Are you using the hugemem kernel ??! On 3/16/07, Troy Knabe <knabe@xxxxxxxxxxx> wrote:
I use Red Hat AS 4 and Oracle Cluster Services and we installed everything on a NetApp Filer and mounted even the CRS directory via NFS. I have 2 bonded 1Gig NICs to a cluster of 2 Filer Heads. We actually lost the primary filer head one day and Oracle never missed a beat. I came from a SAN environment and was very skeptical of NAS. We have had a couple of Super Secret Oracle issues that we have run into, that we had to open a support case for, but stability and performance have been great. Do you mind if I ask what manufacturer you are running? I am running Sun x4100's. -Troy ----- Original Message ----- From: qua nong <quanong_os@xxxxxxxxx> Date: Thursday, March 15, 2007 9:50 pm Subject: Re: RHEL 4 - Memory Problem To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Hi, > > Below is the output of free > > # free > total used free shared buffers cached > Mem: 16360260 > 16197904 162356 0 256496 14974144 > -/+ buffers/cache: 967264 15392996 > Swap: 33551744 > 186960 33364784 > > May I also ask you that as you mentioned that you run Oracle RAC > on linux box. Do you use RHEL3 cluster or 4, GFS or OCFS ? > > Qua > > > ----- Original Message ---- > From: Troy Knabe <knabe@xxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Sent: Friday, March 16, 2007 3:20:02 PM > Subject: Re: RHEL 4 - Memory Problem > > Try running the command "free" I think, although I don't > know why and would love for someone on this list to answer this > question that this is a better actual representation of the free > memory on the box. > > I am running the same config as you, only 3 boxes with 8 gig of > RAM each and Oracle RAC. > > My hunch is that top and vmstat are showing the actual memory > locations that are empty, where a "free" command shows the > memory addresses that while may have something in them, are able > to be recycled and used. > > Can someone verify that I am right or way off base? > > Thanks > -Troy > > > ----- Original Message ----- > From: qua nong <quanong_os@xxxxxxxxx> > Date: Thursday, March 15, 2007 9:02 pm > Subject: RHEL 4 - Memory Problem > To: redhat-list@xxxxxxxxxx > > > Hi list, > > > > We have a AMD with RHEL4 64 installed and the Oracle 10g > > installed as well. > > It has the latest kernel update 2.6.9-42.0.8.ELsmp but > the > > memory is always being used by some unexplained processes. > > > > There are 4 CPUs, 16 GB RAM, 33GB swap but memory used = 16148872k > > > > Even when oracle is shutdown, a memory use is > still > > nearly 16GB. CPU is 99.4 % in idle, and I/O is too quiet. This > > is quite difficult to explain. > > > > Could anyone have any idea ? > > > > Here is the display of the top command > > > > top - 14:57:33 up 30 days, 22:29, 3 users, load > > average: 0.22, 0.10, 0.02 > > Tasks: 121 total, 1 running, 120 > > sleeping, 0 stopped, 0 zombie > > Cpu(s): 0.0% us, 0.0% sy, 0.0% ni, 99.4% > > id, 0.6% wa, 0.0% hi, 0.0% si > > Mem: 16360260k total, 16198280k used, > 161980k > > free, 256496k buffers > > Swap: 33551744k total, 186960k used, 33364784k > free, > > 14973940k cached > > > > vmstat 2 > > procs -----------memory---------- ---swap-- -----io---- -- > system- > > - ----cpu---- > > r b swpd free > > buff cache si > so > > bi bo in cs us > > sy id wa > > 0 0 186960 161420 256496 > 14973940 > > 0 0 1 > > 112 3 1 > 0 > > 0 99 1 > > 0 0 186960 162284 256496 > 14973940 > > 0 0 0 > 170 > > 1021 2162 0 0 100 0 > > 0 0 186960 162276 256496 > 14973940 > > 0 0 > > 0 44 1009 2149 0 0 > 100 0 > > 0 0 186960 162284 256496 > 14973940 > > 0 0 > > 0 42 1008 2244 0 0 > 99 0 > > 0 0 186960 162292 256496 > 14973940 > > 0 0 > > 0 48 1011 2164 0 0 > 99 0 > > 0 0 186960 162292 256496 > 14973940 > > 0 0 > > 0 56 1006 2118 0 0 > 100 0 > > 0 0 186960 162292 256496 > 14973940 > > 0 0 > > 0 66 1011 2154 0 0 > 98 2 > > > > > > > > cat /proc/meminfo > > MemTotal: 16360260 kB > > MemFree: 162740 kB > > Buffers: 256496 kB > > Cached: 14973940 kB > > SwapCached: 9724 kB > > Active: 2709340 kB > > Inactive: 12799980 kB > > > HighTotal: 0 kB > > > HighFree: 0 kB > > LowTotal: 16360260 kB > > LowFree: 162740 kB > > SwapTotal: 33551744 kB > > SwapFree: 33364784 kB > > > Dirty: 332 kB > > Writeback: 140 kB > > Mapped: 1147256 kB > > > Slab: 608056 kB > > CommitLimit: 41731872 kB > > Committed_AS: 7853044 kB > > PageTables: 39080 kB > > VmallocTotal: 536870911 kB > > VmallocUsed: 16760 kB > > VmallocChunk: 536854071 kB > > HugePages_Total: 0 > > HugePages_Free: 0 > > Hugepagesize: 2048 kB > > > > > > > > > > > > > > > > > > > > > ____________________________________________________________________________________> Never miss an email again! > > Yahoo! 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