Re: statistics on smb3 mount

[Steve French <smfrench@xxxxxxxxx>]

On the subject of which statistics to display on a cifs/smb3 mount - one other example for comparison, mountstats. Note that nfs is the only filesystem which seems to display detailed information in /proc/<pid>/mountstats

See below sample output e.g. "cat /proc/1/mountstats" (would this be useful to add for cifs.ko? ie implementing "show_stats" superblock method as nfs does to display more detailed smb3 specific protocol statistics)

device vmware-vmblock mounted on /run/vmblock-fuse with fstype fuse.vmware-vmblock
device //localhost/test mounted on /mnt with fstype cifs
device localhost:/nfsexport mounted on /mnt1 with fstype nfs4 statvers=1.1
    opts:    rw,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,acregmin=3,acregmax=60,acdirmin=30,acdirmax=60,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=127.0.0.1,local_lock=none
    age:    1191
    impl_id:    name='',domain='',date='0,0'
    caps:    caps=0x1fbffff,wtmult=512,dtsize=32768,bsize=0,namlen=255
    nfsv4:    bm0=0xfdffbfff,bm1=0x40f9be3e,bm2=0x20803,acl=0x3,sessions,pnfs=not configured
    sec:    flavor=1,pseudoflavor=1
    events:    11 9 0 0 6 0 19 1 0 19 0 3 12 0 3 2 0 2 0 0 1 0 0 0 0 0 0
    bytes:    471859200 5 0 0 503316480 5 122880 1
    RPC iostats version: 1.0  p/v: 100003/4 (nfs)
    xprt:    tcp 949 0 1 0 56 541 541 0 3932 0 11 13 3391
    per-op statistics
            NULL: 0 0 0 0 0 0 0 0
            READ: 480 480 0 115200 503366400 1216 1606 2827
           WRITE: 1 1 0 268 176 0 4 4
          COMMIT: 0 0 0 0 0 0 0 0
            OPEN: 1 1 0 340 372 0 6 6
    OPEN_CONFIRM: 0 0 0 0 0 0 0 0
     OPEN_NOATTR: 1 1 0 292 352 0 0 0
    OPEN_DOWNGRADE: 0 0 0 0 0 0 0 0
           CLOSE: 2 2 0 480 288 0 0 0
         SETATTR: 0 0 0 0 0 0 0 0
          FSINFO: 1 1 0 188 164 0 0 0
...

On Tue, Jul 31, 2018 at 4:17 PM Steve French <smfrench@xxxxxxxxx> wrote:

On Tue, Jul 31, 2018 at 3:42 PM Volker Lendecke <Volker.Lendecke@xxxxxxxxx> wrote:

On Tue, Jul 31, 2018 at 03:21:02PM -0500, Steve French via samba-technical wrote:

> There are other statistics that can be dumped in Windows redirector, but
> those seem to be the most visible (those available via "net statistics
> workstation").   Any other suggested statistics?

Response times. I know they are more difficult to track, but a little
logarithmic histogram might be doable.

Probably doable.  What do you think of the output of iostat (here is default iostat output)?

$ iostat /dev/nvme0n1
Linux 4.18.0-041800rc7-generic (smf-Thinkpad-P51)     07/31/2018     _x86_64_    (8 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
          11.74    0.19    5.31    0.05    0.00   82.71

Device             tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
nvme0n1           5.69        59.45        45.30    4187172    3190324

Presumably nfsstats are not any more helpful - here is sample client stats output from nfsstat

$ nfsstat -c
Client rpc stats:
calls      retrans    authrefrsh
522        0          522    

Client nfs v4:
null             read             write            commit           open            
1         0%     480      91%     1         0%     0         0%     1         0%    
open_conf        open_noat        open_dgrd        close            setattr         
0         0%     1         0%     0         0%     2         0%     0         0%    
fsinfo           renew            setclntid        confirm          lock            
3         0%     0         0%     0         0%     0         0%     0         0%    
lockt            locku            access           getattr          lookup          
0         0%     0         0%     2         0%     12        2%     2         0%    
lookup_root      remove           rename           link             symlink         
1         0%     0         0%     0         0%     0         0%     0         0%    
create           pathconf         statfs           readlink         readdir         
0         0%     2         0%     2         0%     0         0%     2         0%    
server_caps      delegreturn      getacl           setacl           fs_locations    
5         0%     0         0%     0         0%     0         0%     0         0%    
rel_lkowner      secinfo          fsid_present     exchange_id      create_session  
0         0%     0         0%     0         0%     2         0%     1         0%    
destroy_session  sequence         get_lease_time   reclaim_comp     layoutget       
0         0%     0         0%     0         0%     1         0%     0         0%    
getdevinfo       layoutcommit     layoutreturn     secinfo_no       test_stateid    
0         0%     0         0%     0         0%     1         0%     0         0%    
free_stateid     getdevicelist    bind_conn_to_ses destroy_clientid seek            
0         0%     0         0%     0         0%     0         0%     0         0%    
allocate         deallocate       layoutstats      clone           
0         0%     0         0%     0         0%     0         0%  

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Thanks,

Steve

--

Thanks,

Steve