similar to: Question about : lprofValueProfNodes

Thank you So it does not seem to be relevant for what I’m trying to do. I’m doing something unconventional. The objective is to implement PGO and code coverage on a system that does not exit and does not have any file io, or any of stdc libraries that libclang-profile is using. (more like a kernel) So what I’m trying to do is instead of calling __llvm_profile_write_file () from the application,

What Vedant said -- the profiler runtime provides buffer API for profile dumping. Note that value profiling dumping is not yet supported for buffer API, but since you are using Front-end based instrumentation/profile-use, value profiler is not turned on by default anyway. David On Tue, Dec 19, 2017 at 5:29 PM, Vedant Kumar <vsk at apple.com> wrote: > > On Dec 19, 2017, at 5:16 PM,

Hello, I'm working on Android kernel profile-guided optimization to figure out whether pgo can improve the performance of Android kernel. I have tried to added '-fprofile-generate' option to build Android kernel(msm-4.19). But error occurs during building: "undefined reference to '__llvm_profile_instrument_target'". I have tried to add

I woke up to a frozen box this morning - it froze up a few more times before I got a handle on it. Basically, the box runs idle but refuses to do disk IO, or does it -very- slowly. Top shows processes stuck in 'ffsvget', 'inode', and 'vlruwk' state. I can get the box responsive again by setting sysctl kern.maxvnods=100000. It starts up with kern.maxnodes=36079. I

ZFS works really stable on FreeBSD, but I''m biggest problem is how to control ZFS memory usage. I''ve no idea how to leash that beast. FreeBSD has a backpresure mechanism. I can register my function so it will be called when there are memory problems, which I do. I using it for ARC layer. Even with this in place under heavy load the kernel panics, because memory with KM_SLEEP

Working on the Dell R420 today, got most of it working, even the broadcom ethernet cards! However, I get the following when I reboot the system: Syncing disks, vnodes remaining...4 Sleeping thread (tid 100107, pid 9) owns a non-sleepable lock KDB: stack backtrace of thread 100107: sched_switch() at sched_switch+0x19f mi_switch() at mi_switch+0x208 sleepq_switch() at sleepq_switch+0xfc

Defines XENMEM subop hypercall for PV vNUMA enabled guests and data structures that provide vNUMA topology information from per-domain vnuma topology build info. Signed-off-by: Elena Ufimtseva <ufimtseva@gmail.com> --- Changes since RFC v2: - fixed code style; - the memory copying in hypercall happens in one go for arrays; - fixed error codes logic; --- xen/common/domain.c | 10

> On 12/08/2016 08:45 PM, Li, Liang Z wrote: > > What's the conclusion of your discussion? It seems you want some > > statistic before deciding whether to ripping the bitmap from the ABI, > > am I right? > > I think Andrea and David feel pretty strongly that we should remove the > bitmap, unless we have some data to support keeping it. I don't feel as >

> On 12/08/2016 08:45 PM, Li, Liang Z wrote: > > What's the conclusion of your discussion? It seems you want some > > statistic before deciding whether to ripping the bitmap from the ABI, > > am I right? > > I think Andrea and David feel pretty strongly that we should remove the > bitmap, unless we have some data to support keeping it. I don't feel as >

Hello, I'm trying to investigate and solve some postgres latency spikes that I'm seeing as a result of some behaviour in the syncer. This is with FreeBSD 8.2 (with some local modifications and backports, r231160 in particular). The system has an LSI 9261-8i RAID controller (backed by mfi(4)) and the database and WALs are on separate volumes, a RAID 6 and a RAID 1 respectively. It has

I need some clarification on the FOID handed to zil_commit. I wrote a dscript to watch entry and return of zil_commit_writer. Here is an example output: <pre> 2009 Jan 23 23:34:36: ZIL Commit : Seq 183211310 : FOID 129644 Completed in 0 ms 2009 Jan 23 23:34:36: ZIL Commit : Seq 183211324 : FOID 129644 Completed in 0 ms 2009 Jan 23 23:34:36: ZIL Commit : Seq 183211386

Hi, Since almost all operations in the FUSE low-level API identify files by inode number, I''ve been using zfs_zget() to get the corresponding znode/vnode in order to call the corresponding VFS function in zfs_vnops.c. However, there are some cases when zfs_zget() behaves slightly different than I need: 1) If zp->z_unlinked != 0 then zfs_zget() returns ENOENT. I need it to return

The problem occurs after an update of 8-stable from r248120 to r252111. Sometimes shutdown hangs: Waiting (max 60 seconds) for system process `vnlru' to stop...done Waiting (max 60 seconds) for system process `bufdaemon' to stop...done Waiting (max 60 seconds) for system process `syncer' to stop... Syncing disks, vnodes remaining...0 0 done All buffers synced. >From the kernel

Hi Everyone, I have uploaded a patch that allows one to successfully gather gcov/gcda coverage information on programs which unload shared libraries. It¹s a simple fix, just adding a few COMPILER_RT_VISIBILITY (i.e. __attribute__((visibility("hidden")))) in GCDAProfiling.c. Now, I¹d like to include a test program to demonstrate the fix. AFAICT, there seems to be a single test for

Andre, Are you going to have time to MFC things from -current for auto-tuning -stable before 9.2? I fear (maybe unnecessarily?) that we are about to ship yet another release that can't do basic 10gigE when sufficient memory exists. If you don't have time, then let me know and I'll see what I can do. -- Alfred Perlstein VP Software Engineering, iXsystems

Hi, my FreeBSD-9/stable machine (FreeBSD freebsd-tower.goebo.site 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #2 r241044M: Sat Sep 29 12:52:01 CEST 2012 lbo@freebsd-tower.goebo.site:/usr/obj/usr/src/sys/GENERIC i386) crashes reproducibly when rsync-ing files to an NFSv4 share on the FreeBSD machine. The crash makes the system reboot. The crash creates files in /var/crash which may be obtained

Skipped content of type multipart/mixed-------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 187 bytes Desc: This is a digitally signed message part. Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20080812/04e0e065/attachment-0001.pgp

Its been looking like this pretty much all day ... top shows nothing major, and the drive looks reaonably quiet ... there is nothing in messages to indicate a problem that I can see (even those enclosure messages have been reasonably quiet) ... What consumes SYS CPU? Stuff like apache and jakarta-tomcat use up USER CPU, correct? neptune# iostat 5 tty aacd0 pass0

By default FreeBSD 7.0 shipped with the sysctls set to: kern.maxfiles: 12328 kern.maxfilesperproc: 11095 We recently bumped up against these limits in an unfortunate way and we are going to raise them. I have some questions: * why are the numbers set the way they are? They aren't round numbers, they aren't powers of 2. But they were arrived at somehow with planning and thought

Hi, guys, I have add devid support for EFI, (not putback yet) and test it with a zfs mirror, now the mirror can recover even a usb harddisk is unplugged and replugged into a different usb port. But there is still something need to improve. I''m far from zfs expert, correct me if I''m wrong. First, zfs should sense the hotplug event. I use zfs status to check the status of the