11-19-2008
configurations
>output of sysdef
NAME VALUE
acctresume 4
acctsuspend 2
allocate_fs_swapmap 0
bufpages 416197
create_fastlinks 0
dbc_max_pct 50
dbc_min_pct 5
default_disk_ir 0
dskless_node 0
eisa_io_estimate 768
eqmemsize 46
file_pad 10
fs_async 0
hpux_aes_override 0
maxdsiz 262144
maxdsiz_64bit 524288
maxfiles 60
maxfiles_lim 1024
maxssiz 32768
maxssiz_64bit 262144
maxswapchunks 16384
maxtsiz 16384
maxtsiz_64bit 262144
maxuprc 3686
maxvgs 10
msgmap 4095
nbuf 673506
ncallout 7200
ncdnode 150
ndilbuffers 30
netisr_priority -1
netmemmax 0
nfile 63890
nflocks 4096
ninode 35016
no_lvm_disks 0
nproc 4096
npty 60
nstrpty 60
nswapdev 10
nswapfs 10
public_shlibs 1
remote_nfs_swap 0
rtsched_numpri 32
sema 0
semmap 4095
shmem 0
shmmni 1024
streampipes 0
swapmem_on 1
swchunk 2048
timeslice 10
unlockable_mem 16584
>how much RAM
8 Gb
>what kind of disks are attached
SCSI with fiber cable
>what is the output of swapinfo -tam,
(during performance ok)
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI
dev 12000 1012 10988 8% 0 - 1
reserve - 5081 -5081
memory 6285 1906 4379 30%
total 18285 7999 10286 44% - 0 -
(do I need to check it again during bad performance?)
>What is the size of the SGA
Fixed Size 740,232
Variable Size 738,197,504
Database Buffers 1,610,612,736
Redo Buffers 1,323,008
Total (SGA) 2,350,873,480
Thanks.
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LEARN ABOUT CENTOS
approx-gc
APPROX-GC(8) System Manager's Manual APPROX-GC(8)
NAME
approx-gc - garbage-collect the cache of Debian archive files
SYNOPSIS
approx-gc [OPTION]...
DESCRIPTION
approx-gc scans the cache created by approx(8) and finds files that are corrupted or no longer needed. With no options specified, these
files are listed on standard output and removed from the cache.
A corrupted file is one whose size or checksum does not match the value specified in the Packages or Sources file.
An unneeded file is one that is not referenced from any distribution's Packages or Sources file.
approx-gc may take several minutes to finish.
OPTIONS
-c file, --config file
Specify an additional configuration file. May be used multiple times.
-f, --fast
Don't perform checksum validation.
-k, --keep, -s, --simulate
Don't remove files from the cache.
-q, --quiet
Don't print file names.
-v, --verbose
Print the reason for removal of each file.
EXAMPLES
To remove all unneeded or corrupted files from the cache:
approx-gc --quiet
This is run as a weekly cron(8) job.
To list the files that would be removed from the cache, without actually doing so:
approx-gc --keep
FILES
/etc/approx/approx.conf
Configuration file for approx and related programs.
/var/cache/approx
Default cache directory for archive files.
SEE ALSO
approx.conf(5), approx(8), cron(8)
AUTHOR
Eric Cooper <ecc@cmu.edu>
May 2011 APPROX-GC(8)