On Monday 17 April 2006 12:39, Anton Krall wrote: > I don't know if this only works with multiple cpus but I have HT enabled > and it shows cpu0 and cpu1 .. I tried the first part of this email and > still the kernel boots and shows 2 cpus.. Will this only work with 2 real > cpus?
I believe so. Hyperthreading is not really SMP. Additionally I think that HT should not be used if asterisk is doing a lot of transcoding - whilst HT gives u 2 'pipes' there is still only one FPU and heavy transcoding will simply bottleneck at the FPU(NB SSE/MMX count as FP since they use the FP registers.). If u turn HT on, a 1% penalty is incurred fir the mutexes required so heavy use of the FPU will actually show a decrease in speed compared to no HT. In theory at least. :-) Paul Hewlett > > |-----Original Message----- > |From: [EMAIL PROTECTED] > |[mailto:[EMAIL PROTECTED] On Behalf Of > |Begumisa Gerald M > |Sent: Monday, April 17, 2006 5:13 AM > |To: Asterisk Users Mailing List - Non-Commercial Discussion > |Subject: Re: [Asterisk-Users] te110p and interrupts > | > |Hi Paul, > | > |Thanks for the message! > | > | On Sun, 16 Apr 2006, Paul Hewlett wrote: > | [...] > | > | > I am curious.. > | > > | > Have you tried disabling CPU1 by setting isolcpus=1 on > | > |the kernel > | > | > command line ? > | > > | > This will make the kernel ignore the second CPU - you > | > |can then run > | > | > asterisk on it by using the taskset command (from schedutils) > | > > | > taskset 0x00000001 asterisk -p > | > > | > and asterisk wlll run on a CPU all on its own. I was about to try > | > this and wondered if you might give it a try and report back. > | > |I haven't done this yet. Once we have physical access to the > |machine, I'll make sure we try this out and see what > |difference it makes. > | > | > |Cheers! > |Gerald. > |_______________________________________________ > |--Bandwidth and Colocation provided by Easynews.com -- > | > |Asterisk-Users mailing list > |To UNSUBSCRIBE or update options visit: > | http://lists.digium.com/mailman/listinfo/asterisk-users > > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > Asterisk-Users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
