_syscall4, wake_up_interruptible(), and PID table questions
Alright, since my last e-mail generated no interest, I thought I'd refine my queries: 1. wake_up_interruptible() I am reading http://www.citi.umich.edu/projects/linux-scalability/reports/accept.html and the my question is what solution to the "thundering herd" problem was eventually chosen and is implemented in the 2.4.x kernels? Where can I find more specific information on this implementation? Source code references are welcome. 2. _syscall4 After reading http://www.kegel.com/c10k.html, I have to wonder how exactly sendfile() was implemented in the 2.4.x kernels? Where in the source can I find information? Is there any published documentation on this subject as well? 3. PID table resizing I understand that it is possible to resize the PID table in the 2.4.x kernels? Is this true or misinformation? If true, what do I need to do? Is this a source edit, a compile-time configuration option or a runtime option? If a source edit, which file(s)? Thanks in advance! //////// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
_syscall4, wake_up_interruptible(), and PID table questions
Alright, since my last e-mail generated no interest, I thought I'd refine my queries: 1. wake_up_interruptible() I am reading http://www.citi.umich.edu/projects/linux-scalability/reports/accept.html and the my question is what solution to the thundering herd problem was eventually chosen and is implemented in the 2.4.x kernels? Where can I find more specific information on this implementation? Source code references are welcome. 2. _syscall4 After reading http://www.kegel.com/c10k.html, I have to wonder how exactly sendfile() was implemented in the 2.4.x kernels? Where in the source can I find information? Is there any published documentation on this subject as well? 3. PID table resizing I understand that it is possible to resize the PID table in the 2.4.x kernels? Is this true or misinformation? If true, what do I need to do? Is this a source edit, a compile-time configuration option or a runtime option? If a source edit, which file(s)? Thanks in advance! Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D Drama free in 2001! - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
2.4.x features
I'm looking for information, either in documentation (!) or however its available, about the following features in the 2.4.x series kernels: 1. wake-one 2. _syscall4 3. process ID table resizing Where can I find these documented (no, "the source" isn't a good answer AFAIAC, even though its true)? Or better, can anyone answer the following questions about each of these: A. How do I activate these features? Are they kernel config time parameters or standard? B. How robust is the code implementing these features? Please feel free to let me know if I have been misled if #3 isn't an actual feature. Thanks in advance! //////// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
2.4.x features
I'm looking for information, either in documentation (!) or however its available, about the following features in the 2.4.x series kernels: 1. wake-one 2. _syscall4 3. process ID table resizing Where can I find these documented (no, the source isn't a good answer AFAIAC, even though its true)? Or better, can anyone answer the following questions about each of these: A. How do I activate these features? Are they kernel config time parameters or standard? B. How robust is the code implementing these features? Please feel free to let me know if I have been misled if #3 isn't an actual feature. Thanks in advance! Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D Drama free in 2001! - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
loopback mount won't umount on 2.2.12
Okay, I've seen various references to problems with loopback mounts under (early) 2.2.x kernels. But I don't see any reference to a solution (ie. how to umount the stupid thing). My situation is that I have mounted a CD image on a machine for use in kickstart builds. The mount point is /kickstart/image When I attempt "umount /kickstart/image" and other variations on the theme, I get a "umount: /kickstart/image: device is busy". Is there ANYWAY (w/o rebooting) to unmount this, forcibly or otherwise? Or is the solution only to reboot? TIA! //// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
loopback mount won't umount on 2.2.12
Okay, I've seen various references to problems with loopback mounts under (early) 2.2.x kernels. But I don't see any reference to a solution (ie. how to umount the stupid thing). My situation is that I have mounted a CD image on a machine for use in kickstart builds. The mount point is /kickstart/image When I attempt "umount /kickstart/image" and other variations on the theme, I get a "umount: /kickstart/image: device is busy". Is there ANYWAY (w/o rebooting) to unmount this, forcibly or otherwise? Or is the solution only to reboot? TIA! //// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [Slightly OT] x86 PROM project
Because the original question was: "I've been tossing the idea around in my head for a while, and after I got my first SGI I realized that something like this would be fairly useful. Basically, I'm wondering if anybody is already doing something like this (not linuxBIOS, though the code for that could be a useful base). Thanks." Note the _not_ linuxBIOS part. If memory serves, you said... > On Sun, Mar 04, 2001 at 02:02:38PM -0600, Matthew Fredrickson wrote: > > On Sun, Mar 04, 2001 at 08:08:32PM +0100, Erik Mouw wrote: > > > Have a look at OpenBIOS: > > > > > > http://www.freiburg.linux.de/OpenBIOS/ > > > > > > The project wants to create an IEEE 1275-1994 compliant firmware, like > > > used by SUN (for example). > > > > I don't want to appear to be offensive in regards to this project > > considering I have no prior knowledge about it other than what I've seen > > at the web site just now, but it appears that there is a lot more talk > > than coding occuring at this project. > > Ok, so what about this one? > > http://www.acl.lanl.gov/linuxbios/ > > The code is on sourceforge. > >Michal > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [Slightly OT] x86 PROM project
http://playground.sun.com/1275/ http://www.firmworks.com/ If memory serves, you said... > What does everybody think of the idea of trying to write a RISC PROM-like > BIOS for the x86 architecture? > > I've been tossing the idea around in my head for a while, and after I got > my first SGI I realized that something like this would be fairly useful. > Basically, I'm wondering if anybody is already doing something like this > (not linuxBIOS, though the code for that could be a useful base). Thanks. > > > Matthew Fredrickson > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > //////// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [Slightly OT] x86 PROM project
http://playground.sun.com/1275/ http://www.firmworks.com/ If memory serves, you said... What does everybody think of the idea of trying to write a RISC PROM-like BIOS for the x86 architecture? I've been tossing the idea around in my head for a while, and after I got my first SGI I realized that something like this would be fairly useful. Basically, I'm wondering if anybody is already doing something like this (not linuxBIOS, though the code for that could be a useful base). Thanks. Matthew Fredrickson - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ //////// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [Slightly OT] x86 PROM project
Because the original question was: "I've been tossing the idea around in my head for a while, and after I got my first SGI I realized that something like this would be fairly useful. Basically, I'm wondering if anybody is already doing something like this (not linuxBIOS, though the code for that could be a useful base). Thanks." Note the _not_ linuxBIOS part. If memory serves, you said... On Sun, Mar 04, 2001 at 02:02:38PM -0600, Matthew Fredrickson wrote: On Sun, Mar 04, 2001 at 08:08:32PM +0100, Erik Mouw wrote: Have a look at OpenBIOS: http://www.freiburg.linux.de/OpenBIOS/ The project wants to create an IEEE 1275-1994 compliant firmware, like used by SUN (for example). I don't want to appear to be offensive in regards to this project considering I have no prior knowledge about it other than what I've seen at the web site just now, but it appears that there is a lot more talk than coding occuring at this project. Ok, so what about this one? http://www.acl.lanl.gov/linuxbios/ The code is on sourceforge. Michal - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ //// Khyron mailto:[EMAIL PROTECTED] Key fingerprint = 53BB 08CA 6A4B 8AF8 DF9B 7E71 2D20 AD30 6684 E82D "Drama free in 2001!" - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
