Red Hat Bugzilla – Bug 143673
Excessive swapping related to disk cache usage
Last modified: 2007-11-30 17:07:05 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.3) Gecko/20040910 Description of problem: After installing the U4 updated kernel swapping is still present after 24 hours of use. This is a low load counter-strike and teamspeak server. Cpu usage never goes above 10% except for webmin sessions. as per the url linking to the closed bug this bug is not yet resolved. I have used the echo command noted in the closed bug but some minor swapping is still occurring. This is a p-4 1.4 ghz machine with 384 megs of ram. Here is my free: total used free shared buffers cached Mem: 382472 369116 13356 0 69256 202620 -/+ buffers/cache: 97240 285232 Swap: 522072 1000 521072 top: 13:53:52 up 1 day, 3:50, 1 user, load average: 0.00, 0.00, 0.00 48 processes: 47 sleeping, 1 running, 0 zombie, 0 stopped CPU states: cpu user nice system irq softirq iowait idle total 0.0% 0.0% 0.0% 0.9% 0.0% 0.0% 99.0% Mem: 382472k av, 369116k used, 13356k free, 0k shrd, 69256k buff 262200k actv, 63964k in_d, 7796k in_c Swap: 522072k av, 1000k used, 521072k free 202620k cached Version-Release number of selected component (if applicable): kernel-2.4.21-27.EL How reproducible: Always Steps to Reproduce: 1. Let the server run Additional info:
Swapping 1MB doesn't seem excessive to me. Are you actually seeing performance problems or are the remnants of this bug mostly cosmetic ?
This is just something to watch. Right now it is cosmetic. I have this and another box i use. The other is a samba server. I can load it up and see if the swapping goes wacky.
The swap usage is going up..albeit much more slowly than before the errata. This is for the p-4 mentioned previously: 15:24:28 up 2 days, 5:21, 1 user, load average: 0.20, 0.11, 0.03 49 processes: 47 sleeping, 2 running, 0 zombie, 0 stopped CPU states: cpu user nice system irq softirq iowait idle total 14.8% 0.0% 0.0% 1.4% 0.4% 0.0% 83.4% Mem: 382472k av, 377460k used, 5012k free, 0k shrd, 49564k buff 288388k actv, 54068k in_d, 7748k in_c Swap: 522072k av, 5628k used, 516444k free 221168k cached
ok never mind the swap is now down to 212k.