Re: [SLUG] Oddball memory usage?

2007-02-26 Thread Tony Sceats
Actually, si and so refer to entire processes being swapped, not paging traffic, so they'll never be non-zero on a modern Linux system. I'm not sure what type of Linux system you're using, but this is not true at least for what's in front of me (FC6) $ vmstat 1 1 procs

Re: [SLUG] Oddball memory usage?

2007-02-25 Thread Peter Chubb
zhasper == zhasper [EMAIL PROTECTED] writes: zhasper On 22/02/07, Howard Lowndes [EMAIL PROTECTED] wrote: It's recommended that your swap space should be 2x your RAM. In your case it's .2x zhasper Blanket statement != useful. Depends on what *else* you're using swsap for. If you want

Re: [SLUG] Oddball memory usage?

2007-02-25 Thread Peter Chubb
Sonia == Sonia Hamilton [EMAIL PROTECTED] writes: Sonia * On Thu, Feb 22, 2007 at 04:16:04PM +1100, Peter Hardy wrote: Sonia correct me if I'm wrong vmstat is your friend. A figure Sonia consistently 0 for the so column (swap out) often indicates Sonia problems. My understanding is the memory

Re: [SLUG] Oddball memory usage?

2007-02-23 Thread Steve Kowalik
On Thu, 22 Feb 2007 16:16:04 +1100, Peter Hardy uttered I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352 188732 0 1566443165540 -/+ buffers/cache: 14941683510916 Swap:

Re: [SLUG] Oddball memory usage?

2007-02-23 Thread Sonia Hamilton
* On Fri, Feb 23, 2007 at 03:05:05PM +1100, Amos Shapira wrote: On 23/02/07, Peter Hardy [EMAIL PROTECTED] wrote: IBM do a good book on Linux Performance Tuning, which explains this well. Oh, cool. I'll have to add it to my reading list. Thanks. I was looking for a link to include in

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Zhasper
On 22/02/07, Peter Hardy [EMAIL PROTECTED] wrote: On Thu, 2007-02-22 at 16:24 +1100, Zhasper wrote: On 22/02/07, Peter Hardy [EMAIL PROTECTED] wrote: I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Michael Chesterton
Peter Hardy [EMAIL PROTECTED] writes: On Thu, 2007-02-22 at 16:24 +1100, Howard Lowndes wrote: It's recommended that your swap space should be 2x your RAM. In your case it's .2x Has anybody seriously made such a recommendation this millenium? early 2.4 kernels, linus, alan, rik, etc, said

RE: [SLUG] Oddball memory usage?

2007-02-22 Thread Adelle Hartley
Peter Hardy wrote: It's recommended that your swap space should be 2x your RAM. In your case it's .2x Has anybody seriously made such a recommendation this millenium? It was only briefly a good recommendation for Windows 95, which I recall ran slower when physical ram + swap went over

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Martin Visser
I think you'll find the formula dated to the time when most people said I really need my total memory address space to be n megabytes, but I can only possibly afford n/3 megabytes of RAM, so I have to just make do with 2n/3 being on a relatively slow hard disk. This certainly applied when I

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Alex Samad
On Thu, Feb 22, 2007 at 09:57:48PM +1100, Howard Lowndes wrote: Michael Chesterton wrote: Peter Hardy [EMAIL PROTECTED] writes: On Thu, 2007-02-22 at 16:24 +1100, Howard Lowndes wrote: It's recommended that your swap space should be 2x your RAM. In your case it's .2x Has anybody

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Amos Shapira
On 23/02/07, Martin Visser [EMAIL PROTECTED] wrote: I think you'll find the formula dated to the time when most people said I really need my total memory address space to be n megabytes, but I can only possibly afford n/3 megabytes of RAM, so I have to just make do with 2n/3 being on a

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Sonia Hamilton
* On Thu, Feb 22, 2007 at 04:16:04PM +1100, Peter Hardy wrote: I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352 188732 0 1566443165540 -/+ buffers/cache: 14941683510916 Swap:

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Peter Hardy
Hey hey. On Fri, 2007-02-23 at 14:09 +1100, Sonia Hamilton wrote: correct me if I'm wrong vmstat is your friend. A figure consistently 0 for the so column (swap out) often indicates problems. My understanding is the memory manager in 2.6 will use a lot of swap on purpose. /correct me if I'm

Re: [SLUG] Oddball memory usage?

2007-02-22 Thread Amos Shapira
On 23/02/07, Peter Hardy [EMAIL PROTECTED] wrote: IBM do a good book on Linux Performance Tuning, which explains this well. Oh, cool. I'll have to add it to my reading list. Thanks. I was looking for a link to include in a to read list when I found the following review:

[SLUG] Oddball memory usage?

2007-02-21 Thread Peter Hardy
I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352 188732 0 1566443165540 -/+ buffers/cache: 14941683510916 Swap: 10526161052616 0 Is this sort of usage normal?

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Rev Simon Rumble
This one time, at band camp, Peter Hardy wrote: Is this sort of usage normal? Filling a gigabyte of swap space while just under 1.5GB of memory is going towards buffers seems odd to me. And vmstat reports no usage of this swap space over a 15 minute period. Just trust it. It knows what it's

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Zhasper
On 22/02/07, Peter Hardy [EMAIL PROTECTED] wrote: I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352 188732 0 1566443165540 -/+ buffers/cache: 14941683510916 Swap: 1052616

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Peter Hardy
On Thu, 2007-02-22 at 05:22 +, Rev Simon Rumble wrote: This one time, at band camp, Peter Hardy wrote: Is this sort of usage normal? Filling a gigabyte of swap space while just under 1.5GB of memory is going towards buffers seems odd to me. And vmstat reports no usage of this swap

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread jam
On Thursday 22 February 2007 14:42, [EMAIL PROTECTED] wrote: I'm a little puzzled by this:               total       used       free     shared    buffers     cached Mem:        5005084    4816352     188732          0     156644    3165540 -/+ buffers/cache:     1494168    3510916 Swap:    

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Zhasper
On 22/02/07, Howard Lowndes [EMAIL PROTECTED] wrote: It's recommended that your swap space should be 2x your RAM. In your case it's .2x Blanket statement != useful. On a desktop, where I'm putting OOo in the background and letting firefox chew all my ram for a while - yes, I'll take lots of

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Jeremy Portzer
On Thu, 22 Feb 2007, Peter Hardy wrote: I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352 188732 0 1566443165540 -/+ buffers/cache: 14941683510916 Swap: 1052616

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Peter Hardy
On Thu, 2007-02-22 at 16:24 +1100, Zhasper wrote: On 22/02/07, Peter Hardy [EMAIL PROTECTED] wrote: I'm a little puzzled by this: total used free sharedbuffers cached Mem:50050844816352 188732 0 1566443165540 -/+

Re: [SLUG] Oddball memory usage?

2007-02-21 Thread Peter Hardy
On Thu, 2007-02-22 at 16:24 +1100, Howard Lowndes wrote: It's recommended that your swap space should be 2x your RAM. In your case it's .2x Has anybody seriously made such a recommendation this millenium? In my experience, the formula doesn't really scale at all. I suppose, in certain