| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <Pine.LNX.4.64.0705100819070.17907@alien.or.mcafeemobile.com> Date: Thu, 10 May 2007 08:22:51 -0700 (PDT) From: Davide Libenzi <davidel@...ilserver.org> To: Andi Kleen <andi@...stfloor.org> cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, William Lee Irwin III <wli@...omorphy.com> Subject: Re: [patch 1/4] KMON - kmon device/instrumentation ... On Thu, 10 May 2007, Andi Kleen wrote: > Davide Libenzi <davidel@...ilserver.org> writes: > > > This patch serie introduces a way to log high frequency/volume data > > out of the kernel. Logging scheduler operations for example, with > > loads that generate tenths of thousands of context switches per second > > (possibly from multiple CPUs), can overload the kernel printk. Also, > > logging in binary form helps in reducing the size of the logged data > > that is tranfered from kernel to userspace. The kmon logger uses per > > CPU buffers (rings) that are flushed at a given frequency to all the > > instances of the kmon devices. > > Sounds like you reinvented relayfs? (and ktrace before that) I simply didn't know about relayfs ;) Randy told me when I posted those, that BTW were never intended for merging. The buffering method used is more similar to oprofile though. - Davide - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists