Re: [CentOS] Control IO related to a process
On Tue, 2 Sep 2008 10:21:31 -0700 MHR <[EMAIL PROTECTED]> wrote: > On Tue, Sep 2, 2008 at 9:51 AM, Joseph L. Casale > <[EMAIL PROTECTED]> wrote: > > > > Appreciate that info, I have just been reading about the difference but > > cant say I understand in real life what the difference between deadline > > versus cfq is. I will try changing it on the fly and running my tests. > > > > The CFQ elevator algorithm attempts to be fair to all i/o requests, > without specific regard to performance. The deadline elevator is more > aggressive in scheduling for minimal latency per device. > > For example, if you have one process that is doing more or less random > i/o and another that is doing large block sequential i/o, the deadline > elevator will pander to the latter whereas the cfq elevator will try > to be fair in scheduling the i/os between the processes. > > Here's a decent, short write up on them: > http://www.redhat.com/magazine/008jun05/features/schedulers/ > > HTH > > mhr > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos ionice? has nobidy mentioned this? -- Martyn Hare <[EMAIL PROTECTED]> pgpMoWUeXezzj.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: Help me
Top is preferred, it's a standard just like it's a standard to put: " -- [signature here] " I would recommend top posting. On Mon, 01 Sep 2008 17:12:11 +0100 andylockran <[EMAIL PROTECTED]> wrote: > > on 8-31-2008 9:05 PM [EMAIL PROTECTED] spake the following: > >> Interestingly enough, we use top posting 99% of the time at work, even > >> though it takes extra effort to do so in thunderbird. We had a new > >> employee that started with us, and used bottom posting on some of her > >> replies, and most people thought that her replies were empty. > >> Food for thought, I guess. > > > In thunderbird, it's very easy to change. > > Tools>Accounts>Composition>Automatically Start My Reply ABOVE/BELOW The > Quote. > > :) > > Andy > _______ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos -- Martyn Hare <[EMAIL PROTECTED]> pgpV3p6wMjVW7.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: OT - Windows slowdown?
Yes but Linus could be guest speaker at LinuxChix, Bill has to pay for his women ;-) >> That is why Bill Gates is a billionaire, and Linus Torvalds isn't. > > And who is the happier, I wonder? smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] OT - Windows slowdown?
John R Pierce wrote: > Anne Wilson wrote: >> Applying SP3 to my daughter's laptop has killed performance to the >> point of being almost unusable. Restore Points seem to be lost, so I >> can't go back to before it. >> > > I've installed SP3 on dozens of systems and seen no slowdowns. > > > this is WAY off topic for this list. It seems Service Pack 3 has been hell for a lot of people, including businesses. Windows Fundamentals for Legacy PCs is incompatible with SP3 yet Microsoft lists it on Microsoft Update for that XP variant for example. Here is my advice for XP users wanting SP3, this advice applies to any service pack install... * _NEVER_ use Microsoft [Windows] Update to install service packs (Use the "IT Professionals" multiple installation bundles) * Don't waste space on uninstallation backups (there are command-line switches to prevent this) * Clean out and turn off System Restore before you do it * Make a slipstreamed XP CD to run a Repair installation should something go badly wrong... This is so barely on topic it's just plain _wrong_, but it's the only thing I can give useful input on based on [bad] experience. That said it's not _that_ offtopic given Xen can run Windows and CentOS includes Xen technology ;-) smime.p7s Description: S/MIME Cryptographic Signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
