Hi Karl, Thanks for all the information you have provided, It helps. As Lin has said, your problem is like 6718912 though the original submitter there did not see the problem on gnome-settings-daemon, but gnome-panel but the behavior is similar. I have done some investigation and I have narrowed down the root cause, but the solution is not very clear yet, What I have found so far is this:
- since 2.24.0 of gsd, fonts monitoring has changed from xft2 to fontconfig and the monitoring of fonts changes are done using gio API. These changes seems to have caused, number of fonts directory (88 on snv b111) [1] x number of entries (/etc/mnttab) of ioctl(19, MNTIOC_GETMNTENT, 0x08047614) whenever /etc/mnttab is updated. - This is particularly bad in a Sun Ray environment, since it is more likely for user login to have cause an update of /etc/mnttab. The total number of ioctl is multiplied by the number of login users on the system all at the same time. I have logged http://bugzilla.gnome.org/show_bug.cgi?id=585360 for now and will continue to look into this. -Ghee [1] The number of fonts is made of up the entries in the section of <!-- Font directory list --> /etc/fonts/fonts.conf and all the directories in /etc/fonts/conf.d/ If you are brave enough to play around with these fonts list, you can most likely to reduce the number of ioctl call significantly. Karl Rossing wrote: > Lin Ma wrote: >> On 06/03/09 05:11, Karl Rossing wrote: >>> Lin, >>> >>> It seems that all 56 gnome-settings-daemon seem to an ioctl at the >>> same time every 5 seconds. That drives the load averages up. >>> >>> We currently have 36 gnome-settings-daemon running and it seems to >>> an ioctl every minute or so. >>> >>> I'm not sure that what point you want a pstack done and of which >>> gnome-settings-daemon process. >> I don't know which is the best way to know what the highest frequency >> of ioctl is related. So could you use dtrace aggregations to find out >> the highest ustack frequency (ustack is a dtrace function). > knowlegde > I ran dtruss and have the output if anyone is interested. I don't > think I can attach files to this list. > > Karl > > > CONFIDENTIALITY NOTICE: This communication (including all > attachments) is > confidential and is intended for the use of the named addressee(s) > only and > may contain information that is private, confidential, privileged, and > exempt from disclosure under law. All rights to privilege are expressly > claimed and reserved and are not waived. Any use, dissemination, > distribution, copying or disclosure of this message and any > attachments, in > whole or in part, by anyone other than the intended recipient(s) is > strictly > prohibited. If you have received this communication in error, please > notify > the sender immediately, delete this communication from all data storage > devices and destroy all hard copies. > _______________________________________________ > desktop-discuss mailing list > desktop-discuss at opensolaris.org
