Comment 769 for bug 500069
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#769 |
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35a32c5
(Get the code!)
(In reply to comment #608)
> Ritesh: if you have some test cases then discuss them on the linux-mm list.
Alan, I see in the prev comments you have the same explanation done in the right technical terms. :-)
I just would add 1 more comment. All these symptoms were tested and seen also on my lab machine, which is:
> 2 core CPU
> 8 GiB RAM (We have tested also with 48 GiB RAM)
> All tests were done with SAN Array (over sw iSCSI).
The slow rotating media can be mapped with the slow network in this case. The stalls were visible on these machines also after you do buffered I/O consuming up all of the system RAM.
I had then spent some time tweaking values in /proc/sys/vm but hadn't seen great improvements.
Will surely put in my results on -mm in the next run I do on it (could be in some weeks). Thank you.