SUMMARY: Swap space ??

From: Gary Menna <G.Menna_at_isu.usyd.edu.au>
Date: Thu, 05 Aug 1999 09:16:37 +1000 (EST)

HI All ,
        Below is the original question .
        Thanks to all the people who wrote .
        It's um , only after I have read everything
        including the archives , and done all the math
        and things don't add up will I write to this list .
        I wasn't very clear . These systems are very
        boring and very static ; eg. if the root file system
        goes up 1% , we all get together and throw a party .
        Public Service , exciting hey !! .
        I traced the problem with the swap space back
        to a "hung" database , and a job scheduler .
        A reboot eventually sorted everything out .
        The swap space now sits on 24% reserved where it
        has sat and sulked for the last couple of years .


On Tue, 3 Aug 1999, Gary Menna wrote:

> Ver 4.0B P3 A4100 3 x 5/600 2GB mem 3493MB swap
>
> Hi All ,
> Couple of things . swapon -s shows :
>
> Swap partition /dev/re0b (default swap):
> Allocated space: 447159 pages (3493MB)
> In-use space: 1 pages ( 0%)
> Free space: 447158 pages ( 99%)
>
>
> Total swap allocation:
> Allocated space: 447159 pages (3493MB)
> Reserved space: 382255 pages ( 85%)
> In-use space: 1 pages ( 0%)
> Available space: 64904 pages ( 14%)
>
>
> The reserved space is 85 % .
> Any idea why it would be so high .
> I always have 300+MB of memory to spare .
> I have a few identical systems , the others
> use no more than 35 % .
> These systems are used to run a 2 engine sybase
> dataserver . Also as shown with top , only on this machine
> the dataserver is started up with a static 900
> MB and only grabs 1.6 MB ??
> The 2 engines do not grab 900 each , it just looks like
> it .
>
>
> PID USERNAME PRI NICE SIZE RES STATE TIME CPU COMMAND
> 15428 sybase 53 0 909M 1744K run 146.2H 98.70% dataserver
> 15400 sybase 52 0 909M 1605K run 158.9H 80.30% dataserver
>
>
> procs memory pages
> r w u act free wire fault
> 5140 36 186K 41K 28K 133M
> 6139 36 187K 40K 28K 614
> 5140 36 187K 40K 28K 323
>
>
>
> Thanking you ,
>
> Gary Menna E-Mail g.menna_at_isu.usyd.edu.au
> Information Technology Services Phone +61 2 9351-6360
> University of Sydney (G05) Fax +61 2 9351-7711
>
>
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Received on Wed Aug 04 1999 - 23:18:43 NZST

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