Re: Swap oddities

2007-10-30 Thread Rob van der Heij
On 10/30/07, Marcy Cortes [EMAIL PROTECTED] wrote: huge 15 IFL at peak app :)... We've had our share there of these and badly written code before... The generational GC, new with 6.1, seems to be a *phenomonal* difference (and I don't say that lightly never believing that perf knobs at the

Re: Swap oddities

2007-10-29 Thread Vic Cross
On Sun, 28 Oct 2007 08:41:16 am Marcy Cortes wrote: So, if I'm understanding right, those would be dirty pages no longer needed hanging out there in swap? That's right -- but you'll get arguments on the definition of no longer needed. Having sent a page to the swap device, Linux will keep it

Re: Swap oddities

2007-10-29 Thread Marcy Cortes
PROTECTED] On Behalf Of Vic Cross Sent: Monday, October 29, 2007 7:58 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Swap oddities On Sun, 28 Oct 2007 08:41:16 am Marcy Cortes wrote: So, if I'm understanding right, those would be dirty pages no longer needed hanging out there in swap

Re: Swap oddities

2007-10-29 Thread Vic Cross
On Tue, 30 Oct 2007 06:19:33 am Marcy Cortes wrote: I'm not sure it is working as designed. I never said it was a good design -- and perhaps I should have read your earlier messages prior to saying that. :) It does depend on your point of view though -- it's another one of these aspects that

Re: Swap oddities

2007-10-29 Thread Marcy Cortes
-mail and delete this message. Thank you for your cooperation. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Vic Cross Sent: Monday, October 29, 2007 7:29 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: [LINUX-390] Swap oddities On Tue, 30 Oct 2007 06:19:33

Swap oddities

2007-10-27 Thread Marcy Cortes
OK, this test one is sles9x (2.6.5-7.286-s390x) - was6.1.. Idle. Using 901MB Swap space (on 4 vdisks) And like 217M in the cache I decided to see if I could make the cache go away. I set vm.swappiness=0 Then I did swapoff / swapon 1 vdisk at a time It cleared up the swap space - taking it down