From: Petr Vorel <pvorel@suse.cz>
To: ltp@lists.linux.it
Subject: [LTP] [PATCH] Unshare KSM pages before setting max_page_sharing
Date: Wed, 4 Dec 2019 11:46:55 +0100 [thread overview]
Message-ID: <20191204104655.GA3852@dell5510> (raw)
In-Reply-To: <b4489aba-9f59-ff44-e2b3-3af6d9cd3cb1@suse.cz>
Hi,
> > BTW at least ksm01 will fail on VM host with running VMs,
> > but that's another story not related to this patch.
> > mem.c:251: FAIL: pages_shared is not 1 but 3629.
> > mem.c:251: FAIL: pages_sharing is not 98302 but 113789.
> > mem.c:251: FAIL: pages_volatile is not 0 but 12.
> > mem.c:251: FAIL: pages_unshared is not 1 but 48519.
> I'm aware of other KSM tests failing but the failures are rare and quite
> random so they'll be tricky to debug. The snippet you've sent looks like
> interference from another process running on the same VM but the
> failures I see in OpenQA look like some sort of race condition in kernel
> itself.
Yep, my failures are for sure different. I run the test on my workstation
(KVM host), after start of about 15 VMs. Before test was ok.
I haven't tested, but it should be ok when running on KVM guests.
Kind regards,
Petr
prev parent reply other threads:[~2019-12-04 10:46 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 16:31 [LTP] [PATCH] Unshare KSM pages before setting max_page_sharing Martin Doucha
2019-11-29 6:49 ` Li Wang
2019-12-02 3:29 ` Petr Vorel
2019-12-02 3:57 ` Li Wang
2019-12-04 9:07 ` Martin Doucha
2019-12-04 10:46 ` Petr Vorel [this message]
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