Now, mbuf is disabled by default so it can not be used when
some Pods need it. For example, some process have a long sys
with no reason, if mbuf and sli is ready, key stack info may
be recorded. sli can be open during Pods lifecycle, buf mbuf needs
recreate cgroup so as to alloc mbuf memory for it. So, we open mbuf
default.
Default mbuf memory is 2M and supported 512 cgroups, each cgroup has 4K
memory, which is not enough in some case. So just adjust it to 8M.
Signed-off-by: bauerchen <bauerchen@tencent.com>
When a process is running in the system space, it cann't be preempted until
it return to userspace, even if the process should be reschedule and other
process was ready to run(because the server system close the kernel preempt
by default). This schedule delay may impact the performance of waiting process,
therefor we introduce the longsys check to collect the schedule delay information
of process. The longsys indication could help us spot the possible performance
jitter in the system.
Signed-off-by: Munger jiang <mungerjiang@tencent.com>
Signed-off-by: Bin Lai <robinlai@tencent.com>
Reviewed-by: benbjiang<benbjiang@tencent.com>
Reviewed-by: Bauerchen <bauerchen@tencent.com>
Providing back up buffer for Quality Monitor, can be used to catch key
context when abnormal jitters occur. And application can also use it
to detect system env exception.
Signed-off-by: Bauerchen <bauerchen@tencent.com>
Reviewed-by: Jiang Biao <benbjiang@tencent.com>
Reviewed-by: Bin Lai <robinlai@tencent.com>
Menglong Dong