$vi mem
#!/bin/bash
uprog ()
{
sleep 60
}
count=0
while [ "$count" -lt 10000000 ] ; do
uprog &
echo $count
clear
count=`expr $count + 1`
done
$chmod +x mem
$./mem
Note :
It suppose to eat all the memory and when there is no memory left start
with the swap... but it shouldn't kill the system, if everything is ok.
I tested my own system with this and never happened a crash... also try
to keep the script until it reaches like 3000 or so and Ctrl+C and you
will start to see a decrees of memory usage and cache is freeing up,
but its temporary until the kernel will start again caching the memory.
Like all the guys said before, the Linux kernel works this way, if you
client or whatever needs to know "Why?" take a tour of the Linux
kernel, how it does the memory management and I think it will be
explained there.
B.Sadhiq
--- On Fri, 26/3/10, Thiyagarajan A <thiyagu...@yahoo.co.in> wrote:
From: Thiyagarajan A <thiyagu...@yahoo.co.in>
Subject: [Linux_Mantra] How to clear cache in RHEL 4 Update 5
To: Linux_Mantra@yahoogroups.com, linuxki...@yahoogroups.com
Date: Friday, 26 March, 2010, 11:14 AM
Hello Frnds,
I wanted to clear the cache in RHEL 4 Update5. I tried this command "echo 3 >
/proc/sys/vm/ drop_cache" for clearing the cache but when i check in vm folder
there is no file "drop_caches" . so some one can guide me how i can clear the
cache. is there any other way???
please find the meminfo command output.
MemTotal: 8306084 kB
MemFree: 315312 kB
Buffers: 59416 kB
Cached: 7583024 kB
SwapCached: 0 kB
Active: 1027876 kB
Inactive: 6803632 kB
HighTotal: 7466304 kB
HighFree: 186560 kB
LowTotal: 839780 kB
LowFree: 128752 kB
SwapTotal: 8193108 kB
SwapFree: 8192900 kB
Dirty: 236 kB
Writeback: 0 kB
Mapped: 227896 kB
Slab: 133872 kB
CommitLimit: 12346148 kB
Committed_AS: 301720 kB
PageTables: 3744 kB
VmallocTotal: 106488 kB
VmallocUsed: 6240 kB
VmallocChunk: 99840 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB
So please let me know the command for clearing it. Thanks in advance.
Thanks & Regards
Thiyagarajan. A
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