On Tue, Sep 11, 2012 at 10:54:51AM +0800, Gao feng wrote:
with this patch,container's meminfo will be shown based on containers' mem cgroup.
Right now,it's impossible to virtualize all values in meminfo, I collect some values such as MemTotal,MemFree,Cached,Active, Inactive,Active(anon),Inactive(anon),Active(file),Inactive(anon), Active(file),Inactive(file),Unevictable,SwapTotal,SwapFree.
if I miss something, please let me know.
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com> +int virLXCCgroupGetMeminfo(unsigned long long *meminfo) +{ + int ret; + virCgroupPtr cgroup; + + ret = virCgroupGetAppRoot(&cgroup); + if (ret < 0) { + virReportSystemError(-ret, "%s", + _("Unable to get cgroup for container")); + return ret; + } + + ret = virLXCCgroupGetMemStat(cgroup, meminfo); + if (ret < 0) { + virReportSystemError(-ret, "%s", + _("Unable to get memory cgroup stat info")); + goto out; + } + + ret = virLXCCgroupGetMemTotal(cgroup, &meminfo[MEMTOTAL]); + if (ret < 0) { + virReportSystemError(-ret, "%s", + _("Unable to get memory cgroup total")); + goto out; + } + + ret = virLXCCgroupGetMemUsage(cgroup, &meminfo[MEMUSAGE]); + if (ret < 0) { + virReportSystemError(-ret, "%s", + _("Unable to get memory cgroup stat usage")); + goto out; + } + + ret = virLXCCgroupGetMemSwapTotal(cgroup, &meminfo[SWAPTOTAL]); + if (ret < 0) { + virReportSystemError(-ret, "%s", + _("Unable to get memory cgroup stat swaptotal")); + goto out; + } + + ret = virLXCCgroupGetMemSwapUsage(cgroup, &meminfo[SWAPUSAGE]); + if (ret < 0) { + virReportSystemError(-ret, "%s", + _("Unable to get memory cgroup stat swapusage")); + goto out; + }
When I tested these patches on a 3.4 kernel, these last two calls always fail because the corresponding cgroup file does not exist. I had to remove them to make this work at all.
+ + ret = 0; +out: + virCgroupFree(&cgroup); + + return ret; +}
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