2010 at 3:06 PM, Marco Guazzone marco.guazz...@gmail.com wrote: Hi, I've noticed that there is a some kind of delay in the screen refresh. For instance, under VIM when I move the cursor (that is a black rectangle) under a character, it takes between 1 and 4 secs before the character appears inside the cursor. I've experienced the same issue under OpenOffice and FireFox. This is really annoying. :( Under F12 no problem Does any other experienced this behaviour? My system is: * OS: F13 x86_64 - up-to-dated * WM: OpenBox * CPU: Intel Core 2 Duo * GPU: Intel GM965/GL960 * RAM: 2GB Thank you so much! Hi! It seems that this problem is only affecting me. In the meanwhile I've noticed that this delay seems to be really X dependent, since almost every applications exhibits it. For instance, I've tried with: * bash inside xterm (e.g., execute ls and then move up with Shift+PgUp) * gvim ... Please, can anyone help me? Thank you very much!! Cheers, -- Marco -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: F13: Delay in screen refresh
On 31 May 2010 09:02, Marco Guazzone marco.guazz...@gmail.com wrote: On Sat, May 29, 2010 at 3:06 PM, Marco Guazzone marco.guazz...@gmail.com wrote: Hi, I've noticed that there is a some kind of delay in the screen refresh. For instance, under VIM when I move the cursor (that is a black rectangle) under a character, it takes between 1 and 4 secs before the character appears inside the cursor. I've experienced the same issue under OpenOffice and FireFox. This is really annoying. :( Under F12 no problem Does any other experienced this behaviour? My system is: * OS: F13 x86_64 - up-to-dated * WM: OpenBox * CPU: Intel Core 2 Duo * GPU: Intel GM965/GL960 * RAM: 2GB Thank you so much! Hi! It seems that this problem is only affecting me. In the meanwhile I've noticed that this delay seems to be really X dependent, since almost every applications exhibits it. For instance, I've tried with: * bash inside xterm (e.g., execute ls and then move up with Shift+PgUp) * gvim ... Please, can anyone help me? Thank you very much!! Cheers, -- Marco Hi Marco, I'm no expert but it sound to me like you have a latency issue. For some reason your machine is sometimes having to wait 1 to 4 seconds before it can give a program (vim, bash, etc.) its CPU time slice, hence the apparent delay. I have seen this kind of thing before when the kernel has to re-try disk I/O multiple times on a failing hard drive. Suggestions: 1) Play music! If it pauses when your app pauses it is an OS wide issue effecting everything. 2) Run top in another window. When top refreshes after the pause does any process jump to the top? 3) Check /var/log/messages for any errors. Vague ideas: 4) Google for investigating latency issues. 5) With modern kernels I guess it should be possible to dynamically trace it to find the lateny issue, but I have no idea how. Sorry I can't be more help, Mike -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: F13: Delay in screen refresh
On Mon, May 31, 2010 at 10:51 AM, Mike Fleetwood mike.fleetw...@googlemail.com wrote: [... cut ...] Hi Marco, I'm no expert but it sound to me like you have a latency issue. For some reason your machine is sometimes having to wait 1 to 4 seconds before it can give a program (vim, bash, etc.) its CPU time slice, hence the apparent delay. I have seen this kind of thing before when the kernel has to re-try disk I/O multiple times on a failing hard drive. Suggestions: 1) Play music! If it pauses when your app pauses it is an OS wide issue effecting everything. I will try tonight at home 2) Run top in another window. When top refreshes after the pause does any process jump to the top? No process seems to have a great impact on CPU usage. These below are the more time consuming processes: 1563 root 20 0 172m 42m 11m S 3.6 2.1 4:39.59 Xorg 2751 marco20 0 942m 173m 30m S 3.6 8.7 4:32.69 firefox 2790 marco20 0 419m 19m 10m S 2.0 1.0 2:11.23 npviewer.bin After refresh, Xorg goes from 1.0 to 2.5 % of CPU. This percentage increase to ~16% when I switch between wm virtual desktops. 3) Check /var/log/messages for any errors. Done, but no meaningful information (or maybe I don't know what to look for). Vague ideas: 4) Google for investigating latency issues. 5) With modern kernels I guess it should be possible to dynamically trace it to find the lateny issue, but I have no idea how. Sorry I can't be more help, Mike Thank you very much for your help. Hope someone other can help me :) In addition to system information provided in previous email I add that my notebook is a DELL Latitude D830 Cheers, -- Marco -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: F13: Delay in screen refresh
On 05/31/2010 05:24 AM, Marco Guazzone wrote: Weird - I've seen similar when something is either occupying large CPU or large memory. If something has sucked up the memory and the application is paging off disk for example. Look for any processes which are taking up a lot of memory (run away firefox, chrome etc) Can you run vmstat 1 in a terminal window while this happening too please. I've also seen this with driver problems causing the kernel to have some kind of problem (page faults, oops etc). For /var/log/messages I'd egrep 'warn|err' /var/log/message Also try looking in the X log file(s) (/var/log/Xorg.0.log and ~/.xsession-errors) It is also possible your disk is dying and the errors cannot be written out. You could try checking if there are hardware problems (perhaps run your dell diagnostics disk). gene -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: F13: Delay in screen refresh
On Mon, May 31, 2010 at 2:52 PM, Genes MailLists li...@sapience.com wrote: On 05/31/2010 05:24 AM, Marco Guazzone wrote: Weird - I've seen similar when something is either occupying large CPU or large memory. If something has sucked up the memory and the application is paging off disk for example. Look for any processes which are taking up a lot of memory (run away firefox, chrome etc) Hi thank you for replying. Here below is the information you have asked But before you dig into it I want to say that it seem a problem of the OpenBox window manager. I say so since I've tried to use GNOME and apparently the problem seems to be disappeared (for instance under ViM there is no delay in showing characters under the cursor). While the problem reappears if I turn to OpenBox (without GNOME). Very strange, under F12 I had no problem even with the same version of OpenBox. I think I should post a bug report, do you? Can you run vmstat 1 in a terminal window while this happening too please. Sure here below the output. This is taken while moving the cursor inside ViM character-by-character (I confirm the delay of some second in showing the character under the cursor) --- [vmstat] --- procs ---memory-- ---swap-- -io --system-- -cpu- r b swpd free buff cache si sobibo in cs us sy id wa st 2 0 4216 124544 108840 912952003321 448 520 7 5 87 1 0 0 0 4216 124412 108840 91324400 0 0 516 1107 1 2 97 0 0 0 0 4216 124412 108840 91324000 0 0 316 465 1 0 99 0 0 0 0 4216 124412 108840 91304400 0 0 515 905 1 2 97 0 0 0 0 4216 124412 108840 91304400 0 0 293 455 1 0 99 0 0 1 0 4216 124412 108840 91304400 0 0 409 569 1 0 98 0 0 0 0 4216 124412 108840 91329200 0 0 419 966 1 1 98 0 0 0 0 4216 124412 108840 91334800 0 0 523 1237 2 2 97 0 0 0 0 4216 124412 108840 91334800 0 0 447 806 1 2 97 0 0 1 0 4216 124412 108840 91302800 0 0 428 624 2 0 98 0 0 0 0 4216 124412 108840 91302800 0 0 324 469 1 0 99 0 0 0 0 4216 124412 108840 91302800 0 0 384 564 1 0 99 0 0 0 0 4216 124412 108840 91302800 0 0 317 500 2 1 97 0 0 0 0 4216 124412 108840 91303200 0 0 657 958 5 1 93 0 0 1 0 4216 124412 108840 91303200 0 0 307 455 1 0 99 0 0 0 0 4216 124412 108840 91303200 0 0 386 559 1 0 99 0 0 0 0 4216 124412 108840 91328000 0 0 690 1228 2 3 94 0 0 --- [/vmstat] --- I've also seen this with driver problems causing the kernel to have some kind of problem (page faults, oops etc). For /var/log/messages I'd egrep 'warn|err' /var/log/message --- [messages] --- May 31 09:08:51 scramble kernel: ACPI: Using IOAPIC for interrupt routing May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKA] (IRQs 9 10 *11) May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKB] (IRQs 5 7) *3 May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKC] (IRQs 9 *10 11) May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKD] (IRQs 5 7 9 10 *11) May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 6 7 9 *10 11 12 14 15) May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 6 7 *9 10 11 12 14 15) May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKG] (IRQs 3 4 *5 6 7 9 10 11 12 14 15) May 31 09:08:51 scramble kernel: ACPI: PCI Interrupt Link [LNKH] (IRQs 3 4 5 6 7 9 10 11 12 14 15) *0, disabled. May 31 09:08:58 scramble libvirtd: 09:08:58.498: warning : qemudStartup:1150 : Unable to create cgroup for driver: No such device or address May 31 09:09:00 scramble libvirtd: 09:09:00.374: warning : lxcStartup:1748 : Unable to create cgroup for driver: No such device or address May 31 09:09:09 scramble dbus: [system] Rejected send message, 1 matched rules; type=method_call, sender=:1.20 (uid=42 pid=1696 comm=gnome-power-manager) interface=org.freedesktop.Hal.Device.LaptopPanel member=GetBrightness error name=(unset) requested_reply=0 destination=:1.1 (uid=0 pid=1303 comm=hald)) May 31 09:09:09 scramble dbus: [system] Rejected send message, 1 matched rules; type=method_call, sender=:1.20 (uid=42 pid=1696 comm=gnome-power-manager) interface=org.freedesktop.Hal.Device.LaptopPanel member=SetBrightness error name=(unset) requested_reply=0 destination=:1.1 (uid=0 pid=1303 comm=hald)) May 31 09:33:08 scramble python: hp-makeuri[3157]: error: Device not found --- [/messages] --- Also try looking in the X log file(s) (/var/log/Xorg.0.log and ~/.xsession-errors) --- [xsession-errors] --- -- I: 0 [ 13 ] -- I: 1 [ 13 ] -- I: 2 [ 13 ] -- I: 3 [ 13 ] -- I: 4 [ 12 ] -- I: 5 [ 11
Re: F13: Delay in screen refresh
On Mon, May 31, 2010 at 4:43 PM, Genes MailLists li...@sapience.com wrote: On 05/31/2010 09:58 AM, Marco Guazzone wrote: Here below is the information you have asked But before you dig into it I want to say that it seem a problem of the OpenBox window manager. I say so since I've tried to use GNOME and apparently the problem seems to be disappeared (for instance under ViM there is no delay in showing characters under the cursor). Ahah ... yes indeed sounds like openbox is busted for some reason ... good catch. I found no obvious issues with mem pressure etc ... file a bug def ... I know nothing of openbox (honestly had not even heard of it till this email!) :) It's a light-weight window manager and you can try It with LXDE Fedora spin: http://spins.fedoraproject.org/lxde/ Good luck. Glad you found the source of the problem ... and can use gnome as a work around. Thank you very much for the help! Cheer, -- Marco -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
Re: F13: Delay in screen refresh
On Mon, May 31, 2010 at 5:29 PM, Marco Guazzone marco.guazz...@gmail.com wrote: On Mon, May 31, 2010 at 4:43 PM, Genes MailLists li...@sapience.com wrote: On 05/31/2010 09:58 AM, Marco Guazzone wrote: Here below is the information you have asked But before you dig into it I want to say that it seem a problem of the OpenBox window manager. I say so since I've tried to use GNOME and apparently the problem seems to be disappeared (for instance under ViM there is no delay in showing characters under the cursor). Ahah ... yes indeed sounds like openbox is busted for some reason ... good catch. I found no obvious issues with mem pressure etc ... file a bug def ... I know nothing of openbox (honestly had not even heard of it till this email!) :) It's a light-weight window manager and you can try It with LXDE Fedora spin: http://spins.fedoraproject.org/lxde/ Good luck. Glad you found the source of the problem ... and can use gnome as a work around. I speak too quickly! :( The problem appears also under GNOME. I've tried with xterm, ViM, and OpenOffice. For instance, with oowriter the latency problem happens during tooltip drawing (e.g., go to File - Recent Documents and then move the mouse up and down along the list of open documents slow enough (but not too slow) in order to let the tooltipo appears; in this case, I can note a delay which make appear an empty cyan rectangle and after a few the tooltip text) :((( Cheers, -- Marco -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
F13: Delay in screen refresh
Hi, I've noticed that there is a some kind of delay in the screen refresh. For instance, under VIM when I move the cursor (that is a black rectangle) under a character, it takes between 1 and 4 secs before the character appears inside the cursor. I've experienced the same issue under OpenOffice and FireFox. This is really annoying. :( Under F12 no problem Does any other experienced this behaviour? My system is: * OS: F13 x86_64 - up-to-dated * WM: OpenBox * CPU: Intel Core 2 Duo * GPU: Intel GM965/GL960 * RAM: 2GB Thank you so much! -- Marco -- users mailing list users@lists.fedoraproject.org To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
