Hello Kame, On Thu, Dec 25, 2014 at 1:15 AM, Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: > On 2014/12/24 23:26, Michael Kerrisk (man-pages) wrote: >> >> On 12/24/2014 01:24 AM, Sven Hoexter wrote: >>> >>> On Tue, Dec 23, 2014 at 04:06:33PM +0100, Michael Kerrisk (man-pages) >>> wrote: >>> >>> Hi, >>> >>>> On 12/14/2014 03:20 PM, Sven Hoexter wrote: >>>>> >>>>> Documented as is in Documentation/filesystems/proc.txt of Linux 3.18. >>>>> >>>>> Signed-off-by: Sven Hoexter <sven@xxxxxxxxxxxxx> >>>>> --- >>>>> man5/proc.5 | 4 ++++ >>>>> 1 file changed, 4 insertions(+) >>>>> >>>>> diff --git a/man5/proc.5 b/man5/proc.5 >>>>> index 96077d0..b16f2a7 100644 >>>>> --- a/man5/proc.5 >>>>> +++ b/man5/proc.5 >>>>> @@ -1587,6 +1587,7 @@ VmStk: 88 kB >>>>> VmExe: 572 kB >>>>> VmLib: 1708 kB >>>>> VmPTE: 20 kB >>>>> +VmSwap: 0 kB >>>>> Threads: 1 >>>>> SigQ: 0/3067 >>>>> SigPnd: 0000000000000000 >>>>> @@ -1672,6 +1673,9 @@ Shared library code size. >>>>> .IR VmPTE : >>>>> Page table entries size (since Linux 2.6.10). >>>>> .IP * >>>>> +.IR VmSwap : >>>>> +Size of swap usage (the number of referred swapents). >>>>> +.IP * >>>>> .IR Threads : >>>>> Number of threads in process containing this thread. >>>>> .IP * >>>> >>>> >>>> Thanks for this patch. I've applied, and added text that the field >>>> appeared in Linux 2.6.34. However, I have a question: what does the >>>> text "(the number of referred swapents)" mean? Is this field >>>> not just reporting a value in kB (i.e., the number of kB across all >>>> swap entries)? >>> >>> >>> I copied the text verbatim from what I found in the proc.txt >>> documentation. To be honest so far I failed to understand >>> what exactly is counted and did not trust the kB unit at all. >>> (It did not matter for my usecase.) >>> >>> Maybe KAMEZAWA Hiroyuki can shed some light on what exactly >>> is counted here and if the kB unit makes sense here and why? >>> >>> Looking at commit b084d4353ff99d824d3bc5a5c2c22c70b1fba722 >>> it seems to be a value incremented/decremented with every >>> page table entry moved to swap/moved out of swap, but I'm >>> far away from claiming that this is stuff I understand. >> >> >> Okay. Pending any input from KAMEZAWA Hiroyuki, I have simply removed >> the text "(the number of referred swapents)". >> > > The counter is > > +1 when a page table entry is modified to refer a swap. > -1 when a page table entry, which referes swap, is modified to some other. > > Then, proc.text says "the number of referred swapents". But this may not be > suitable for man pages. > > How about, "swapped-out virtual memory size" ? Thanks. Amended as you suggest. Cheers, Michael -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
