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The easy way to know if there has been any paging space activity is to use vmstat -s and look for these lines:
Mine are zero because I have rebooted recently, after applying a patch.
FYI: If you see values here that are not equal to zero - it is "normal" when the out values are (much) larger than the in values - when in values are larger - this implies that you really need more memory - because pages are being read in, and freed again before they can be modified (page space page outs are only modified pages, unmodified they just get freed - i.e., no page space out).
The tools mentioned above are for watching behavior in real time. This is historical data - compare delta daily e.g., for 24 hour stats.
re: lrud (least recently used daemon, aka page stealer) - the lrud watches memory limits per memory pool - so you can have a lot of page stealer activity even with 20% of memory free (according to nmon/vmstat/topas) if only one pool is consumed.
Hi, i have 2 identical web servers using AIX. I use nmon analyser to check their performance.
The server A exceeds 20% memory usage for system, 5% for cache and the rest 75% for processes. While, it uses 4% of Paging Space.
The server B exceeds 20% for system, 45% for cache and 35% for processes.... (24 Replies)
Hello,
Am working on small program that used to calculate the memory usage of AIX servers. Am using svmon -G command to get the memory usage. For example, consider the following output.
$ svmon -G
size inuse free pin virtual mmode
memory ... (9 Replies)
Hi,
I have AIX 5.3TL8 two node cluster using HACMP and have 10g database using RAW devices. I am seeing gradual increase in comp% memory everyday and it reaches 100% and evicts the node, we had 4 evictions in 40days.
I am pasting vmstat and vmo output, anyone seen this issue?
... (5 Replies)
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Hi,
We have AIX 5.1 machine of RAM 8 GB and paging space is 8GB. we are getting high memory usage of almost 99%.Can anybody please help in this ?
Partial vmstat o/p
kthr memory
----- -----------
r b avm fre
2 1 278727 1143
There is no paging issue.Becoz in... (5 Replies)
Hi All,
I have a question, can you guys please help me by giving your valuable suggestons:
I am using AIX 5L, running oracle 7 version. I need to increase the oracle memory to 40 MB more. Currently Oracle occupies 260M. I wanted to know whether I can increase the memory without any problem.... (3 Replies)
Hi All,
I have a question, can you guys please help me by giving your valuable suggestons:
I am using AIX 5L, running oracle 7 version. I need to increase the oracle memory to 40 MB more. Currently Oracle occupies 260M. I wanted to know whether I can increase the memory without any problem.... (1 Reply)