Nice idea Tobias, but I forgot to mention both machines are on the same LAN, and the LAN is operating with standard MTU, no jumbos.
Sent with Proton Mail secure email. On Saturday, 9 March 2024 at 17:02, Tobias Fiebig <tob...@reads-this-mailinglist.com> wrote: > Might be MTU? Can you try what happens with `find /` ? > > If it freezes then, too: > > On both machines: > > ping -s 1252 -D $remote_IP > > if it works, increase by half the way to 1472, try if it still works: > > ping -s 1362 -D $remote_IP > > etc. > > If it does not work, you half the distance to the previously working > one, e.g.: > > ping -s 1362 -D $remote_IP << works > > ping -s 1417 -D $remote_IP << does not work > > then next: > > ping -s 1390 -D $remote_IP > > If you use IPv6, you need to decrease the starting/end value by 20 and > use ping6, i.e., as min 1232 and as max 1452; If the hosts cannot reach > each other directly (NAT), it depends on the path which addr to use; > Would need traceroutes between the hosts then. > > The assumption would be that you do have an MTU issue on-path there, > which is not correctly signaled. This only hits as soon as the packets > get a size larger than the MTU, e.g., when typing dmesg (or find /). > > With best regards, > Tobias > > On Sat, 2024-03-09 at 16:07 +0000, Laura Smith wrote: > > > Hi > > > > I've got a fresh install of 7.4 on a new box and am seeing a very > > weird problem. > > > > If I enter "dmesg" I get a few lines of output and then it hangs and > > my ssh connection gets dropped. I ran syspatch, rebooted and the > > problem persists. > > > > Example: > > > > # dmesg > > MX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,PCLMUL,DTES64,MWAIT,DS- > > CPL,VMX,SMX,EST,TM2,SSSE3,SDBG,FMA3,CX16,xTPR,PDCM,PCID,SSE4.1,SSE4.2 > > ,x2APIC,MOVBE,POPCNT,DEADLINE,AES,XSAVE,AVX,F16C,RDRAND,NXE,PAGE1GB,R > > DTSCP,LONG,LAHF,ABM,3DNOWP,PERF,ITSC,FSGSBASE,TSC_ADJUST,BMI1,AVX2,SM > > EP,BMI2,ERMS,INVPCID,RDSEED,ADX,SMAP,CLFLUSHOPT,CLWB,PT,SHA,UMIP,PKU, > > WAITPKG,PKS,MD_CLEAR,IBT,IBRS,IBPB,STIBP,L1DF,SSBD,SENSOR,ARAT,IBRS_A > > LL,SKIP_L1DFL,MDS_NO,IF_PSCHANGE,TAA_NO,MISC_PKG_CT,ENERGY_FILT,DOITM > > ,SBDR_SSDP_N,FBSDP_NO,PSDP_NO,RRSBA,OVERCLOCK,XSAVEOPT,XSAVEC,XGETBV1 > > ,XSAVES > > cpu19: 32KB 64b/line 8-way D-cache, 64KB 64b/line 8-way I-cache, 2MB > > 64b/line 16-way L2 cache, 30MB 64b/line 12-way L3 cache > > cpu19: smt 0, core 35, package 0 > > cpu20 at mainbus0: apid 72 (application processor) > > cpu20: 12th Gen Intel(R) Core(TM) i9-12900TE, 3392.18 MHz, 06-97-02, > > patch 00000025 > > Timeout, server 10.1.2.3 not responding.
