* Fwd: how to debug kernel in qemu using ubuntu image [not found] <mailman.158.1305555215.2682.kernelnewbies@kernelnewbies.org> @ 2011-05-16 15:56 ` Vikram Narayanan 2011-05-16 18:26 ` Amirali Shambayati 0 siblings, 1 reply; 3+ messages in thread From: Vikram Narayanan @ 2011-05-16 15:56 UTC (permalink / raw) To: kernelnewbies > Hello all, > > I asked my question in "linux kernel" mailing list, and I was > suggested to forward it to this mailing list. > > I'm using linux-0.2.img image(which is a light linux image) to debug > kernel using Qemu. I'm working on IO schedulers' optimization. As Qemu > boots kernel, IO scheduler sends read requests to disk. Also by > entering commands such as 'ls', it sends read requests. I'm looking > for a way to send write requests. Thus I thought that using a > benchmark which sends both read and write requests, is suitable, but > as linux-0.2.img is a very simple and light image, it is almost > impossible to setup heavy benchmarks on it. So I want to use an ubuntu > image instead. But I don't know where I should see kernel printks. kernel printk's can be seen from the dmesg output. Just type dmesg in your shell. You can also see that in /var/log/syslog Hope it helps, Vikram ^ permalink raw reply [flat|nested] 3+ messages in thread
* Fwd: how to debug kernel in qemu using ubuntu image 2011-05-16 15:56 ` Fwd: how to debug kernel in qemu using ubuntu image Vikram Narayanan @ 2011-05-16 18:26 ` Amirali Shambayati 0 siblings, 0 replies; 3+ messages in thread From: Amirali Shambayati @ 2011-05-16 18:26 UTC (permalink / raw) To: kernelnewbies That was helpful, thanks a lot. On Mon, May 16, 2011 at 8:26 PM, Vikram Narayanan <vikram186@gmail.com> wrote: >> Hello all, >> >> I asked my question in "linux kernel" mailing list, and I was >> suggested to forward it to this mailing list. >> >> I'm using linux-0.2.img image(which is a light linux image) to debug >> kernel using Qemu. I'm working on IO schedulers' optimization. As Qemu >> boots kernel, IO scheduler sends read requests to disk. Also by >> entering commands such as 'ls', it sends read requests. I'm looking >> for a way to send write requests. Thus I thought that using a >> benchmark which sends both read and write requests, is suitable, but >> as linux-0.2.img is a very simple and light image, it is almost >> impossible to setup heavy benchmarks on it. So I want to use an ubuntu >> image instead. But I don't know where I should see kernel printks. > kernel printk's can be seen from the dmesg output. > Just type dmesg in your shell. > You can also see that in /var/log/syslog > > Hope it helps, > Vikram > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies at kernelnewbies.org > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran ^ permalink raw reply [flat|nested] 3+ messages in thread
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* Fwd: how to debug kernel in qemu using ubuntu image [not found] <BANLkTimS++GWcNSBNqwZ=cUtQwX1wdKzUQ@mail.gmail.com> @ 2011-05-16 6:40 ` Amirali Shambayati 0 siblings, 0 replies; 3+ messages in thread From: Amirali Shambayati @ 2011-05-16 6:40 UTC (permalink / raw) To: kernelnewbies ---------- Forwarded message ---------- From: Amirali Shambayati <amirali.shambayati@gmail.com> Date: Tue, May 10, 2011 at 3:11 PM Subject: how to debug kernel in qemu using ubuntu image To: Linux Kernel <linux-kernel@vger.kernel.org> Hello all, I asked my question in "linux kernel" mailing list, and I was suggested to forward it to this mailing list. I'm using linux-0.2.img image(which is a light linux image) to debug kernel using Qemu. I'm working on IO schedulers' optimization. As Qemu boots kernel, IO scheduler sends read requests to disk. Also by entering commands such as 'ls', it sends read requests. I'm looking for a way to send write requests. Thus I thought that using a benchmark which sends both read and write requests, is suitable, but as linux-0.2.img is a very simple and light image, it is almost impossible to setup heavy benchmarks on it. So I want to use an ubuntu image instead. But I don't know where I should see kernel printks. Thanks in advance Regards, -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran -- Amirali Shambayati Bachelor Student Computer Engineering Department Sharif University of Technology Tehran, Iran ^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-05-16 15:56 ` Fwd: how to debug kernel in qemu using ubuntu image Vikram Narayanan
2011-05-16 18:26 ` Amirali Shambayati
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2011-05-16 6:40 ` Amirali Shambayati
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