On Thu, Jan 3, 2013 at 6:50 AM, Andreas Färber <afaerber@xxxxxxx> wrote: > >> The culprit seems to be when the process runs out of virtual address >> space on 32-bit systems due to some subsystem (virtio?) creating a >> large number of pthreads under heavy workloads. >> >> Unfortunately my QEMU expertise is too limited to pin-point the exact >> fix, nor do I have resources right now to go into it, but I wanted to >> raise this issue and spread general awareness. >> >> Is this a known issue or something that needs to be tracked/documented at least? > > It is a known issue that I reported long ago, but there have been higher > priorities. ;) > Note that this failure is not specifically about creating threads but > about thread creation being one of severa hmmm, tried to look at the output of configure, and it does give me this: coroutine backend ucontext running qemu-system-arm in GDB outputs this when doing disk IO (like untar'ing a kernel tree): [New Thread 0x5045b470 (LWP 6184)] [New Thread 0x4f148470 (LWP 6185)] [New Thread 0x4e6ff470 (LWP 6186)] [New Thread 0x49af5470 (LWP 6187)] [New Thread 0x492f5470 (LWP 6188)] [New Thread 0x48af5470 (LWP 6189)] [New Thread 0x482f5470 (LWP 6190)] [New Thread 0x47af5470 (LWP 6191)] [New Thread 0x472f5470 (LWP 6192)] [New Thread 0x46af5470 (LWP 6193)] [New Thread 0x462f5470 (LWP 6194)] [New Thread 0x45af5470 (LWP 6195)] [New Thread 0x452f5470 (LWP 6196)] [New Thread 0x44af5470 (LWP 6197)] [New Thread 0x442f5470 (LWP 6198)] [New Thread 0x43af5470 (LWP 6199)] [New Thread 0x432f5470 (LWP 6200)] [New Thread 0x42af5470 (LWP 6201)] [New Thread 0x422f5470 (LWP 6202)] [New Thread 0x41af5470 (LWP 6203)] [New Thread 0x412f5470 (LWP 6204)] [New Thread 0x40af5470 (LWP 6205)] [New Thread 0x402f5470 (LWP 6206)] [New Thread 0x3faf5470 (LWP 6207)] [New Thread 0x3f2f5470 (LWP 6208)] [New Thread 0x3eaf5470 (LWP 6209)] [New Thread 0x3e2f5470 (LWP 6210)] [New Thread 0x3daf5470 (LWP 6211)] [New Thread 0x3d2f5470 (LWP 6212)] [New Thread 0x3caf5470 (LWP 6213)] [New Thread 0x3c2f5470 (LWP 6214)] [New Thread 0x3baf5470 (LWP 6215)] [New Thread 0x3b2f5470 (LWP 6216)] [New Thread 0x3aaf5470 (LWP 6217)] [New Thread 0x3a2f5470 (LWP 6218)] [New Thread 0x39af5470 (LWP 6219)] [New Thread 0x392f5470 (LWP 6220)] [New Thread 0x38af5470 (LWP 6221)] [New Thread 0x380ff470 (LWP 6222)] [New Thread 0x378ff470 (LWP 6223)] [New Thread 0x366f7470 (LWP 6224)] [New Thread 0x339d2470 (LWP 6225)] [New Thread 0x331d2470 (LWP 6226)] [New Thread 0x36eff470 (LWP 6227)] [New Thread 0x35ef7470 (LWP 6228)] [New Thread 0x356f7470 (LWP 6229)] [New Thread 0x329d2470 (LWP 6230)] [New Thread 0x321d2470 (LWP 6231)] [New Thread 0x4bff9470 (LWP 6232)] [New Thread 0x349f2470 (LWP 6234)] [New Thread 0x305be470 (LWP 6235)] [New Thread 0x2fdbe470 (LWP 6236)] [New Thread 0x2f5be470 (LWP 6237)] [New Thread 0x4afe9470 (LWP 6238)] [New Thread 0x2edbe470 (LWP 6239)] [New Thread 0x2e5be470 (LWP 6240)] [New Thread 0x2ddbe470 (LWP 6241)] [New Thread 0x2d5be470 (LWP 6243)] [New Thread 0x2cdbe470 (LWP 6244)] [Thread 0x442f5470 (LWP 6198) exited] [Thread 0x4f948470 (LWP 6173) exited] [Thread 0x3e2f5470 (LWP 6210) exited] [Thread 0x35ef7470 (LWP 6228) exited] [Thread 0x452f5470 (LWP 6196) exited] [Thread 0x51d5c470 (LWP 6171) exited] [Thread 0x462f5470 (LWP 6194) exited] [Thread 0x2fdbe470 (LWP 6236) exited] [Thread 0x2edbe470 (LWP 6239) exited] [Thread 0x356f7470 (LWP 6229) exited] [Thread 0x482f5470 (LWP 6190) exited] [Thread 0x45af5470 (LWP 6195) exited] [Thread 0x4bff9470 (LWP 6232) exited] [Thread 0x36eff470 (LWP 6227) exited] [Thread 0x2ddbe470 (LWP 6241) exited] [Thread 0x4afe9470 (LWP 6238) exited] [Thread 0x305be470 (LWP 6235) exited] [Thread 0x5045b470 (LWP 6184) exited] [Thread 0x339d2470 (LWP 6225) exited] [Thread 0x3baf5470 (LWP 6215) exited] [Thread 0x47af5470 (LWP 6191) exited] [Thread 0x3faf5470 (LWP 6207) exited] [Thread 0x3d2f5470 (LWP 6212) exited] [Thread 0x349f2470 (LWP 6234) exited] [Thread 0x46af5470 (LWP 6193) exited] [Thread 0x76c27470 (LWP 6168) exited] [Thread 0x412f5470 (LWP 6204) exited] [Thread 0x49af5470 (LWP 6187) exited] [Thread 0x432f5470 (LWP 6200) exited] [Thread 0x4f148470 (LWP 6185) exited] [Thread 0x472f5470 (LWP 6192) exited] [Thread 0x422f5470 (LWP 6202) exited] [Thread 0x5145b470 (LWP 6172) exited] [Thread 0x3b2f5470 (LWP 6216) exited] [Thread 0x43af5470 (LWP 6199) exited] [Thread 0x2e5be470 (LWP 6240) exited] [Thread 0x366f7470 (LWP 6224) exited] [Thread 0x378ff470 (LWP 6223) exited] [Thread 0x392f5470 (LWP 6220) exited] [Thread 0x331d2470 (LWP 6226) exited] [Thread 0x402f5470 (LWP 6206) exited] [Thread 0x3f2f5470 (LWP 6208) exited] [Thread 0x50c5b470 (LWP 6178) exited] [Thread 0x3caf5470 (LWP 6213) exited] [Thread 0x2f5be470 (LWP 6237) exited] [Thread 0x3eaf5470 (LWP 6209) exited] [Thread 0x3aaf5470 (LWP 6217) exited] [Thread 0x48af5470 (LWP 6189) exited] [Thread 0x2cdbe470 (LWP 6244) exited] [Thread 0x3daf5470 (LWP 6211) exited] [Thread 0x380ff470 (LWP 6222) exited] [Thread 0x3c2f5470 (LWP 6214) exited] [Thread 0x38af5470 (LWP 6221) exited] [Thread 0x329d2470 (LWP 6230) exited] [Thread 0x2d5be470 (LWP 6243) exited] [Thread 0x44af5470 (LWP 6197) exited] [Thread 0x39af5470 (LWP 6219) exited] [Thread 0x42af5470 (LWP 6201) exited] [Thread 0x41af5470 (LWP 6203) exited] [Thread 0x321d2470 (LWP 6231) exited] [Thread 0x3a2f5470 (LWP 6218) exited] [Thread 0x4e6ff470 (LWP 6186) exited] [Thread 0x40af5470 (LWP 6205) exited] [Thread 0x492f5470 (LWP 6188) exited] and then it simply exits, gdb including :( -Christoffer _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
