RedHat 7.2 with 2.4.18-18.7.xbigmem using RedHat's software RAID package.
I've been seeing quite a bit of page in/page out going on, and have been looking around.
With the 2.4 kernel, when would one expect to see swap usage? I'm assuming the 2.4 memory works a bit like Solaris where one should expect to see physical memory usage relatively high, and that's a good/normal thing, but I don't see any swap utilization at all, which concerns me. I may have misconfigured something...
How can I pin-point, if possible, whether the paging is related to the use of software RAID?
Marco
# more raidtab
raiddev /dev/md0
raid-level 0
nr-raid-disks 2
persistent-superblock 1
chunk-size 32
device /dev/sdc1
raid-disk 0
device /dev/sdd1
raid-disk 1
# free
total used free shared buffers cached
Mem: 3874464 3843256 31208 0 381844 3084184
-/+ buffers/cache: 377228 3497236
Swap: 2048248 0 2048248
# sar -r
Linux 2.4.18-18.7.xbigmem 05/29/2003
12:00:00 AM kbmemfree kbmemused %memused kbmemshrd kbbuffers kbcached kbswpfree kbswpused %swpused
12:10:00 AM 33956 3840508 99.12 0 381020 3085476 2048248 0 0.00
# swapon -s
Filename Type Size Used Priority
/dev/sda6 partition 2048248 0 -1
# more /etc/fstab
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
none /dev/pts devpts gid=5,mode=620 0 0
LABEL=/home /home ext3 defaults 1 2
none /proc proc defaults 0 0
none /dev/shm tmpfs defaults 0 0
LABEL=/tmp /tmp ext3 defaults 1 2
LABEL=/usr /usr ext3 defaults 1 2
LABEL=/var /var ext3 defaults 1 2
/dev/md0 /hosting ext3 defaults,usrquota 0 0
/dev/sda6 swap swap defaults 0 0
/dev/cdrom /mnt/cdrom iso9660 noauto,owner,kudzu,ro 0
0
/dev/fd0 /mnt/floppy auto noauto,owner,kudzu 0 0
# sar -B
Linux 2.4.18-18.7.xbigmem 05/29/2003
12:00:00 AM pgpgin/s pgpgout/s activepg inadtypg inaclnpg inatarpg ...
Average: 0.02 55.34 561672 225090 115799 180512
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